brite cap type

[Andy Le Blanc]

I was tweaking on a high gain thing this morning.
Now I usually lean toward silver mica's, but this thing seemed to like
a ceramic, .001 like a traynor, I was surprised.

So ... silver mica, ceramic, styrene, polypropylene, polyester, metallized, film oil/foil...

Whats your poison?

[ChrisM]

Been using ceramic on the last few of my personal builds. Don't find them as shrill, yet still have clarity. Silver Mica have their spots but not the bright cap for me.

[David Root]

Ceramic on brite cap in D-type amps.

For a super smooth brite cap try a polystyrene. They are not as peaky as ceramics, and some D-types find them BOR-ing because of that, but it's all a matter of taste. Not an official Dumble tone in that position though.

[Andy Le Blanc]

Funny thing, I think I can dig up a poly, first amp in a while where the brite
on a gain pot seemed so critical for tone. There's a SM in the tone and later
on as a bypass/bleed around the master, they dont seem as critical.
I understand the complaint about a super smooth tone, the flipside is how
ceramics can be rough and grainy.

I did some work on a traynor a while back, with its treble/bass that most hate.
Something happened in the gain/tone structure with that cap value as a brite.
The lead tone was good, you had to dial it in, but the amp would do it.

This build is leaning towards that jtm/jubilee marshal-ism ... lead/metal
The brite cap is on the first gain pot, that "driven" tone.

[gary sanders]

Ceramic on brite cap in D-type amps.

For a super smooth brite cap try a polystyrene. They are not as peaky as ceramics, and some D-types find them BOR-ing because of that, but it's all a matter of taste. Not an official Dumble tone in that position though.

I have a switchable bright for 100pf polystyrene or 200 pf ceramic in my ODS.The polysyrene sounds great.Wish I had more to expirament with in other positions on the board