PT-20 Presence Knob?

[speccy]

Hey I have a PT-20 amp and understand that it has a fixed value for the presence. I'm hoping that its an easy mod to add a knob in its place. Anybody know how/where to do this?

Can PM photos if necessary.

 

[RACKSYSTEMS]

there is no presence circuit. Might have talked with you via email

 

[CornNutz]

Hey I have a PT-20 amp and understand that it has a fixed value for the presence. I'm hoping that its an easy mod to add a knob in its place. Anybody know how/where to do this?

Can PM photos if necessary.

As Dave said.

Plus your amp has no negative feedback, you'd need a major overhaul of the power section.

 

[cardinal]

Could add a Vox type cut control if you're wanting to make it darker?

 

[raybarbeemusic]

I have one with presence control but you have to add nfb for it to work obviously.

Mine is heavily modded (clean channel, dual footswitchable gains/masters, footswitchable loop, separate 3 way Rk and Ck switches for 9 settings instead of 3 structure, amount of Ck bypass controllable with foot controller in wah housing)