Thunderchief mods question

[powerplayj]

1.  Where to find a 250uf cap...that's not electolytic, not surface mount and doesn't cost $8.00....  I'm trying to find one to make the input on my Thunderchief switchable.  I've tried Small Bear and Mouser with no luck.

2. Variac mod........what value pot would be a good start to choke down the voltage such that the FET collectors get ~2 volts?

Thanks,

Jason

[powerplayj]

anyone???

[Bucksears]

I think I heard somewhere that someone broke down a tiny piece of perfboard and soldered a 220uF, a 22uF and a 10uF all in parallel and used that.
That'll give you 252uF (or just leave out the 10uF and go for 242). I think I just tried 220uF just to hear the difference, but that was so long ago I don't remember how it was. I gave up the Thunderchief, but I was trying to plug a Marshall eq into the mix without extra juice/amp stage so I'm going to try the Thunderchief 2(??) that officially includes the tonestack (on paper) but hasn't been officially tested.
- Buck

[powerplayj]

Would it matter that the 220Uf was an electrolytic?  I can't find any other kind of caps at a value that high.

[Bucksears]

Electrolytic should be fine as long as it's polarized correctly. (negative toward ground, IIRC)