Restoring a vintage Acrosound Stereo 20

the thermionic watercooler

Restoring a vintage Acrosound Stereo 20

Postby dividebytube » Sun Nov 25, 2012 7:58 am

No, 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.
dividebytube
 
Posts: 15
Joined: Wed Nov 21, 2012 9:59 am
Location: Grand Rapids, MI

Return to diy hifi

Who is online

Users browsing this forum: No registered users and 11 guests

cron