Scott 344-C Service Manual

Scott... where innovation is a tradition
H. H. Scott. Inc. 111 Powdermill Road, Maynard, Mass., 01754
SERVICE MANUAL
FOR
MODEL 344-C
SPECIFICATIONS
TUNER _(FM-MPX)
Usable Sensitivity (IHF) 1.9 microvolts
Cross Modulation Rejection 80 db
Signal to Noise Ratio below 100% modulation 60 db
Total Harmonic Distortion 6%
Frequency Deviation (Drift) 0.02%
*Frequency Response 20 to 15,000 Hz + 2 db
Capture Ratio 2.5 db 7
Selectivity 40 db
Tuning Range 88 to 108 mc
Accuracy of Calibration 0.5%
Separation 40 db or more
FM & Limiting Stages 9
*This is limit of FCC Stereo Broadcast specifications. All H. H. SCOTT tuners have
far wider frequency response.
TAPE OUTPUT
Rated Voltage Output to Tape Recorder 0.4 v
Minimum Recommended Load Resistance Greater Than 47 k ohms
PRE-AMPLIFIER
Input:
Tape Head - Input Impedance 47 k ohms
Signal for Rated Output 3 mv
S/N Ratio 45 db
Phono-Input Impedance (All Switch Positions) 47 k ohms
High Level Inputs - Input Impedance 47 k ohms
Signal for Rated Output 400 mv
S/N Ratio 80 db
Frequency Response in Flat Position 25-45 khz + 3 db
Treble Controls Measured at 10,000 Hz, Boost & Cut 10 db + 2 db
Bass Controls Measured at 50 Hz, Boost & Cut +10 db - 15 db
Loudness Compensation (maximum) +11 db @ 50 Hz
Loudness Compensation +2 db @ 10 k Hz
AMPLIFIERS
Power Ratio (watts per channel)
@ 0.8% Harmonic Distortion
Continuous Output Single Channel
@ 8 ohms, 0.8% Harmonic Distortion 32 watts
Continuous Output Both Channels
@ 8 ohms, 0.8% Harmonic Distortion 28 watts