Thoughts on Marshall bright caps?

[randalp3000]

Just finished a low watt JMP type amp with the .005 bright cap on the volume control. This seams a bit high to me. https://tubeamparchive.com/viewtopic.ph ... 745#333745

Do any yous guys have favorite values for the bright channel?

thanks
randalp

[JoeCon]

Randal

One of the resident plexi/Page master builders here sent me this...
“For the Page tones one of the tricks is having that 5000pF bright cap over the Bright channel volume. “

So if it's the Page tone you're going for, you got it!

[M Fowler]

Here's were you need a capacitor substitution box to try out different caps.

I'm inclined to say no more then 500pf.

I've seen it from 100pf, 500pf, .002, and .005?

[norburybrook]

In my JTM 45, 500 was too bright for me too, I ended up with 100 if I remember correctly.



Marcus

[randalp3000]

thanks for the reply's guys.

the .005 bypasses soo much it's hard to control and mix the 2 volumes. I like how it sounds but it's very hard to dial it in. I may monkey around with it some more when I get home.

BTW this amp rips ass

[Reeltarded]

The 5kp is the awesomes on a straight circuit though.

The 500 only makes it sizzle more. The 5k makes it go! As you can imagine it's nearly full volume before 50% rotation though.

I think I have mostly 4k7p and 2k2p on my amps. Much smaller on the cascaded ones gain controls. 100/250/500..

[Roe]

The way to go, IMHO, is to use a push-pull pot for switchable 100pf/5nf. This works well on all the plexi circuits and all volume settings

[M Fowler]

The way to go, IMHO, is to use a push-pull pot for switchable 100pf/5nf. This works well on all the plexi circuits and all volume settings

I was just about to suggest this Roe and would be the best solution.

[randalp3000]

that's a great idea. I was hoping to avoid any switches but I might have to throw one in.
so far keeping it stock at .005 for this weekend.

[M Fowler]

that's a great idea. I was hoping to avoid any switches but I might have to throw one in.
so far keeping it stock at .005 for this weekend.

Use a 1MA push pull CTS pot for your switching.

[Reeltarded]

That is worth doing.

[jelle]

.005 for kick ass marshall rippin' tones.

[beasleybodyshop]

i used the push pull pot in my last build. Worth it! gives you options without drilling holes.

i dont like the torque of the pp pots though, but worth the tradeoff!