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Messages - alessandro_gfdp

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1
insert in series with R2  a 500k pot and wire in parallel a couple red leds,move VR1 on the output.
Mid pot is not really necessary,those are boost and cut bass and treble pots,so if you want to scoop the mids just raise them above 5,mid boost under 5.

2
Amplifier Discussion / Re: Vox TB35C2 repair advice
« on: July 28, 2019, 08:22:16 AM »
I have the schematic, but before thinking about replacing a transformer I would perform some voltage measurements without tubes,that will tell me more if something is bad.

Inviato dal mio Redmi Note 5 utilizzando Tapatalk


3
Amplifier Discussion / Re: Fuse or resistor?
« on: June 18, 2019, 05:37:48 AM »
Looks like a fuse,blown

Inviato dal mio Redmi Note 5 utilizzando Tapatalk


4
Tubes and Hybrids / Re: ENGL Fireball E625 Head white noise issue
« on: June 01, 2019, 03:10:45 AM »
no,the ultra channel uses 4 stages,the clean 3.
I had the same exact problem in the same amp,from a friend.
It developes over years,its not related to new or old tubes,in fact the old tubes were pretty good.Not related to anode or cathode resistors,changed all of them
I was running out of time and ended applying a coring circuit for noise reduction,but to me that is not the best solution.
Its all in the first 4 triodes,one thing i didn't do and maybe has value is to remove any trace of glue on the flat cables and the caps,and maybe substitute the filter caps,and wash the board and sockets with isoprop alcohol.

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