LUXMAN vintage audio |
Standard SR157SW amplifier
General:
Around 1965 issued amplifier for European markets made by 'Standard Electric' company Japan.
front ^
Owners manual:
not yet available
interior ^
special futures:
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.
Specifications:
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 ^
Schematic:
click here to download the schematic diagram of the Standard SR157SW (redrawn by Limhes.net)
PCB with silicon transistors and germanium drivers ^
Modifications:
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 ^
Sound:
The sound is very good for such a small amplifier.
© Hans Hilberink - PE1MMK ® 2003 - Last update: 10-09-2016.