Noob's first build !!!!

[firechief]

bereanbill
The last poster nailed it pretty well, you can fix that hum.! and congrats, lots of fun. Is it loud enough

[bereanbill]

I'll try the artificial centertap to the cathode...that is referenced to ground anyway....And Firechief...thanks again, man. You helped me with a breakthrough I've been chasing for a couple of months now. Yeah, it's loud enough for what it is...but is it ever REALLY loud enough? I think my next project ir going to be a JTM45 clone...already have the trannies and chassis. To be continued.....

[Rob11966]

Hi Bereanbill,

I have built one of these and it hums as well. None of my other amps do.

I put it down to the power caps. They are simply undersized for the job.

I haven't got a schematic at hand for the Deluxe c but the 'd' (which is the one that I built) only uses 16uF caps.

Don't all guitar amps hum?

Cheers,

Rob

[bereanbill]

Yeah, I think all Fenders are under-filtered. I always bump the plates and screens up...double most times...but preamps may change the tone, so I don't usually change those. I used 22u in this guy..wanted to go bigger but the board was only so wide. I think mine is the PT being too close to th outputs. I'll move that first and then try the filaments.
And I guess when you change a circut as much as I did this one, you run that gamble...but no, not all amps hum. I just got a little Lindell amp...voltage dividing circut, 50C5, 12AU6, 35W4...it hummed so badly that no signal came thru. I recapped it using a mish-mosh of stuff I had around, doubled the plate filters, bumped the screens, and it is DEAD quiet. So I guess with a higher gain circut, you have more risk of hum...more gain=more hum???
"But the frustration of failure is always eclipsed by the thrill of sucess"...I said that !!!