Wednesday, February 1, 2012
Aiwa A22 Micro Component Stereo Amplifier
Proving that good (read: great) things come in small packages, here's the Aiwa A22 Amplifier. A little beauty at a very cool maximum output of 36wpc. I picked this one up at a local flea market with a matching tuner and cassette deck for $10. Sadly the particleboard rack that they came in was beyond saving. The tuner just needed some TLC however the cassette deck was long gone with signs of corrosion, deteriorated belts and the unsettling feeling that some minor has tried to press every control button down at once.
This little amp was not without it's issues as well. Mainly we were looking at some corrosion from the top case which had come into the unit leaving it's telltale signs on the bottom casing and the transformer. To really clean this up, the whole unit would have to be disassembled, sanded, sprayed and then put back together.
Corrosion even got to the bottom of the PCB which was easily cleaned off:
Apart from that, it needed the usual cleaning of potentiometers, full capacitor replacement, polishing of the faceplate and one not-so normal modification, changing of the speaker outputs.
Old filter capacitors:
Nicely recapped board:
There is only outputs for one set of speakers, however these were the old DIN style rarely used now so these were changed over to binding posts.
Din Sockets removed:
New binding posts installed:
Back in in the amp:
With a bit more of a clean up, new cable ties and re-routing the wiring so it's a bit cleaner, we have a beautiful little amp it's sound is surprisingly bright, almost a bit too bright for me but the customer who purchased it was over the moon and in the end, that's what counts.
On the bench having it's headphone test run:
Paired up with it's matching R22 stereo tuner:
Enjoy some more modelling shots!