Power valve bias.

Silver Jubilee amps, 2555x 2558, 2550, 2553, 2555, 2525H, 2525C

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markr
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Power valve bias.

Postby markr » 07 Oct 2016, 04:50

I was planning on changing the valves in my 2525h including the power valves. Does anyone know if this amp needs a re bias afterwards. I've looking inside and can't see the bias trim pot anywhere. So I can only assume the amp is cathode biased.

I've never been a fan of stock Marshall valves.

Cheers

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sikter
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Re: Power valve bias.

Postby sikter » 07 Oct 2016, 17:38

It's correct! Fixed voltage, cathode biased
:dunno

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