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Vintage Asylum Classic gear from yesteryear; vintage audio standing the test of time. |
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Vintage Asylum Classic gear from yesteryear; vintage audio standing the test of time. |
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In Reply to: Scott 299B Output tubes glowing Red posted by onekid on May 6, 2016 at 08:43:48:
Check the bias supply and the associated circuitry.
Also, the 7189A pins out differently than the 7189. Check how the sockets are set up. The 299B schematic shows 7189s, not 7189As.
Save money in the future. The Russian 6p14p-ev, AKA EL84M, is an affordable, tough, and good sounding true 7189 equivalent. Leave the very costly NOS to "audiophools".
Eli D.
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Follow Ups
- RE: Scott 299B Output tubes glowing Red - Eli Duttman 10:06:02 05/06/16 (7)
- Eli, you happen - Oface 11:04:37 05/09/16 (1)
- RE: Eli, you happen - Jim McShane 15:29:28 05/09/16 (0)
- RE: Scott 299B Output tubes glowing Red - onekid 18:31:14 05/06/16 (3)
- RE: Scott 299B Output tubes glowing Red - DaveV 20:31:15 05/06/16 (2)
- I did it right and rebuilt the 299B with individual - gkargreen 17:42:08 05/10/16 (0)
- RE: Scott 299B Output tubes glowing Red - onekid 09:32:37 05/07/16 (0)
- RE: Scott 299B Output tubes glowing Red - onekid 14:31:38 05/06/16 (0)
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