Letter from the President and CEO - Rockford Fosgate

Volume MAGAZINE ISSUE 3.0
rockfordfosgate.com
Skin Industries
al borda is wide open
dodge lowrider
not on the down low
south africa’s p&p sound
Nissan skyline skyle gtr32
paul Yaffe’s bagger nation
game over
rockford fosgate sound lab
ultimate carnival ride
buyer’s guide 2011
How To: Woofer Box | How To: Wiring wizard | test & Review: t1 subwoofer | test & Review: brt amp

yan sipes
josh grant
Letter from the President and CEO
People often ask me, “What makes Rockford Fosgate so special? Isn’t it
just another car audio product?” My answer is simple. Rockford Fosgate
is the “original seed” of car audio. In 1973, Jim Fosgate was a visionary
in designing a high power amplifier for the automobile. From that point
forward Rockford Fosgate has set the benchmark in mobile audio and
defined the lifestyle.
It’s about the music and the experience in the car. I recently drove home from
the office and sat in the driveway listening to the end of an old Steely Dan
album. Not only did it bring back some great memories, but I was immersed
in the performance. Great car audio has the ability to insert you into the
performance and the music. You feel it, you hear it, it becomes emotional,
and it makes you respond. It’s this experience we have brought to the
marketplace with our Sound LAB vehicles. People get to experience car
audio the Rockford Fosgate way in the PRESSURE CHAMBER or demo our
various products in their own vehicles via the LAB. The results are just like
my ride home, WOW!
It doesn’t matter whether you are listening to Lady Gaga, AC/DC or Robbie
Williams, the performance becomes “personal”. The lifestyle that goes along
with Rockford Fosgate is honest and straight forward. We are passionate,
we like quality and we are proud of our rides. We take cars and car audio
seriously. If you walk the halls of the corporate office in Tempe, you will find
CAR AUDIO FANATICS. We live this business, Period!
cameron dollar
From each and every person at Rockford, thank you for your interest and
support. We remain committed to developing class leading mobile electronic
products. Enjoy the Rockford Fosgate experience and remember it’s all about
the music in your car!
Bill Jackson, President/CEO
1 VOLUME 3.0
ROCKFORDFOSGATE.COM 2

features
25
15
21
7
7 // rockford fosgate sound lab
ultimate carnival ride
15 // Skin Industries
al borda is wide open
21 // south africa’s p&p sound
Nissan skyline gtr34
27
departments
9 // test & review - boosted rail amplifier
11 // how to - woofer wiring wizard
13 // inside look - T5 components
17 // inside look - boosted rail amplifier
19 // test & review - t1 subwoofers
3 VOLUME 3.0
25 // paul Yaffe’s bagger nation
game over
27 // dodge lowrider
not on the down low
22 // how to - do it yourself box build
23 // inside look - power ad amplifier
29 // inside look - 3sixty.3 processor
31 // rockford fosgate punch wear
P3
UNSURPASSED INTENSITY
WITH A RELENTLESS PUNCH
INNOVATION & DESIGN
EXCEEDING ALL EXPECTATIONS
25 %
MORE
CONE AREA
Vertical Attach Surround Technique
U.S. Patent (Patent Pending)
PUNCH P3 Subwoofers Feature:
• VAST provides up to a 25% increase in the speakers
effective radiating cone area dramatically improving both
nominal efficiency and maximum output capabilities.
• Flex Fit is a slot mounted frame pattern which allows slight
adjustment of the speaker when mounted.
• 2.5” Copper Clad Aluminum Voice Coil
• Thermal Anodized Aluminum Cone
• 500-600 watts RMS/1000-1200 watts Peak
AVAILABILE:
- 10”, 12”, 15” Sizes
- Dual 2 or 4 ohm
Rockford Fosgate PUNCH ® subwoofers, available at authorized retailers worldwide rockfordfosgate.com • 800.366.2349

setting
the
standard
In 1973, Jim Fosgate changed the rules of the game when he
designed an amplifier called the POWERPUNCH. Fosgate
had engineered and designed an amplifier that for the first
time in history could drive low impedance loads and was
able to run both stereo and mono simultaneously. This
dictated that the amplifier incorporated a MOSFET design,
a small detail that was unknown in the world of audio. With
this unique amplifier design Fosgate then designed the
Punch EQ, allowing the adjustability to the bass and
treble, the sonic signature or “curves”. This allowed the
perfect balance and Punch that was needed in a car audio
system. The dynamic sound of the Punch EQ would lead
an industry for over three decades by a mastermind of
engineering, design, innovation and technology. Fosgate
became an industry icon and commanded the authority of
Power and Performance, a brand for a lifestyle that would
bond those passionate about high performance car audio.
Today Rockford Fosgate has manufactured, serviced and
supported an industry worldwide and has come to define
high performance car audio. A long-standing reputation of
exceptional products, reliability and assurance has earned
Rockford Fosgate the prominent position in the audio
industry. Just as our products have evolved, so too has our
company. We continue to lead and are proud to design
and engineer in the USA. We pledge that every product
that embraces the name Rockford Fosgate is backed by
an extensive and dependable worldwide support network.
With each new endeavor, our history of leadership is
elevated even higher. We’ve pushed harder and had a
commitment, a dedication and
a desire to be the ambassador
within the industry. We are proud
that our past drives us today with
passion and purpose. But the
most exciting adventure is the one
that continues to unfold each and
every day, as we watch all of the
diverse and imaginative ways of
our future.
power T1000-4ad
Punch 45
Power t1
pr7000 powerpunch
1973
Rockford Fosgate is born.
1980
Jim Fosgate introduces
PR7000 PowerPunch amplifier.
RTTI(Rockford Technical
Training Institute) is launched.
The Punch 45 MOSFET
amplifier is born.
1986
1985
1988
Power 1000 MOSFET is born.
PVC “Birth Certificate”concept
is launched.
1990
Rockford introduces Hybrid
Surface Mount technology.
Rockford produces the first 12 Volt
Symmetry is born.
Patented Class D
amplifiers to use MOSFET transistors. 1984 1991
topology “BD” debuts. 1997
Rockford introduces
the Power T30001 as the most
powerful car amplifier ever.
1995
2004
TRANS•ana topology debuts.
2000
Rockford Fosgate
partners with Nissan ® .
2005
Patented 3Sixty interactive signal processor debuts.
2006 2009
Rockford introduces the T15KW, 15000 watt amplifier.
Rockford Fosgate partners with Mitsubishi ® .
2007
Rockford introduces
patented DTM circuit.
Rockford Fosgate partners
with Malibu ® boats.
Rockford introduces Vertical Attach Surround Technique (VAST)
for class leading loudspeaker line of products.
Rockford Fosgate partners with
Sea Ray ® boats.
2010
Rockford Fosgate partners
with Suzuki ® .
Patent pending Full-Range
Class D topology “AD” debuts.
2011
Rockford introduces patent
pending Boosted Rail technology.
Rockford’s 3Sixty awarded patent.
5 VOLUME 3.0

