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Re: not Marshalls

Postby ef37a » Sat Sep 05, 2020 10:00 pm

Hewesy wrote:Interesting, I have a HT Drive which I've never bonded too (better with the 12AT7) but I can see that now.

Hmm...

Hewesy

Be careful! The 12AT7 will pull more current than a 12AX7 and the load resistors in the pedal are necessarily wee, well up to the job but not much more. FFS do NOT put a 12a U 7 in there! (aka ECC82).

Actually I am quite impressed that you changed the valve. Did you have the PCBs out or fiddle it from the top? BTW you really don't need to re fit the spring retainer, BIG fiddle unless you plan to roll the pedal around the floor of a Transit!

Dave.
ef37a
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