low 10 mV input; equivalent to less than 3 micro-
volts at input.
TAPE OUTPUT
0.3 volts with rated input, less than 150 ohms
source impedance, to operate in 47,000 ohms or
greater.
VOLTAGE AMPLIFICATION IN DECIBELS
Auxiliary, TUNER, and TAPE to TAPE OUTPUT; 0
dB
PHONO 1 and PHONO 2 at 1000 Hz to TAPE OUT-
PUT:
42 dB
TAPE HEAD at 500 Hz to TAPE OUTPUT; 44 dB
LEFT PLUS RIGHT OUTPUT
Adjustable 0 to 6 volts from generator impedance
of 5,000 ohms.
BASS CONTROLS
±18 dB at 20 Hz, with friction clutch for independ-
ent adjustment of each channel.
TREBLE CONTROLS
±18 dB at 20,000 Hz with friction clutch for in-
dependent adjustment of each channel.
HF FILTER
Flat, or 5,000 Hz cutoff, 12 dB per octave.
LF FILTER
Flat, or 5,000 Hz cutoff 12 dB per octave.
SEMICONDUCTOR COMPLEMENT
23 Silicon Rectifiers and Diodes
34 Silicon Transistors
2 Silicon Bilateral Switches
2 TRIAC
POWER REQUIREMENTS
120 volts, 50 60 Hz, 70 watts at zero signal output,
200 watts at rated output
MECHANICAL INFORMATION
SIZE; Front panel, 16 inches wide by 5 7/16 inches
high; chassis, 15 inches wide by 4½ high by 14½
deep, including connectors. Clearance in front of
mounting panel including knobs, 1½ inches.
WEIGHT: 25 pounds net, 41 pounds in shipping car-
ton.
FINISH: Front Panel: Anodized gold and black:
Chassis: Chrome and black.
TREBLE: The high frequency program material is
modified to suit your taste. Right channel is the outer
knob, the left channel is the inner knob.
VOLUME: Precision tracked at all listening levels.
(0 to —65 dB.) Does not change stereo balance as
loudness is changed.
MODE SELECTOR: Seven positions: Left channel
only to both speakers, Right channel only to both
speakers, Stereo Reverse, Stereo, Mono, L + R to
left speaker only, L + R to right speaker only.
COMPensation: Select from two circuits that tailor
the response to correct for the characteristics used
in the recording of phonograph records.
TAPE: Monitor the recorded program from the tape
or hear the program that is being recorded.
PHASE: Electronically reverse phase in the left chan-
nel to correct "out of phase" program sources.
SPEAKER: Switch the loudspeaker system ON or
OFF without affecting the performance of headphone
jacks.
LF FILTER (Rumble Filter): Flat or roll-off 12 dB per
octave above 5,000 Hz, down 12 dB at 20,000 Hz.
LOUDNESS: COMPENSATED position boosts low
frequencies for low level listening. Operates as a
function of volume control rotation so full compensa-
tion is obtained at lower volume levels and flat re-
sponse is obtained at full volume.
BALANCE: Natural balance at center position, attenu-
ation of left or right channel by rotating control.
FACILITIES AND FEATURES
INPUT SELECTOR: Select from six sources —AUX-
ilary, TAPE, TUNER, PHONO 1, PHONO 2, or TAPE
HD
BASS: The low frequency program material is modi-
fied to suit your taste. Right Channel is the outer
knob, the left channel is the inner knob.
9
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