Catalog Pages: "Decoding the DNA of Sound" - Klein + Hummel

Mid-Field Monitors
NEW
O 410
Active Mid-Field Monitor
Back in 1967, Klein + Hummel launched the world’s first active studio monitor,
the OY. The O 410 represents the latest incarnation of the many technologies pioneered by Klein + Hummel during
the intervening 40 years. Engineering excellence applied to all aspects of the O 410 design brings a new benchmark
in audio reproduction quality. A waveguide featuring Mathematic ally Modeled Dispersion (MMD), flexible acoustical
controls, various input options and an extensive mounting hardware range allow the O 410 to be used in diverse
acoustical conditions, with any source equipment, and in a wide variety of physical locations.
The O 410 has been designed for use as a mid-field or main monitor. It is particularly well-suited for use in music,
broadcast and post production studios for tracking, mixing and mastering. The O 410 can be used free-standing
or flush-mounted into a wall, and, in multichannel systems, can be mixed freely with other loudspeakers in the
Klein + Hummel range.
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Frequency response
THD at 95 dB SPL at 1 m 2 nd 3 rd
large user-rotatable
waveguide
hybrid class A-B / H
amplifiers
informative display
can be dimmed for low
ambient light and behind
the screen applications
dB
90
80
70
dB
– 10
– 20
– 30
– 40
– 50
– 60
O 410 Mid-Field Monitor
large ports minimize
turbulence, resulting in
reduced bass compression
and chuffing noises
Mid Sized 3-way System
Q The most important part of the frequency spectrum is reproduced by a separate midrange driver
Q Extremely low harmonic and intermodulation distortion results in clean sounding audio reproduction
Q Exceptionally neutral sound stage from 30 Hz to 24 kHz (– 3 dB)
Q Ideal cabinet materials with excellent self-damping properties
Q Structural resonances avoided using LRIM (Low Resonance Integral Molding)
Q Vented enclosure extends bass response, even at very high output
Q Modern-looking design with optional grille
Q Extensive accessories allow for a multitude of installation possibilities
Q Magnetically shielded for use next to CRT screens
Mathematically Modeled Dispersion (MMD)
Q Three stage design process:
A Waveguide is mathematically modeled before physical prototypes are realized
A Physical prototypes are measured under anechoic conditions to verify theoretical performance
A Extensive listening tests correlate objective measurements and subjective perception
Q Wide horizontal directivity gives increased freedom of movement along the mixing console
Q Narrow vertical directivity reduces the effect of early reflections off the console surface
Q MMD is easily rotated in the field when horizontal mounting the cabinet
Q Perfect directivity pattern leads to a smooth power response
Advanced Electronics
Q Transformer balanced input stage (TIM 1) equipped with special distortion reduction crossover function
Q 16...24-Bit, 20...216 kHz digital input stage (DIM 1) for AES3, AES 3id and S/P-DIF signals
Q Electronics can be remotely accessed when the cabinet is flush mounted (REK 1 and CP 2, 5, 10, 15, 20, 25, or 30)
Q Integrated electronic limiter for each driver
Q Hybrid class A-B amplifiers, employed for their best overall performance, are also protected
Q Active three-way crossover with 24 dB/oct. slopes
Q Input options give flexibility without burdening basic product:
A Transformer balanced input stage equipped with special distortion reduction crossover function
A 16…24-bit, 20…216 kHz digital input stage for AES3, AES 3id and S/P-DIF signals
A XLR and BNC inputs, and a BNC output for flexible and robust interconnectivity
Q Display for signal type, protect and digital status is integrated into the MMD, together with a K+H logo
Q Controls adapt the monitor’s response to compensate for the loudspeaker’s environment:
A Bass, mid and treble controls for specific and common acoustical issues
A Parametric EQ for low-frequency corrections
Q Accelerated Heat Tunneling (AHT) ensures effective amplifier cooling whether the cabinet is mounted
vertically or horizontally
Q Electronics can be remotely accessed when the cabinet is flush mounted
Q Electronics can be remotely powered on with two modes of operation (0 V and 12 V trigger)
Q Attention to detail in design results in low self-generated noise
0.05 0.2 0.5 1 2 5 10 kHz
Group delay
0.05 0.2 0.5 1 2 5 10 kHz
Horizontal directivity
125 250 500 1,000 2,000 4,000 8,000 16,000
f[Hz]
60
50
ms
20
0
–20
90
60
30
0 degree
– 30
– 60
– 90
– 90
0.05 0.2 0.5 1 2 5 kHz
Multitone distortion O 410 at 95 dB SPL at 1 m
Acoustical controls Parametric equalizer
dB
0
– 10
– 20
– 30
– 40
0.05 0.2 0.5 1 2 5 10 kHz
0.05 0.2 0.5 1 2 5 10 kHz
Vertical directivity
– 70
– 80
125 250 500 1,000 2,000 4,000 8,000 16,000
f[Hz]
dB
0
– 5
– 10
– 15
0.001 0.1 1 kHz
dB
90
80
70
60
50
40
30
20
90
60
30
0 degree
– 30
– 60
– 90
0 to 3 –3 to 0 – 6 to – 3 – 9 to – 6 – 12 to – 9 – 15 to – 12 – 18 to – 15 – 21 to – 18
Decrease of SPL (dB)
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