Sharp SM-1144H Service Manual

SM-114 SM-
INTEGRATED
STEREO AMPLIFIER
MODEL
SM-1144H
SM-1144HB
In the interests of user-safety the set should be
restored to its original condition and only parts
identical to those specified be used.
GENERAL DESCRIPTION Damping factor: more than 30 (at 1kHz, 8 ohms)
Power source: a.c. 110/220/240V. Power bandwidth: 10Hz ~ 35kHz (4 ohms, Both channels
50/60Hz driven)
Power consumption: 250W
Semiconductors: 1-IC (Integrated circuit) PRE-AMPLIFIER
8- Transistor Circuit: Direct coupled equalizer circuit 'CR'
7-Diode type tone control
1-LED (Light Emitting Diode) Input sensitivity and input impedance:
Dimensions: Width: 408mm PHONO: 3mV/50k ohms
Height: 134mm AUX/TAPE 2: 150mV/50k ohms
Depth: 265mm TUNER: 150mV/50k ohms
Weight: 6.5kg TAPE 1: 250mV/50k ohms
Output level and loaded impedance:
MAIN AMPLIFIER TAPE REC: 30mV/80k ohms
Circuit: Differential amplifier, semicomple- Phono overload: 200mV
mentary system, OCL (Output Capa- (RMS, 1kHz, 0.5% THD)
citor-Less) RIAA curve deviation: 30Hz ~ 15kHz-+0.5dB
Music power output (1kHz): Frequency response: 10Hz ~ 70kHz +3dB (AUX.)
2 x 50W/4 ohms, Both channels driven, Tone control:
0.8% distortion | Bass: +8dB at 100Hz
2 x 37W/8 ohms, Both channels driven, Treble: +10dB at 10kHz
0.8% distortion Rumble filter: —3dB at 30Hz, 6dB/oct
Continuous power output (at 1kHz):
2 x 35W/4 ohms, Both channels driven, Specifications of this model are subject to change without
0.8% distortion prior notice.
2 x 27W/8 ohms, Both channels driven,
0.8% distortion
Intermodulation distortion:
0.08% at 5W output
SHARP CORPORATION OSAKA, JAPAN
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