It’s always better the first time! At least that’s how we
remember it...first car, first girlfriend and the first encounter
with a REAL car audio system. Fact or fiction you could
debate for days but the reality is you’ll never forget the day
you experience, for the first time, (12) 15” subwoofers in a
bone crushing pressure chamber. And you’ll never forget
that day the black and red pirate ship, technically known as
the Sound Lab, delivered it.
Beginning life on a blank sheet of paper, in Tempe’ Arizona,
the Sound Lab was developed with no preconceived notions
of what a demo vehicle should be. Just expectations on what
it should accomplish. Should the focus be one-off wheels?
Ice cream paint? Adjustable suspension? Or should it be
to deliver a world-class car audio experience the Rockford
Fosgate way? RF chose the latter and began conceiving a
plan that would not only provide the adrenaline rush of a
theme park but also turn any vehicle into a platform for RF
gear to be auditioned.
The mission of turning concept to reality was handed over
to Mark Lowe, industry icon and demo vehicle OG. Mark
and his team set forth designing and fabricating a one-off,
first of its kind, dual-functioning demo vehicle. Utilizing a
Mercedes-Benz 3500 Sprinter van the crew produced two
unique demonstration platforms, an unforgiving pressure
chamber and a technical installation bay, giving consumers
the ability to customize and maximize their RF experience.
Driven by an Apple® interface the PRESSURE CHAMBER
features (12) PUNCH P3 series 15” subwoofers (P3D2-
15) that are driven by (3) POWER 2500 Watt Class-bd
Constant Power amplifiers (T2500-1bdcp) that produce
over 7,500 watts of power. The sound stage features
(4) pairs of Rockford Fosgate’s POWER T1 series 6.5”
2-way component speakers (T1652-S). In conjunction
with an LED light show and choreographed media the
Pressure Chamber is designed for an all-out full throttle
demonstration, and is not for the faint of heart. The Sound
Lab delivers an experience like never before.
There have been demo vehicles built to showcase
manufactured products before, however they never gave
the consumer the option to know what it would sound like
in their own vehicle. This became one of the most important
features of the Sound Lab; to have a complete mobile Lab
on board. The Lab allows the technician to install a complete
Rockford Fosgate sound system into a car in a matter of
minutes, giving a live demonstration of a POWER, PUNCH
or PRIME system. Pre-loaded sub enclosures with 10” or 12”
subwoofers, and component full range speakers for the front
built into satellite pods connected to a bank of amplifiers
let you select between 800 to 2100 watts. The Lab gives
customers a first hand experience with RF in their own
vehicle.
On tour, Rockford Fosgate’s Sound Labs are out and
about 24/7 supporting dealers and their events. For more
information log on to Rockfordfosgate.com to find out where
you can experience a Sound Lab is today.
7 VOLUME 3.0

Text and Measurements by Garry Springgay; published by PAS Magazine
Just
when it
seemed like
everyone had a
handle on the various
types of amplifiers
available for our rides, the
engineering gurus at Rockford
Fosgate have thrown us a curve. For
the last 30 years or so, the vast majority of amplifiers
used in car audio have been basically one of two or
three common topologies. Back in the 90’s, almost all
amplifiers were typical Class A/B designs, albeit with
variations on the theme. Then along came Class D,
which began with amplifiers designed for bass only, but
as technology marches forward, Class D is now fast
becoming the standard topology for any type of car
audio amplifier. There were a few Class T, G, H, and GH
designs sprinkled in the mix, but Class A/B and Class
D have always had the lion’s share of the market.
Well, now Rockford Fosgate has introduced a new,
miniature sized amplifier design that they are calling
Class BR. A mono model is available now, and by
the time you read this, a 4 channel model will also
be available. The concept behind these amplifiers is
simple, small chassis, high efficiency, and good sound.
For this review, Rockford Fosgate sent me a sample of
the PBR300X1, which at only 1.5” x 4.25” x 6.75” is a
tiny little amp, but it is rated at 300 watts into 1 ohm.
Features
As I mentioned, the PBR300X1 is a very small amplifier,
and at first glance it reminds me of an average size
passive crossover in terms of how much space it takes
up. It is finished in basic black brushed aluminum,
with red end panels and a chrome Rockford Fosgate
logo on the top. Mounting is accomplished via
mounting tabs incorporated into the trim panels on
each end. Because it is so small, the controls and
connections are somewhat different from what one
would expect from a Punch amplifier. The power,
ground and remote leads are connected via a heavy
duty 3 position Molex plug, that will accept 10 gauge
wire. The wires are secured very well, and the plug
has a positive feeling connection with the female
connector on the amp. The pair of 12 gauge speaker
output wires are also connected via a Molex type,
4 position plug. There are a pair of positive output
wires, and a matching pair of negative leads. On
my sample, the respective wire pairs were spliced
together and soldered, but if you wanted to connect
them individually to multiple woofers, the harness is
long enough to cut off the spliced segment. Signal
input is also handled via a 4 position Molex type plug,
which is terminated with RCA style connections, but
if you want to connect speaker level inputs, simply
snip off the RCAs and wire your high level outputs
directly to the remaining wires.
With very limited space for controls and
adjustments, the PBR300X1 still manages a gain
pot, a variable frequency crossover pot, a high/low
level switch, and a pot for adjusting the sensitivity
of the automatic DC signal sensing turn-on circuit.
The amp also incorporates protection circuitry for
under voltage, short circuit, and thermal overload
conditions. An RJ-45 style jack allows connection
to an optional Punch EQ remote.
Features and Tech
The first thing I did with the tiny Punch amp was
listen to it, and after being thoroughly impressed,
the next thing I did was take it apart to find out
what made it tick, or in this case, boom!
As it turns out, the topology used inside the PBR300X1
is a very clever adaptation of a circuit sometimes referred
to as a “charge pump”. While still technically a Class A/B
amplifier, the design allows higher than normally possible
rail voltages without resorting to a typical switching
power supply. This approach provides several benefits.
It is inherently efficient and the removal of power supply
devices, toroids, and so forth means the amplifiers
size can be dramatically reduced. Second, because
the amp is not switching huge currents at high speeds,
the amount of radiated noise and interference can be
virtually eliminated. Finally, through the use of high
current capable MOSFET output devices, the design
can easily drive 1 ohm loads with no problem. Rockford
Fosgate’s design takes a typical charge pump idea
several giant steps forward. However, the design allows
the rail voltage to be dictated by the load and the output
level, further enhancing power efficiency, and less power
lost to heat.
The PCB is typical Rockford Fosgate, with a densely
populated double sided, plated through, glass epoxy
4 layer board covered in zero tolerance surface mount
type devices, and there are three very large 15,000µF
capacitors that are used to “charge” the rails to a higher
voltage. The devices used to charge the
capacitors and for the audio
output are
TO-220 case MOSFETs. A hand adjusted bias pot ensures proper
output transistor biasing, and low distortion.
Listening
As I mentioned, the first thing I did with this amp was listen
to it. Connected into my reference system and driving a 12” 2
ohm woofer, I was very impressed not only with the amount of
authority the amplifier had, but also with the quality of the sound.
Bass notes were well defined, and there was no evidence of
any rolloff in the lowest registers. Several tracks with sub 30Hz
notes came through loud and clear. This thing is the real deal.
Bass definition was quite good, complex pipe organ passages
sounded natural and plucked strings on acoustic bass, as well
as tympani drums were reproduced with the natural resonance
and overtones they produce. Only when I pushed the amplifier
really hard did I start to notice a bit less control and loss of
definition, but to be fair that happened at volumes my ears
would never sustain anyway.
Performance/Bench Measurements
After re-assembling the amp, I got it on the unforgiving
Cogent Audio Labs test bench for a closer look, and the test
results confirmed my listening opinions. The amplifier met
all advertised power numbers, and proved to have a ruler
flat frequency response from below 10Hz to over 200Hz.
Signal to Noise measured well, although my numbers were
a dB or two off from the published spec. The amp has low
output impedance, which helps to control the back EMF
of a woofer load, and keeps the bass sounding tight.
Thermal performance was good, in any normal installation
with adequate ventilation the amp should seldom if ever
overheat. I listened for any turn-on or off pops and there
were none, and I even dead shorted the amp at full power,
and it simply protected, and then began working again
when the fault was corrected.
Conclusion
In a world full of marketing hype and overstated
performance claims, the Rockford Fosgate PBR300X1
stands out and delivers. The amp combines clever
technical innovations with real high performance
audio in a package smaller than you’d expect.
Whether you need an amplifier for a motorcycle, all
terrain vehicle, boat, or a full blown Cadillac, the
PBR300X1 is up to the task. And if you’re skeptical,
just ask Rockford Fosgate’s Quality Control
Manager Mark Lieber, who uses one of these little
amps to drive six 15” woofers!
ROCKFORDFOSGATE.COM
10

