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OTL Asylum OTL, Output Transformerless Amplifier User Group. |
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I recently bought a set of 1940's vintage Sylvania VT-231's, They were from a reliable seller and tested great by him. One of the matched pairs failed from the start in my M60 (latest version) and a second pair failed after about one hour. The output from the amp was very low and distorted.Sent them back and they re-tested perfectly and work fine in a test amp (not an Atmasphere). The seller mentioned that these older VT-231's are only rated up to around 300 plate volts and the M60's may be running higher than that.
Anyone have a similar experience?
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Topic - VT-231 voltage? - paul 08:24:38 06/16/01 (8)
- Re: VT-231 voltage? - Sylvania JAN-CHS 6SN7W - Jan Hass 09:01:59 06/16/01 (4)
- Bypassing electrolytics - Lew 14:55:32 06/20/01 (3)
- Re: Bypassing electrolytics - thanks Lew ! (nt) - Jan Hass 03:54:05 06/21/01 (2)
- Re: Bypassing electrolytics - Paul Speltz 11:25:20 06/21/01 (1)
- Re: Bypassing electrolytics - Lew 10:16:37 06/22/01 (0)
- Re: VT-231 voltage? - David M. 08:39:43 06/16/01 (2)
- Re: VT-231 voltage? Clarification - David M. 09:03:06 06/16/01 (1)
- Input tube function/positions? - paul 10:30:58 06/16/01 (0)
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