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blew up the gemini

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blew up the gemini
Hangman Offline
Senior Member
Posts: 316
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Joined: Mar 2013
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#10
06-07-2017, 06:59 AM
it should be 470 ohm, at least 2 watts.
Adding screen resistors will just help with the stability of the amplifier. without screen resistors the power tubes have a tendency to start oscillating at really high (out of the range of hearing) frequencies. The screen resistors help to eliminate that problem, at the cost of about 1-2 watts of output at full power (not noticeable)

take a picture of the guts of the amp and I will point out which ones are for the vibrato.
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Messages In This Thread
blew up the gemini - by Fred Rocker - 05-24-2017, 09:22 AM
RE: blew up the gemini - by Fred Rocker - 05-24-2017, 04:08 PM
RE: blew up the gemini - by Fred Rocker - 05-24-2017, 06:14 PM
RE: blew up the gemini - by Hangman - 05-25-2017, 04:54 PM
RE: blew up the gemini - by Fred Rocker - 05-28-2017, 10:50 AM
RE: blew up the gemini - by Hangman - 05-30-2017, 09:08 PM
RE: blew up the gemini - by Fred Rocker - 06-01-2017, 09:22 AM
RE: blew up the gemini - by Hangman - 06-01-2017, 08:55 PM
RE: blew up the gemini - by Fred Rocker - 06-05-2017, 05:25 PM
RE: blew up the gemini - by Hangman - 06-07-2017, 06:59 AM
RE: blew up the gemini - by Fred Rocker - 06-07-2017, 05:19 PM

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