HOWto
optimize your subwoofer wiring
If you need to know how to wire woofers to your amplifier or determine what amplifier is compatible
with your woofer system, then this tutorial will help. Based off our popular RFTECH:Woofer
WiringWizard, it utilizes “Ohms Law” to calculate the total impedance an amplifier will “see”
and optimize power delivery to your subwoofers. When matching products always use the
corresponding subwoofer “RMS Power Handling” with the amplifier “RMS Power Output”, this will
insure you don’t exceed the subwoofer’s thermal power rating.
Parallel Wiring - The more woofers connected, the lower the impedance.
Rt =
1
R1
+
1
R2
1
+
1
R3
Rt = Total Resistance
R1, R2, R3, R4 = Resistance of Each Woofer
+
1
R4
2Ω
8Ω 8Ω 8Ω 8Ω
wiRING methods
svc vs. dvc Ω law
Understanding Ohm’s Law is important because
you can calculate the relationship (power) between
an amplifier’s speaker output (voltage) and the
impedance load (resistance) of a subwoofer system.
Q: What are the differences between Single Voice Coil and Dual Voice Coil subwoofers?
(2) 8Ω SVC Speakers = 4Ω Load
4Ω 8Ω 8Ω
20V x 20V
= 50W
8Ω
Svc
8Ω
(2) 4Ω SVC Speakers = 2Ω Load
2Ω 4Ω 4Ω
20V x 20V
= 100W
4Ω
The above examples show an amplifier producing 20V AC at the speaker outputs. If we connect an
8-Ohm woofer, it produces 50 Watts of power. However, if we connect a 4-Ohm woofer, it produces
100 Watts of power. The lower the impedance, the more power an amp can produce. The higher the
impedance, the less power. NOTE: Refer to your amp owner’s manual for impedance stability.
4Ω
The above formula will help you determine the total resistance when
wiring woofers in parallel. A parallel circuit joins all woofers into a single
amplifier load.
series Wiring - The more woofers connected, the higher the impedance.
Rt = R1 + R2 + R3 +
Rt = Total Resistance
R1, R2, R3, R4 = Resistance of Each Woofer
R4
The above formula will help you determine the total resistance when
wiring woofers in series. A series circuit also joins all woofers into a
single amplifier load.
series/parallel Wiring - A combination of both series & parallel wiring.
Parallel wiring combines all (+) positive leads together, and all (-)
negative leads together. The result provides one (+) positive terminal
and one (-) negative terminal for connection to the amplifier.
16Ω
4Ω
4Ω
Series wiring is a method of connecting woofers end to end on a
single string. The result provides one (+) positive terminal and one
(-) negative terminal for connection to the amplifier.
4Ω
4Ω
Single Voice Coil (SVC)
SVC subwoofers utilize a single length of copper wire wound on a circular
voice coil “former”. They utilize one Positive (+) and one Negative (-) wiring
terminal. When wired in parallel, the above pair of 8Ω subwoofers can only
present the amplifier with a 4Ω load.
You must switch to a pair of 4Ω SVC subwoofers to present the amplifier
with a final load of 2Ω.
4Ω
4Ω
4Ω
4Ω
4Ω
4Ω
4Ω
4Ω
4Ω
4Ω
4Ω
4Ω
4Ω
4Ω
(2) 4Ω DVC Speakers = 4Ω Load (2) 4Ω DVC Speakers = 1Ω Load
4Ω
4Ω
4Ω
4Ω
Svc
dvc
4Ω
4Ω
Dual Voice Coil (DVC)
DVC subwoofers utilize two separate lengths of copper wire, both wound on the
same voice coil “former.” A DVC subwoofer has two Positive (+) and two Negative
(-) wiring terminals, one for each coil. The above pair of 4Ω DVC subwoofers can
be wired in series/parallel to present the amplifier with a 4Ω load.
4Ω
dvc
1Ω
4Ω
By simply re-wiring the subwoofers in parallel, you can present the
amplifier with a 1Ω load. Consult your amplifier owner’s manual to
determine the minimum impedance load it can handle.
4Ω
A sample diagram for Series/Parallel Wiring using 4Ω Single Voice Coil
(SVC) subwoofers
A sample diagram for Series/Parallel wiring using 4Ω Dual Voice Coil
(DVC) subwoofers.
Our RFTECH: Woofer WiringWizard is an online configuration tool that uses diagrams
to illustrate how to properly wire subwoofers, all without needing to learn Ohms Law or
Series / Parallel wiring formulas. Simply select the quantity of subwoofers and voice coil
type used, and the WiringWizard will display wiring options possible with your selected
configuration.
There’s also a reverse lookup to determine what subwoofers are compatible with your
amplifier. Simply select the minimum amplifier impedance and the WiringWizard will
display what voice coil options are required to optimize the amplifier’s power output.
11 VOLUME 3.0
DVC subwoofers offer the same performance whether wired in series or parallel. Power handling, frequency
response, and other specifications do not change — the only difference is the impedance presented to the amplifier.
Regardless of using SVC or DVC subwoofers in your car audio system, use the
recommended enclosure as specified by the manufacturer.

