Aug - AmericanRadioHistory.Com

QUAS
with BEAM
AMPLIFIERS *
* "For applications requiring up to 30 watts...
this unit should satisfy the most critical."
-Audio Equipment Report
The outstanding audio achievement of
recent years, the superb QUAD II system
provides unparalleled audio reproduction
plus complete flexibility of control. Add
high efficiency., harmonic filtering, pushbutton
equalization and channel selection,
exact pick -up matching, balanced feedback
throughout, precision made 13 -section
output transformer, low distortion,
superb British craftsmanship, and the
smartest styling in high fidelity today -
and you see why QUAD is the recognized
world leader in high quality audio
reproduction. Hear it at your earliest
opportunity.
POWER:
Rated for less than 1 /10% distortion at 15
watts output, this amazing system will readily
provide output power up to 30 watts.
RESPONSE:
QC lI Control Unit: 10- 60,000: 0.5db
QUAD II Amplifier: 20- 20,000 cps, flat
Total Distortion, QC Il: 0.02°0
Total Distortion, QUAD Il: Less than
1 /10%
Full complement of controls, including filter
slope, bass, treble, 3 channel selection
and record compensation.
QC II Control Unit $120.00
Quad II Amplifier $130.00
System Complete $237.50
For detailed specifications on the Beam
QUAD AMPLIFIER, and literature on Beam
Stentorian Speakers from 8" to 12" sizes,
5 and 15 watt super tweeters, woofers,
matching crossovers, 10" and 12" Duplex
(Twin Concentrics), and Beam enclosures,
write:
BEAM
INSTRUMENTS CORPORATION
Empire State Building
350 FIFTH AVENUE NEW YORK, N. Y.
Charter Member:
Institute of High Fidelity Manufacturers, Inc.
84
ANCIENT CHINA
Continued from page 82
acuteness and refinement of sense -perception;
they had no test equipment.
They also had to develop a degree of
patience and perseverance unknown
in contemporary Western research,
where the pressing demands of warfare
and commerce always urge toward
the fastest shortcut, toward incomplete,
compromise solutions. The Chinese
always strove for perfection, nothing
less. Too much modern research aims
at immediate ends, oblivious of ultimate
values. The ancient scholars
and craftsmen, with a single mind,
set out for basic truth and perfect
beauty.
To move from the general to the
particular, music is one of the few
modern activities (I mean of course
serious music) still conceived as timeless,
still largely uncorrupted by the
urge toward quick success on a low
level. So is its pleasant offspring, high
fidelity - but both now are threatened
by popularity, the latter more than the
former. One hears the word "perfectionist"
used almost as an insult, which
is unfortunate. For one, I think that
if high fidelity is to become and remain
an important cultural factor, it
must embody some of the "fidelity"
of spirit of the ancient Chinese. Otherwise
- who knows? - droughts,
earthquakes, floods, barbarians, political
corruption, and tyranny!
LONDON REPORT
Continued from page 31
to be technically excellent. Unfortunately,
because of time limitations only
a few records could be played, and
none of them for very long. A row of
neon lights allowed one to see how
many watts were going into the
speakers at each moment, a most
interesting and valuable addition.
A dance band number [Audiophile,
78 -rpm microgroove] played only on
the two eight -inch units, was bright
with lots of presence and took twenty
watts at one or two loud bits to fill the
hall. The same wattage, over the
larger speakers, gave one a fine passage
for the full orchestra in the Kleiber-
Concertgebouw recording of the Beethoven
Pastoral [LONDON LL 916],
played (because of uneven British
pressings) from a metal part. A Bach
aria by Kathleen Ferrier had a remarkable
quality [LL 6881, partly due to
the effect of hearing the voice of a
First
things
last!
We freely confess that when we began
planning the Tannoy high- fidelity
Domestic Sound System, we did not
contemplate designing and manufacturing
our own phono- cartridge. After all,
there were several excellent cartridges
already on the market.
We changed our minds when the first
power amplifiers and 'Autograph'
pre -amplifiers began to emerge from the
assembly lines. It was evident that
the almost uncanny faithfulness of the
amplifying chain, ending with the now
world- famous Dual Concentric Speaker,
justified the use of a cartridge of more
than ordinary freedom'.
Our engineers therefore set about the task
of designing a cartridge which was free
to extract and pass on, everything from
the recorded groove without any spurious
effects or blanketing resonances. The
result is the Tannoy Variluctance
Cartridge ... a precision transducer which
would be completely wasted on any but
the very finest of high -fidelity
reproducing equipment.
T E C H N I C A L S P E C I F I C A T I O N
Every cartridge hand -made and laboratory tested.
Upper frequency limit > 16,000 cps.
No resonant peaks.
No undamped resonances in sub-supersonic range.
Simple turn -over mechanism.
Stylus assemblies completely independent.
Instantaneous replacement of .soli without use of
tools.
Optimum lateral to vertical compliance ratio.
Very low egectire dynamic mass.
Output: 20 mV at I2 cm per .second.
Termination load: 50,000 ohms.
Tracking weight: 6 grams Jhr nU discs.
T,aNNOY, VARILUCTANCE
Phono. Cartridge
For service in the Foiled States
call New York WIIitehall 3 -7000
TANNOY (CANADA) LTD
36 Wellington St. East, Toronto 1, Ontario, Canada
HIGH FIDELITY MAGAZINE