[sdiy] best resistor types for HV tube supplies and screen supply voltages for 6V6

[anthony]

I have a lot of different types of 1 & 2 watt resistors to use in a tube amp 
power supply: some metal film "flameproof" ones and some Big & fat carbon 
comp types. I'm leaning towards the big fat carbon comps because they look 
neat & I think they're actually more like 3 watt units and I remember 
something about them being good for tube amp supplies.

I decided, after much searching on the web, to do a pretty faithful clone of 
the Fender Vibrochamp. If there's any negative feedback, I'll probably leave 
that out, since single-ended 6V6's have a lot of character when they break 
up. I may add another gain stage using the 6AV6 that was the original preamp 
in the radio that I'm using to make this amp.

I've noticed among different designs of amps there is a bit of variation of 
the screen voltage: sometimes there's a 1kOhm resistor between the plate 
supply and the screen supply and other times there's as much as 10kOhm 
there. What gives? I'm guessing the 6V6 isn't picky about it's screen 
voltage. Does running it closer to the plate voltage make it more triode-y?

And I think having tremolo instead of reverb in this amp is just a good 
idea.

This post may seem not to be so much to do with SDIY, but I think I may 
actually end up using this amp for one of my monosynths after I get an 
Epiphone valve junior or 2 to have a stereo rig for my guitar. (The idea of 
getting 2 Valve Junior heads and making a 2X12 cab for them to sit atop is 
very appealing to me.



cheers,
aa