and intelligent tweeter protection. The numerous
adjustments give installers the ability to compensate
for virtually any tweeter and woofer placement inside
the vehicle.
by:
PHILOSOPHY
The fundamental philosophy in the design of our new
high-end speaker system was simple, create the best
sounding speakers optimized for car audio, and by
the way, don’t worry about expense.
STRATEGY
We had to focus on how to make improvements to
the core of what contributes to a speaker system’s
acoustic performance. First, we didn’t settle for small
refinements, rather we tackled a completely new
design from the ground up that yields unmatched
performance. Second, we had to have ideal
implementation and optimization functionality. This
is probably the most commonly overlooked aspect
of any speaker system, especially at the high-end.
INSPIRATION
Several years ago Rockford Fosgate set out to re-calibrate and re-design
our full-range speaker line-up. It started with entry level products with
compelling incremental refinements that could be developed at each price
point. However, it was the prospect of a “no compromise” system that
initiated the T5 dream.
MILESTONE
At Rockford Fosgate, we have many phases of development. We start with
a concept designed on paper. From there, we start creating hand-made
samples and work through prototypes to eventually get to production.
Probably the most encouraging milestone we had achieved was
getting a chance to audition the first “off-tool” engineering sample.
All the hard work done in the early engineering and prototype phases
really paid off. We could truly hear the difference.
CHALLENGES
From the very beginning, our challenges were quite daunting, but the engineering
team was ready to take them head on! We were looking to use materials
and processes not previously used in the audio industry. We worked closely
with our raw material suppliers to develop techniques necessary to achieve
our goals. In particular, the LCPF (Liquid Crystal Polymer Fiber) material
engineered into our cone design was not available to our industry. We invested
a substantial amount of time and money into these raw materials to make the
design goals possible. We also had to create the best method for insuring
that each and every T5 Component System could truly be optimized during
installation. We stepped out of the box and came up with the world’s first
“active-passive” intelligent crossover network. Housed in a single chassis,
both left and right channels of the filter network are isolated and use only
the finest grade capacitors, resistors, and inductors. For full functionality,
the crossover network requires a 12VDC connection. This is a low power
connection for driving the embedded microcontrollers that allow for fine
tuning the attenuation, polarity, crossover frequency, crossover slope,
WHAT MAKES IT DIFFERENT
There are many unique elements in the T5 component
system, but it’s the combination of elements that truly
make the difference. However, the most significant and
most unique aspect of the T5 component system is best
represented in the proprietary LCPF cone. It is actually
a three layer composite design comprised of two LCPF
outer skins laminated around a paper/pulp core, yielding
a very light and stiff cone with excellent damping qualities.
Weight, stiffness, and damping are all principal factors
that contribute to the sonic qualities of a loudspeaker.
Historically, at least one of these three factors have been
compromised in the design of the loudspeaker cones. The
T5 woofer is the first loudspeaker to truly have no significant
compromise in all three critical elements of an “ideal” cone.
WHAT SETS IT APART
Many high end speaker systems can sound very good at
low to moderate listening levels. However, they often break
up and struggle to reproduce very dynamic music signals.
Today’s power amplifier are by design more efficient and
powerful in an effort to play louder and cleaner. It’s at
these high power levels where the T5 component system
distinguishes itself. The linear excursion of the T5 woofer is
nearly 7mm which is comparable to many subwoofers. This
directly translates into greater dynamic capabilities while
keeping distortion levels at a minimum. Loudspeakers must
be able to handle ever increasing power levels, and high
excursion alone does not increase a speaker’s linear output
capability. To play loud with minimal distortion requires a
solution for not only reducing the amount of heat generated
by the loudspeaker, but a means to quickly dissipate it.
Natural induction of the speaker’s voice coil movement in its
magnetic field generates, what is often referred to as back EMF
(Electro Motive Force), whereby currents flow in opposition
to the alternating current being applied by the music signal.
Unless these currents are counter-acted in some
way, significant additional unwanted
heat is generated.
3D magnetic and structural analysis
The solid copper phase plug and multi-pole motor heat
sink effectively “short-out”this back EMF and act as the
ideal heat sink.
TIMELINE
In recent history at Rockford Fosgate, much enhancement
has been made to our full-range speaker line-up.
Development began over 5 years ago and the first new
full-range product released was the 2008 M2 Series – a
true marine grade product - followed shortly by the new
2009 Punch P1 and Power T1 series. In 2010, the T2 series
of full-range products was introduced. Now in 2011, the
culmination of years of development has yielded the T3
and T5 high performance series of speakers, a sonic
accomplishment we’re very proud of.
ROCKFORDFOSGATE.COM
14

al borda
is
With his F430 covering the performance side of life, Borda
went red-carpet meets freestyle MX with the Mercedes Benz
CL 600. Wanting to incorporate a piece of the business into
the stereo installation, Ruben “tagged” the interior of the
subwoofer enclosure with a customized Skin Industries logo
print...which is visible through the edge lit crystal plexiglass
baffle board. The dual Power T1 subwoofers are the ultimate
compliment to the T1500-1bdCP amplifier which ignites the
CL’s trunk.
As creator of one of this decades most influential brands
Al Borda and Skin Industries embody the fanatical lifestyle
that has come to define Rockford Fosgate...setting the
trends with the volume full-tilt 24/7!
Al Borda and
Skin Industries
embody the fanatical
lifestyle that
has come to define
Rockford Fosgate
wide open
Al Borda, CEO of Skin Industries, not only has a closet full
of progressive garb, but also a matching exotic filled garage
to compliment his flow. Never settling for average, Borda’s
daily drive through Temecula Valley is like his music and his
lifestyle-driven-brand...personal and fast! Inspired by life’s
ride, Al relies on Rockford Fosgate to reproduce his wideopen
soundtrack.
Ruben Valloza of Audio Evolution, Temecula CA’s
premier authorized RF dealer, is on speed dial
for Borda. When it comes to his exotics and their
12-volt needs, Ruben is the “Skin” specialist.
So when it came time for the Ferrari F430s to
get its Rockford Fosgate I.C.E. Ruben and Al
collaborated on the space challenged ride.
Having to get creative on the Ferrari, Audio Evolution
crafted enclosure pods behind the seats, housing (2)
RF Punch P2 subwoofers managed by a Power series
T1500-1bdCP amplifier. Creating the sonic signature for
the front stage Ruben and Al went with Power Series T1
components by a Power T600-4 amplifier, 5.25” in the center
compartment and 6.5” components in the doors. This delivered one
hell of an experience for the 120 MPH concerts.
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15 VOLUME 3.0
ROCKFORDFOSGATE.COM 16

