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Old 04-12-2008, 05:53 PM   #1
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Marshall valvestate 8080 how to get more reverb

Hi all:

I've just bought a secon hand valvestate 8080.
It sounds "great" but the reverb was very low comparing to my 8280 valvestate.

I changed three resistors in the reverb section and put in the following:
R90 and R91: 1M ohm, R92: 100K Ohm.
This helped get better/more reverb effect.
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Old 04-12-2008, 06:02 PM   #2
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Rather than modifying the circuit, did you consider repairing the existing circuit? perhaps you had a weak drive.
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Old 04-18-2008, 06:13 PM   #3
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I changed both op amps before and after the reverb tank. It didn't help. I didn't take much time checking the signal i have to say, since i already had these two op amps lying around. tl072 and rc4558. i took a chance But the reverb signal was weak anyhow. Maybe the 5201 didn't switch properly, i don't know, but i'm pleased with the result as it turned out.
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