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September 24, 2020, 05:19:33 AM

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Author Topic: fender ultra chorus distortion  (Read 2907 times)


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Re: fender ultra chorus distortion
« Reply #15 on: August 21, 2020, 04:35:02 PM »
I used to rebuild Seeburg Juke Boxes.  And in the tube era, there would be two large chassis.  One was the amplifier, the other the control center.  The control center used tubes too.  A 2050 thyristor tube acting like a triac to fire a solenoid, 12AX7s amplifying pulses from the core memory, and other circuits.  Some of those tube circuits ran plates at ground and a -300v supply into the cathode circuits.


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Re: fender ultra chorus distortion
« Reply #16 on: August 25, 2020, 11:42:25 AM »
it's all moot now!

i had a FEELING i was barking up the wrong tree - joecool's early hunch was right!

after a ton of pointless tinkering, turns out C47 had come just evverrrr so slightly desoldered. argh! anyway, secured it and we are good to go - i knew it would have been something like that - whenever i find myself too deep down the 'doesnt make sense' rabbit hole, it turns out to be some mechanical nonsense -

thanks, guys!!

Glad you were able to get it going!
Life is what you make it.
Still rockin' the Dean Markley K-20X