y:
PHILOSOPHY
Electrical capacity and physical space are at a
premium in most vehicles. With that in mind, we
set off to design a linear amplifier topology that
is more efficient than a conventional Class A/B
topology which carries low EMI (Electro-Magnetic
Interference). The technology needed to be housed
in a chassis that is significantly smaller than other
products in the market with equal performance.
High efficiency is a staple ingredient for high
performance amplifiers. The higher the efficiency,
the lower the current draw on a vehicle’s electrical
system. Lower current consumption creates less
heat in the product, which allows for a smaller
heat-sink when compared to conventional linear amplifiers.
The smaller chassis size allows the product to be installed in locations that
other amplifiers at these power levels simply would not fit.
EMI is an important element when considering installation locations. Other
vehicle components could potentially be
adversely affected
by radiated noise.
Because boosted
rail technology is a
linear topology, the
switching noise is
relatively low. This
makes choosing the
installation location
with regard to EMI and other vehicle components less
of an issue. Installation flexibility is greatly increased
when using the Punch BR series amplifiers.
early prototype
Strategy
We can condense the new topology into a remarkably
small chassis size without sacrificing performance.
The technology itself is electrically efficient, but that
efficiency isn’t the only factor related to the size
reduction. A look at the physical construction of a Punch
BR amp tells the rest of the story. The chassis itself is
very thermally efficient. One trait of a good heat sink
design is low thermal impedance. The lower the thermal
impedance is, the higher the thermal conductivity. The
higher the thermal conductivity, the faster the heat can
travel through the sink and out to the air. The Punch BR
resides in an anodized extruded aluminum chassis. Extruded
anodized aluminum achieves a higher thermal conductivity
when compared to powder coated die cast. This extruded
heat sink coupled with our MESHA technology yields very
low thermal impedance from power device to the exterior of
the heat-sink. You may notice that the Punch BR amplifiers
get warm. No worries, this is by design. Our goal is to get
the heat out of the devices, into the heat sink, and into the
air as fast as possible. This strategy insures the power
devices doing the work are always at a safe and reliable
operating temperature.
The PCBA (Printed Circuit Board Assembly) is really
what drives the size of the mechanical chassis. If you
look inside a Punch BR amplifier, you will see an excellent
example of maximizing PCB real estate.
The input/output interconnect system also plays a role in size
reduction. The connectors were chosen based on capability
and size. The quick disconnect feature is an advantage when
the product is installed in tight locations. Having the ability
to make your connections away from the product makes the
install process easier.
Inspiration
There is a level of satisfaction when you can develop
something new that fits a need. We wanted to design a
product with appreciable output power that could be installed
in locations that weren’t previously accessible due to space
constraints. The efficiency, chassis, interconnects, and Low
EMI all played a part in that goal. We definitely feel that
the Punch BR amplifier series will be used in many new
and unique applications, such as hybrid electric vehicles,
watercraft, motorcycles, and all terrain vehicles.
Milestone
We were pretty excited when we fired up the first
prototype and confirmed the theory of operation. Seeing
it on paper is one thing, but seeing it on the engineering
bench is something completely different.
boosted rail action
The most rewarding milestone is when the engineering
team releases a product from the “design stage”
to the “production stage”. Releasing to production
is the culmination of hard work from the team at
Rockford Fosgate.
Challenges
One thing to consider when introducing a new
technology is whether or not it is scalable and can
be used in multiple applications. Introducing a
technology platform that is expandable and has
growth potential is a good practice. The Punch BR
amplifier series certainly has the potential to expand
and evolve.
What Makes it different
The size and power of the Punch Boosted Rail
amplifiers are what make them different; they are truly
amazing in so many ways; from the unique design and
engineering of the smaller chassis to the PCBA layout
that is brought to the forefront in such a compact
platform. The BR amplifiers will be the benchmark
of the industry setting a standard of excellence.
ROCKFORDFOSGATE.COM
18

Text and Measurements by Garry Springgay; published by PAS Magazine
In the high performance car audio world, the Rockford
Fosgate brand has certainly made a name for itself as the
originator of such legendary products as the Punch 45,
Power 650, Symmetry, and the industry’s first DVC woofers
back in 1989. They continue to be a leader in product
innovation and technology. While most of us tend to think
about electronics when those terms are used, the company
also pushes the technological envelope with speakers and
subwoofers. A perfect example of what I’m talking about
is the Rockford Fosgate Power Series T1D412 subwoofer.
Features
The Rockford Fosgate T1D412 subwoofer is loaded with
trick and cool innovations that make the woofer easier
to install, and improve its performance. The first thing
you notice when you take the woofer out of the box is
that it has an unusually shaped
surround. The
reason is to not only maximize the woofer’s excursion
capabilities, but also to maximize cone area. After all,
the more air you move, the more bass you’ll have.
Rockford Fosgate calls this ingenious (patent pending)
surround “VAST” (Vertical Attach Surround Technique).
The “cone” that you see and that actually moves air is
actually a large aluminum dustcap, which provides a
smooth concave look, and helps dissipate heat from
the voice coil assembly. The dustcap/cone assembly
is actually driven by a Kevlar reinforced paper cone
which can be seen by looking through the die-cast
aluminum basket. In the interest of maximum heat
dissipation, black anodized aluminum is used for the
3-inch former, on which dual voice coils are wound with
copper-clad aluminum wire. Another trick technology
dissipates even more heat called “IDHS” which stands
for Inductive Damping Heat Sink. Attached directly to
the top surface of the nearly 8 pound magnetic motor,
the copper heat sink is finned to disspate heat from the
magnet and reduces distortion and back EMF (Electromotive
Force) from the woofer, which leads to better
sound and improved reliability.
Rockford Fosgate has gone to great lengths
to ensure the T1 woofers tolerate the sort of
abuse their typical customer will put the product
through. Even the tinsel leads have received special
attention by stitching them to the spider in multiple
points. This allows each tinsel lead to have reduced
mass, and spreads the stress over a much larger
area, resulting in a more robust electrical path to the
voice coils.
Those of you who struggle with remembering series
and parallel wiring methods will appreciate the very
handy “SWIFT” (Selectable Woofer Impedance
Fused Termination) terminals. The SWIFT terminals
allow almost instant selection of either 2 or 8 ohm
wiring, and best of all you connect both the voice
coils with a single positive and negative wire. Simply
rotate a special center plug that’s clearly marked for
the intended impedance. The plug also provides
fused protection from accidental overloads.
Connection is
handled by slickly integrated spring loaded terminals
that accommodate up to 8 gauge cables.
Included in the box is a special trim ring and removable
heavy-duty steel mesh grille that looks terrific and
really trims out the woofer. Rockford Fosgate goes
to great lengths to ensure the products exceed the
expectations of even the most enthusiastic customers.
The T1 woofers not only meet the stringent CEA-2031
standards, but also have to pass a brutal 24-hour fullpower
torture test before approved for production.
Listening
After the normal break-in procedure, I read the
owner’s manual and visited the Rockford Fosgate
website for direction regarding the enclosure. I
quickly learned that the T1 woofers can be used
in either sealed or vented enclosures, but are not
recommended for infinite baffle applications. A
quick call to RF tech support revealed that while
the T1 woofer really leans slightly towards a sealed
enclosure, most customers buying them are after
loud bass, and for that, the vented enclosure rules.
So, because most people use them in the vented
application, I decided to try that approach first.
I just happened to have the recommended 1.75
cubic foot enclosure so I loaded the T1D412 into
it and connected the woofer to my reference
system. Man, Rockford Fosgate customer service
wasn’t kidding, this thing hauls the mail! In the
vented enclosure with an 800 watt amplifier
I had more output than the rest of my system
could keep up with. Dialing back the power to
the sub a bit allowed me to concentrate more
on how it sounded. This woofer loves to play
low and loud. Songs with very low frequency
information, such as Avril Lavigne’s “Sk8ter
Boi” or Yello’s “Unbelievable” really showed
the woofer’s capability in a vented application,
and I immediately understood why so many people
choose it. Even with the faster roll-off of a vented
box, the deep bass had tremendous authority and
realism. Kick drum notes were clean and well defined,
and the bass was natural and warm sounding.
As usual, curiosity got the better of me, and I changed to a 1.5
cubic foot sealed enclosure. Now, the deep bass was even
deeper than before, and easily audible down to 20Hz. But what I
really appreciated was how good this subwoofer could actually
sound. In the sealed enclosure the woofer’s realism and definition
improved notably, and if I were to use this woofer in my vehicle,
I’d choose the sealed enclosure. The cool part is, you can
have it both ways with a single woofer, simply by changing the
enclosure. If loud and proud is your thing, the vented box is the
way to go; but if articulate, deep bass approaching audiophile
quality appeals to you, the sealed method is for you.
Conclusion
If you think a subwoofer is a subwoofer then check out the
T1 woofers from Rockford Fosgate. While they certainly
incorporate high tech features and great looks, the T1D412
shows the company has not forgotten what made them
famous in the first place, and is still turning out the kinds
of products that their customers expect. In the case of the
T1D412, that’s authoritative bass that will make you the envy
of the neighborhood, with a torture-tested design that ensures
reliability and long lasting performance.
ROCKFORDFOSGATE.COM
20

