| 24kilo |
Just bought a Olympic SA-812, I can't find anything on it. It has one 12AX7 and two 50C5's. I just changed the caps and it sounds great...But I want to use it for my Guitar amp and would like the Schmatics so I can mod the front end for overdrive. Any Help? Or can you tell me how this tube Config is laid out? BTW here's a pic
http://i21.ebayimg.com/05/i/06/85/65/c2_1_b.JPG |
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| Eli Duttman |
Based on the word "Stereo" on the front panel, I'm going to guess that there are 2 single ended channels using a 12AX7 section driver and a 50C5 "final".
The 50C5 data sheet suggests that the amp uses a series heater string and doesn't have a power transformer. That's both cheap and DANGEROUS.
Perhaps the best thing to do with that unit is canabalize the O/P "iron". Turning it into a safe guitar amp is probably not in the cards. |
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| 24kilo |
| I should have said, Sorry it's Mono. It says Stereo but it mono. The Speakers are inside. I've already grounded the chassis and no more floating ground. |
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| Tom Bavis |
OK, I have good news... and more good news.
First, I'm holding the schematic in my hand - a scan will cost you an email...
Second, it actually has an isolation transformer in it (assuming it's the same as the SA-813 and 814...) so it's somewhat safe...
...and some bad news - you'll need another tube to get enough gain for a guitar - maybe add a 12AV6 or 12AU6?
tbavis(at)rochester(dot)rr(dot)com |
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