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The
company that boasted about producing Hi-Fi equipment since 1947
declared that the Stereomaster 340B gives 30 W (sine) per channel
with 7591 tubes in the Push & Pull system. Very characteristic
of the 340B and the predecessor model 340A was the power supply on
rectifiers, not voltage doublers. The 340A was powered by two 5AR4 /
GZ34 duodiodes, and the Scott 340B powered the electronics with a
graetz semiconductor bridge.
The dimensions of the receiver are (the first two dimensions are for
the front panel) 42 cm (width) x 14 cm (height) x 35 cm (depth).
Sonically, the 340B is something for lovers of a stronger impact.
The company used bandwidth control in the feedback circuit,
therefore the "bass" and "treble" are regulated by - + 12 dB. If you
add the "physiological" boost to this with a switch on the voice
potentiometer, hardly any loudspeaker can carry such a "low" and
strong signal. The phono equalizer preamplifier is a successful
design on two 12AX7 / ECC83. The receiver also has an additional
"EXTRA" input and a separate set of inputs and outputs for a tape
recorder. The drivers of the power tubes are the well-known 6U8 /
ECF82 (originally most of the tubes were TELEFUNKENs). The tuner
provides excellent sensitivity, and the MPX decoder is something
that has always distinguished SCOTT. Built on the ECC81 / 12AT7,
ECC83 / 12AX7 and 6KE8, it provides excellent separation and full
“mono / stereo” automation with a weaker signal. On the back of the
Chassi, there are two cables for changing the impedance of the
speakers, respectively 4, 8 and 16 ohms. by the way, the Japanese
did not use 4 ohms. The appearance of the receiver is more in
keeping with the design of the 70's. All knobs are Bakelite with
brass "caps". Unfortunately, glue, unlike lamps, often did not stand
the test of time and you often have to buy and stick these covers
(this also applies to the FISHER construction). Air assembly looks
interesting, assembly quality "military", equipment on decent
components, without the infamous oil capacitors. But lest it were
too good, the aggregate (capacitor on the anode power supply) lost
its capacity and the receiver got "hum". The entire chassis is made
of an aluminum sheet supported in some places by copper. SCOTT wrote
that the use of non-magnetic aluminum reduces the level of noise and
rumble, and the addition of copper plate in some systems improved
the parameters of the electronics. The equipment works without too
much interference as it was 40 years ago. In the 1960s, a lot of
audio equipment was manufactured to be mounted in consoles or walls.
The Americans appreciated wooden cases more. The housing in this
model is a modern metal production covered with a wood-like foil.
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