SOUTH AFRICAíS
ALWAYS RIGHT
HOWto
build a subwoofer
enclosure dO-IT-YOURSELF style
We had several inquires from readers that don’t have access to a fully stocked RTTI facility, looking
to build an enclosure tailored to their vehicle. With a few hand tools that are common in most
households or easily borrowed from a friend, this box build is for the weekend warrior that isn’t
afraid to get their hands dirty.
1 2 3
Dealer: P&P Car Sound, South Africa
Vehicle: Nissan Skyline GTR34
Since a ‘table saw’ is not a common tool in most
garages, we took a trip to the local hardware
store where we purchased a sheet of MDF and
they were happy to cut it to the pieces needed.
4
5
Supplies: wood glue, caulk, coarse thread
countersunk head screws
Tools Needed: drill, 1/8” drill bit, countersink
bit, phillips screw bit and a jigsaw
With the back of the enclosure flat on your
work surface, begin by laying a bead of glue on
the first piece to be attached.
6
For over a decade, P&P Car
Sound has designed some of the coolest
and best sounding car audio systems in South Africa.
Located in Boksburg, this elite Rockford Fosgate dealer has
applied their talent to some very unique and very fast cars.
So when a long-time fanatic drifted in the parking lot with his
Nissan Skyline GTR34, the installers knew what he wanted
- another Rockford Fosgate system - but this time it wasn’t
just performance he was looking for. The system needed
to follow some guidelines as not to affect the vehicle’s
responsive handling.
The stock Skyline, already legendary in the motoring world,
underwent a total transformation. After outlining requirements
to Shawn of P&P, it was decided that the installation should
complement the character of the vehicle. As with the
case when installing custom audio systems in ANY high
performance super car, the two main restrictions are
space and weight. The installation included an electrical
and battery system upgrade, with the entire system using
Rockford Fosgate cables, stabilized with an RFC10HB 10
Farad Digital Hybrid Capacitor.
A set of Power component systems (T152-S) are located
in custom molded door pods trimmed in grey Alcantara ® to
provide a crisp clean front stage. The subwoofer and splits
are powered by a Power T600-4 amplifier with a Rockford
Fosgate 360.2 Interactive Signal Processor taking care of
all crossover and equalization settings. The installation was
trimmed in a combination of black carbon foil, Alcantara ® ,
smoked glass and blue LED accent lighting. Additionally, a
custom built center console and roof mounted cluster house
an engine management control unit and digital gauges.
Practically no part on the Skyline is stock, and the attention
to detail and customization is truly outstanding. P&P Car
Sound definitely exceeded the required targets and
the Rockford Fosgate system performs -
well - like a rocket.
Since we are using the recommended 3/4”
material in our enclosure, we measured
3/8” from the edge, then using a 1/8” bit to
pre-drill the hole.
7
For a better finished product, we used a countersink
bit to recess the screw heads.
8
Changing bits one last time, switch to the
phillips screw bit to insert the screw to join
the pieces. REPEAT: steps 3-6 until all sides
are attached, then proceed to step 7 prior to
repeating for the front/baffle.
9
The stock source unit was swapped out for a DVD
player fitted into a custom dash trim. A single Punch P3
12” subwoofer (P3D412) was mounted in the trunk and
provides strong, tight bass. The subwoofer was inverted in a
ported enclosure highlighting the beautiful motor assembly.
With the front still remaining to be
attached, apply the caulk to all the joints
for an airtight seal. Now the front can be
attached.
Measure the vertical center and draw a line, then
determine your subwoofer spacing and draw an
intersecting line. Draw your woofer opening. Cut
your woofer opening(s) using a jigsaw. Reach inside
through the woofer openings and caulk the front.
Assembly is now complete! Proceed to finishing
which can be a wide range from vinyl/carpet
or a sprayed on finish to a trim panel. Check
out rockfordfosgate.com/rftech for the Woofer
BoxWizard and other tech tools.
TIP: The inside diameter of a Rockford subwoofer trim ring can be used to draw a guide for the woofer cut-out.
21 VOLUME 3.0
ROCKFORDFOSGATE.COM 22

