LUXMAN vintage audio
Standard SR157SW amplifier
Around 1965 issued amplifier for European markets made by 'Standard Electric' company Japan.
not yet available
There are models of this kind amplifier with RCA input/output sockets.
Light and small footprint amp. Wood case. Well build and good parts used.
This amp employs a mix of germanium and silicon transistors.
Distortion (THD 20Hz - 20kHz) < 0.1% at continuous output per channel: 7 Watts RMS per channel.
Speaker impedance: 8~16ohms
Signal/noise ratio: 85dB power amp. section
4 x DIN input.
Germanium Power transistors ^
click here to download the schematic diagram of the Standard SR157SW (redrawn by Limhes.net)
PCB with silicon transistors and germanium drivers ^
You may replace some diodes, capacitors and resistors in the power supply and power rail.
After modification this amp is capable of producing 2x 10 Watts RMS.
interior after update ^
Back Panel with new speaker connectors ^
The sound is very good for such a small amplifier.
© Hans Hilberink - PE1MMK ® 2003 - Last update: 10-09-2016.