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Old 28th December 2008, 08:03 AM   #1
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Default 300B valves

Just replaced the Electro Harmonix 300B's with some Sophia Electric Globe Mesh Plates and am wondering why on some start up, one or other of the valves glows like a 'Christmas Tree'. I usually switch off then back on and all is OK.
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Old 28th December 2008, 09:40 AM   #2
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Slow bias?
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Old 28th December 2008, 10:25 AM   #3
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My engineer is going to fit some new permalloy output transformers which is an upgrade to eliminate the hum. Do you think the 'Christmas Tree' problem is something that he can deal with? The 300B is a Dignity Audio Mono Block supplied by Monarchy Audio in San Francisco.
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Old 28th December 2008, 10:50 AM   #4
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Quote:
Originally posted by vinegrad
Do you think the 'Christmas Tree' problem is something that he can deal with?
You think I can answer that? But I'll say possible

Cheers!
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