y:
PHILOSOPHY
Engineers must constantly remind ourselves that we
all “stand on the shoulders of giants.” The more you
study the history of great scientists and drill deep into
the US Patents, you realize how rare it is to come
up with an original idea that advances your field of
study. There is much to learn from what has been
abandoned or neglected by the forgotten inventors
of the past.
STRATEGY
‘Value Added’ analysis of every decision made
during product development assures us that each
component that goes into a product, every feature
added, and every operation performed will add
genuine value for our customer.
INSPIRATION
Acoustat founder Jim Strickland has been my mentor for over 20 years
here at Rockford. Jim is a true inventor, and is the intellectual impetus
behind Rockford’s enviable history of innovative technical leadership in
amplifier design.
MILESTONEs
2006: high-sound quality global feedback circuit
for Class-D Amplifier stage. 2009: Constant Power
concept, Class bdCP Amplifiers, “Dynamic Constant
Power Amplifier” Patent Application. 2010: full-range
audio Class AD Constant Power Amplifier.
CHALLENGES
Getting the message out about why Class AD Amplifiers
are better than the rest. In the greater scheme of things,
amplifiers are pretty boring stuff. Fortunately, there
are Rockford Fosgate fanatics all over the world who
appreciate the effort we put into our amplifiers.
WHAT MAKES IT DIFFERENT
Speaker impedance does not matter to the T1000-
4ad. As long as it is within the rated impedance range,
it will deliver full rated output power. For example the
T1000-4ad is rated at 250W over 1-4 ohms. You can
wire different nominal impedances on each of the
four channels – 4/3/2/1 ohms – and they will each
get 250W rated power when the signal demands it.
The Constant Power feature is even more beneficial
when the impedance of the speaker load changes with
frequency due to 1) enclosure resonances, or 2) coaxial
speaker systems with various nominal impedances for
sub/mid/tweeter drivers. A speaker driven with music
will change impedance dynamically up and down with
music as the signal frequency changes. The Constant
Power technology instantly adapts to this dynamically
changing speaker impedance and automatically delivers
rated power at any frequency when the signal demands.
WHAT SETS IT APART
It sounds louder and cleaner than you would guess
just by looking at specifications. Class AD amplifiers
typically have a much higher 4Ω power rating than other
amplifiers in the same power class. The 4Ω power rating
of an amplifier indicates how much peak output voltage
capability it has, which in turn defines its dynamic
headroom potential. It makes Class AD amplifiers
extremely dynamic, and able to deliver very clean high
voltage transients.
AB, we struggled to justify its value to our customers.
This attitude endured and no Class D type projects
were planned until we formed the concept of Constant
Power. If this new invention could be made to work at
a reasonable cost, we could engineer an amplifier that
would efficiently deliver the maximum power to a speaker
that a power supply could deliver. Best of all, it would
deliver it automatically by instantaneously adapting to
changing impedances in the speaker. The Constant Power
technology was first developed in the summer of 2009
for Class BD Mono Amplifiers. Simultaneously, we were
preparing documents to apply for a patent. In December
2009, Rockford filed an application with the US Patent
Office for a ‘Dynamic Constant Power Amplifier’. Soon
after, the T1000-4ad project was started. The Constant
Power circuits for a full-range Class D amplifier proved
more difficult than our earlier circuit developed for Class
BD. At this time we started referring to this new amplifier
topology by the proper academic classification ‘Class
AD’, to distinguish it from our Class BD amplifiers (there
are two types of Class D: BD and AD). Only after extensive
product development and field testing, we introduced the
T1000-4ad in January, 2011.
TIMELINE
The first goal of the Class AD design process was
to create an amplifier stage with transparent sound
quality. We were able to produce a listenable
prototype at the end of 2006. We performed a series
of A-to-B listening tests comparing the Rockford
Fosgate designed discrete 4-Channel Class-D to
our reference Hafler 9505 Transnova studio amplifier.
After accomplishing an acceptable sonic signature,
we proceeded with a meticulous cost engineering
study of every functional block of the Class-D
schematic, trying to match the cost of a comparable
Class-AB amplifier stage. After scrutinizing every
expense down to the last penny, and finding that
the Class-D would never cost less than a Class
ROCKFORDFOSGATE.COM
24

So what does a kid from SoCal, influenced by the
skateboard and BMX culture of the 70’s, grow up to
be? How does an eclectic kid off of Van Nuys Boulevard
become an industry tastemaker for a global American
motorcycle company and the conductor of a motor
sports revolution? If you ask Paul Yaffe he’d say drive,
passion and style...if you ask Rockford Fosgate they’d
agree!
Growing up in his father’s garage, Paul’s 2-wheel
obsession began. He pushed the limits with every project
he embarked on, taking each one further than the other
with performance and styling. Yaffe rapidly became part
of an elite bike culture and recognized that it was time to
evolve into another realm, to set an industry on its heels
and to serve notice that the Bagger Nation had arrived.
Extending from his chopper roots, Paul began the
Bagger Nation, a faction of customized big twins fully
loaded, not only with accessories and paint but big
Paul Yaffe’s Bagger Nation has the final say
boy sound systems. Identifying that big beats were
not just for the “cage” Paul used the brand he grew
up with, the brand he could take on his revolutionary
ride, the brand that shared his innovative approach to
custom...Rockford Fosgate.
So when it came time to build a bike for the 2010 Easy
Rider Tour Paul knew he had to once again take it
to the next level. Yaffe knew that along with his PYO
(Paul Yaffe Originals) accessories he’d have to one-up
anything he’d ever done with a 2-wheel sound system.
Paul would yet again set the stage and have the final
say. He would take the builds RF system over the top
and make it not only a part of the project but one of
“Game Over’s” focal points.
Keeping the system on par with the Road Glide’s
aggressive theme Paul set out to not only equip the
bike, but also arm a customized Bushtec trailer with RF
munitions. Game Over is the first project to receive RF’s
continued on pg.27
AD
SUPERIOR SOUND QUALITY
WITH EXCESSIVE POWER
INNOVATION & DESIGN
Output Power
350
330
310
290
270
250
230
210
190
170
150
100
200
300
400
500
600
700
800
900
1000
2000
3000
4000
5000
6000
7000
8000
90000
10000
15000
20000
Frequency
T1000-4ad T1000-4
POWER AD Amplifiers Feature:
• The Rockford Fosgate Patent Pending ad topology brings a
high efficiency class d amplifier design to a full range
application.
• DTM (Dynamic Thermal Management) seamlessly manages
the output and power supply temperatures, distributing the
excess heat across the entire amplifier for extended
thermal time.
• The Constant Power circuit design actively monitors and
increases voltage/current with the speaker impedance rise
to optimize power output.
• Available in 1000 and 800 Watt 4 channel models.
(T1000-4ad) and (T800-4ad)
25 VOLUME 3.0
Rockford Fosgate POWER ® amplifiers, available at authorized retailers worldwide rockfordfosgate.com • 800.366.2349

