Gogledd the Otter 🏴󠁧󠁢󠁷󠁬󠁳󠁿Mar 23

One fluke eBay win, and I have a new friend! Say hello to the Schaller Solo, a 25W 'universal amplifier' from the cusp of the 70s, containing eleven transistors and with a built-in tremolo. Advertised as for 'guitar, organ and other instruments'. So cute and tiny, who could resist?

The tremolo channel sadly doesn't work at all, but I can't find a schematic that I could use to fix it. Might have to reverse engineer the PCB at this rate. Anyone on Fedi know where I might source a schematic for this thing?

Show threadyouknowthatonepersonwithaface
@Gogledd I have no idea if it exactly the same in the pedal as it was in your amp (or even if it's the same company, the tremolo I'm thinking of is a West Germany brand), but I know for a fact I've seen clones of the Schaller TR-68 floating around, would that schematic work?
Mar 23 at 10:59pmWeb
Show threadGogledd the Otter 🏴󠁧󠁢󠁷󠁬󠁳󠁿Mar 23
@Thatonepersonwithaface It is indeed the West German Schaller - And it's certainly possible :D
Show threadyouknowthatonepersonwithafaceMar 23
@Gogledd I found the tagboard on tagboardeffects too, might help? Theres some conversations and a layout on tagboard too: https://tagboardeffects.blogspot.com/2012/03/schaller-tremolo.html?m=1#comment-form