ac15c1 tone stack question « VOX

Member

Hi, just a quick question i want to up the Bass pot capacitor from 22n. Could someone confirm which of the 2 is which? thanks

Posted 1 year ago

sizzlingbadger

Member

I don't have a schematic in front of me but the one that goes down to ground via a fixed resistor (usually 10K) will be the "Bass" cap. Making this cap larger in value will allow lower frequencies to pass to the Bass control but I doubt you will notice much difference as they will be very low and not really audible.

What are you trying to achieve ?

Posted 1 year ago

darkstar05

Member

Thanks, yes i want a bit more bass. I'm a bit unsure still, i'd be very grateful if you could look up the schematic :-) I've heard this been done to blues juniors so thought itd be good to try. thanks again

Posted 1 year ago

sizzlingbadger

Member

To be honest you aren't going to get more bass out of this amp playing with the tone stack. The tone stack is passive and only cuts frequencies. These amps are not designed to give a lot of bass and if you try and modify the circuit for more bass you end up with a very flabby sounding amp. Changing the speaker from a greenback to a G12H or Alnico Blue can give you a deeper sound. Another option is an extension cab or an AC30.

If your trying to get tight bass / metal sounds then you need a different amp.

Posted 1 year ago

darkstar05

Member

yes, the speaker change is a good suggestion. I love voxes, I have a uk TBR as well that has more low end. I really don't want a vastly different sound, just a tad bit more.
I'm going to give it a try, I think it must be the one on the right under the bass pot.
thanks

Posted 1 year ago

darkstar05

Member

I've just heard back from vox support that say that C20 is the bass cap and C24 is the fixed middle one.
This was a surprise as i looked and it seemed to be C24 that went to ground via a fixed resistor

I wish there was a schematic out there

Posted 1 year ago