WE ARE
Punch boosted rail amplifiers, (1)
PBR300x4 and (2) PBR 300x1‘s
pour-it-on the baggers (4) pair of
Punch speakers. Keeping it true,
and in an attempt to not ignore
the haters, the tag along trailer
highlights (2) Punch P3 10’s, (4)
pair of Marine M262 6.5” speakers
and enough Punch power to rival
the stroked out V-twin.
Once again Paul Yaffe’s Bagger
Nation has set the bar and “tilted”,
not only the motorcycle world, but
the 12-volt one as well...
G4MEOVR!
winner
Justin Talavera
27 VOLUME 3.0
ROCKFORDFOSGATE.COM 28

High octane gasoline pumps through some people’s veins,
Tim Ferguson realized almost immediately in life that he
was one of them. As an adrenalin junkie Tim’s love for mini
trucks, downhill mountain bike racing and big Rockford
Fosgate systems was instinctive, personifying the “go big
or go home” mentality. Tim’s win at all costs approach has
given him iconic status not only on the hill but on the car
show circuit as well.
Like everything Tim’s involved with he
bypassed mild and went straight to
wild on his larger than life 2000 Dodge
Dakota R/T mini truck! After countless
body, suspension and performance mods
it was time to design the truck’s interior
and sound system. Ferguson, along with
his local Arizona mod-squad, went all-out
fabricating custom door panels, center
console and subwoofer enclosure.
Creating a 12-volt gallery which
showcases the heart and soul of the
build...the Rockford Fosgate hardware.
Staying true to Tim’s “go big” philosophy
he entrusted his one-off build with RF’s
finest...Power Series. Tim packed the cab
with (2) sets of 6.5” Power series speakers
and brought them to life with a Power
T-6004 amplifier, injecting over 600 watts
of power to the front stage. Keeping the Dakota’s cab on
par with the vocals the R/T’s low-end received (2) ground
pounding Power T1 15‘s harnessing over 2000 watts of
Rockford Fosgate venom. This delivered full-size sound in a
compact environment.
Not being content with just an audio arsenal in the cab,
Ferguson wanted to guarantee the Dakota’s “car show”
audience was entertained as well. Stacking the bed with an
additional (3) Power Series T1 15’s, (1) T1500-1bdCP and
(2) sets of Power 6.5” components. Fully equipped, the oneman
show is not hard to find, whether it’s being a feature
truck at SEMA, winning truck of the year or just draggin’
the local streets with the volume WFO Tim Ferguson’s R/T
proves that he who dies with the biggest Rockford Fosgate
system and the fastest downhill time wins!
29 VOLUME 3.0
ROCKFORDFOSGATE.COM 30

e adjusted to fully customize your equalization taking
auto-tune to the next step. This allows the 3Sixty.3 to be
installed by anyone ranging from novice to professional.
These features are possible through the use of a 32-
bit High Performance DSP with Dual MACS, and 72-bit
accumulator, an Analog to Digital Converter featuring 24-
bit precision using Advanced Delta Sigma Architecture,
and a Digital to Analog Converter featuring 24-bit
precision with 108dB Dynamic Range.
were identified and removed from the system. This stage
typically takes a couple of prototype runs for a product
of this complexity. Firmware and software development
also progresses during the prototype phase to identify
and correct any early issues. Software and firmware at
the prototype phase was designated “Alpha” code.
by:
PHILOSOPHY
The 3Sixty family was created to solve the potential
issues of installing aftermarket systems in vehicles
with factory or aftermarket source units. Designed
as an OEM integration piece, the 3Sixty.3 upgrades
the performance of factory sound systems. The
3Sixty.3 also is designed to customize and provide
the ability to tune the system equalization to your
personal preference.
INSPIRATION
The 3Sixty.3 comes from the success of our
previous 3Sixty.1 & 3Sixty.2 models. The 3Sixty.1/.2
models have had very good acceptance from our
avid customers. These same customers have
been very passionate about expressing what
features they would like to see in a next generation 3Sixty model.
I’m happy to say we evaluated and incorporated just about every request
received through our website “Bright Idea” feedback form. Our customers
are what will make the next generation 3Sixty.3 an outstanding product that
will exceed all their expectations.
CHALLENGES
There are many challenges involving the design of the 3Sixty.3. The
main challenge was to incorporate over 50 new features as well
as many performance improvements over the current 3Sixty models.
The 3Sixty.3 is a completely re-engineered product involving new electrical,
mechanical, firmware and software design.
One of the main challenges was to incorporate more intelligence into the device
to perform such functions as auto-gain, auto-normalization and auto-tuning.
These automated routines substantially reduce the time and effort to set up a
3Sixty.3. The challenge was that these automated routines require extensive
algorithm development, testing and more robust processor power.
WHAT SETS IT APART
No doubt that the main feature setting the 3Sixty family
apart is the ability to control and tune wirelessly via
mobile devices. This was accomplished in the 3Sixty.1
and 3Sixty.2 via Palm and Windows Mobile devices. The
3Sixty.3 will go one step further and communicate with
Apple iPhone/iPod Touch/iPad devices over an optional
wireless Bluetooth link as well as an optional wired
interface. Another unique feature is the ability to stream
wireless music from any Bluetooth A2DP mobile device
directly to the 3Sixty.3 via the optional Bluetooth link.
The 3Sixty line of products also incorporate a patented
frequency normalization process, which involves denormalization
of OEM sources as well as channel summing
to create full-range channels.
TIMELINE
The 3Sixty.3 has been a work in progress
since the release of 3Sixty.2. We have
carefully evaluated user feedback, both
good and bad. We used this feedback
to carefully conceptualize new hardware,
firmware, and software architecture.
This was the first and most critical step
in the process since it impacted all other
development tasks.
Once each component was individually
tested for compatibility, the next step was to
integrate the components. This step involved
creating prototypes of the complete system.
The prototype phase was where many “bugs”
The next phase was design validation testing that involved
a stable hardware platform as well as stable firmware
and software codebase which was designated ”Beta”
code. The design validation phase was where extensive
in-vehicle testing was performed to identify installation
issues, hardware issues, firmware, and software issues.
All of these needed to be isolated, fixed, and verified
before moving on to the next phase, which was a preproduction
or “Pilot Run”. After a successful pilot run,
the Rockford Fosgate 3Sixty.3 was finally cleared for
production, making it one of the intuitive signal processors
in car audio history.
WHAT MAKES IT DIFFERENT
The 3Sixty.3 offers many more features compared to competing
devices, which make it the most customizable processor in
car audio. Most products have moved to EZ-setup type
methodologies with a “take-it or leave-it” approach to
equalization. There are advantages to this method in terms
of ease of setup, but the big disadvantage is being stuck
(in most cases) with what the processor determines as your
listening preference.
A majority of our customers are “fanatics” and all have different
equalization preferences in their system. For this reason, we offer an
automated auto-tune process, while still allowing the user to adjust
every single control in the 3Sixty.3. There are over 100 independent
controls per channel that can
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