Restoring a vintage Acrosound Stereo 20
Posted: Sun Nov 25, 2012 7:58 amNo, not the Stereo 20/20, but the rare Stereo 20, er, monoblock. Some old literature on this series of EL84 amps:
http://www.hifilit.com/hifilit/Acrosound/gold-1.jpg
I bought this single "20" on Ebay, curious about the DC-coupled circuit and the quality iron. One of my favorite all-time amplifiers, a modified Eico HF-60, uses Acrosound iron too.
http://www.freeimagehosting.net/newuploads/qmfj7.jpg
Anyway, the one I got had shot tube sockets, aged components, but still managed to work if you made sure the tubes were plugged in correctly. Oddly enough, there is an E-Pay seller who sells exact fit replacement boards for the Acrosound 20/20, which are also the same for the 20. So a quick lead swap job and here we go
http://www.freeimagehosting.net/newuploads/w5i82.jpg
The sound through my test speaker is quite pleasant - maybe someday I can find a matching amplifier so for now I'll just have to scour the web.
http://www.hifilit.com/hifilit/Acrosound/gold-1.jpg
I bought this single "20" on Ebay, curious about the DC-coupled circuit and the quality iron. One of my favorite all-time amplifiers, a modified Eico HF-60, uses Acrosound iron too.
http://www.freeimagehosting.net/newuploads/qmfj7.jpg
Anyway, the one I got had shot tube sockets, aged components, but still managed to work if you made sure the tubes were plugged in correctly. Oddly enough, there is an E-Pay seller who sells exact fit replacement boards for the Acrosound 20/20, which are also the same for the 20. So a quick lead swap job and here we go
http://www.freeimagehosting.net/newuploads/w5i82.jpg
The sound through my test speaker is quite pleasant - maybe someday I can find a matching amplifier so for now I'll just have to scour the web.