Audio Database


Lo-D SR-5100
59,800yen(around the 1975 time)

The AM/FM stereo receiver which combined the audio part and 1.9-microvolt tuner of 25W+25W.

The grounded-emitter inverted Darlington pure complimentary OCL circuitry is used for a power amplifier part.

2 power sources and a low noise monolithic IC are adopted as the equalizer stage.

FM muting switch is carried.

The mic mixing circuitry is carried.

Rating of a mode
Form FM/AM receiver
<Power amplifier part>
Effective output 25W+25W (8 ohms, both ch(es) drive, 1kHz)
Dynamic power (IHF) 70W (8ohms)
THD 0.8% or less (at the time of an effective output)
Cross modulation distortion 0.8% or less (at the time of an effective output)
Output bandwidth (IHF) 10Hz - 60kHz
Dumping factor 30 (1kHz, 8ohms)
<Preamplifier part>
Input sensitivity/impedance Phono: 2.5mV/50kohm
Aux: 200mV/100kohm
Tape PB: 200mV/35kohm
Mic: 7mV/30kohm
Phono maximum permissible input 100mV (RMS, 1kHz)
<FM tuner part>
Practical speed (IHF) 1.9 microvolts
Capture ratio 1.0dB
Effective selectivity 52dB
S/N 67dB
The semiconductor used Transistor: 16 pieces
FET: One piece
IC: Five pieces
Diode: 25 pieces
Supply voltage AC100V, 50Hz/60Hz
Power dissipation 65W (Electrical Appliance and Material Control Law)
Dimensions Width 413x height 136x depth of 376mm
Weight 8.2kg