Audio Database


Lo-D SMR-5240
89,800yen(around the 1975 time)

The stereo receiver corresponding to 4ch developed making full use of the semiconductor technology and the circuitry technology.

The four RM-SQ matrix circuit is built in.

It is also possible to have adopted the OCL circuitry as a power amplifier part, and to double an output by the BTL circuitry at the time of 2ch.

FET is used for FM tuner part.

The pair mic mixing circuitry is carried.

Rating of a mode
Form 2ch / 4ch receiver
<Power amplifier part>
Effective output 10Wx4 (8 ohms, 4ch drives, 1kHz)
Dynamic power (IHF) 65W (8ohms)
THD 1% (at the time of an effective output)
Cross modulation distortion 0.5% (at the time of 1 / 2 effective output)
Output bandwidth 20Hz - 30kHz
Frequency characteristic 20Hz-20kHz±1dB
Dumping factor 25 (1kHz, 8ohms)
<Preamplifier part>
Input sensitivity Phono: 3mV (2ch), 200mV (4ch)
Aux, Tape: 200mV
S/N Phono:60dB
<FM tuner part>
Practical speed (IHF) 2 microvolts
Capture ratio 1.2dB
Selectivity 46dB
S/N 64dB
The semiconductor used Transistor: 57 pieces
FET: One piece
IC: Three pieces
Diode: 24 pieces
Supply voltage AC100V, 50Hz/60Hz
Power dissipation 75W (Electrical Appliance and Material Control Law)
Dimensions Width 490x height 136x depth of 390mm
Weight 9.6kg