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OTL Asylum OTL, Output Transformerless Amplifier User Group. |
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OTL Asylum OTL, Output Transformerless Amplifier User Group. |
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In Reply to: Re: diy otl posted by Hans on October 24, 2004 at 09:48:48:
6bk7b's at the input, 6au6's & 6bl7's in driver circuit & 6as7g's at output. Many of the tubes are original from 1988, including perhaps half the outputs. Now's probably a good time to at least replace the remaining original output tubes. I'm going to rebuild the bias and offset adjustment circuits for easier accessibility, IAC, since the original potentiometers were sort of slapped in there and require disassembly to adjust (this amp was originally going to be just a prototype for a much higher powered pair of OTL monoblocks using 6lf6's, but I liked the prototype enough to stay with it, instead and eventually sold the sweep tubes to Richardson).
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Follow Ups
- Re: diy otl - Tom Dawson 23:09:43 10/24/04 (3)
- Re: diy otl - Hans 08:44:28 10/25/04 (2)
- Re: diy otl - Tom Dawson 10:24:15 10/25/04 (1)
- Re: diy otl - Hans 11:11:45 10/25/04 (0)
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