Gradual Express volume pot

[DaveWell]

Hi !

My Express built volume are not gradual volume, at 1 it's already loud but clean to overdrive at is goes to 11
What can I do to get there and not loose TONE.

is this PPIMV will do the trick without TONS sucking ?

I'm not just sure about connect the shilded wire ground to the lug that go to the lug of the BIAS (10uf cap/15k and 47K lug )
Why not just go direct ti ground near the pot ?

Thanks ALL !

[Littlewyan]

PPIMV will work, but the tone won't be the same am afraid, unless you account for the loss of NFB. Also I think you might lose the Clean to Mean action with the guitar volume if you fit a PPIMV, I've not heard of anyone doing this to their Express amps and haven't properly tried it myself. Hopefully someone that has will chime in.

I personally use an attenuator with mine and it works great. There is a layout for the Airbrake attenuator in the Trainwreck section. I build a modified version of this and use it with all of my amps. It still affects the tone, but not as much in my opinion.

[DaveWell]

Ok thanks,
I think I will go for the Airbreak first.

I don't find the 588-D100K-25 on mouser... somewere can i find a good place for those parts ?

[pompeiisneaks]

This looks like the same part but maybe slightly different/new?
https://www.mouser.com/ProductDetail/Oh ... 8t1G4Dw%3D

its still 100W 25 Ohm, but has a KE at the end now?

~Phil

[M Fowler]

The dual pot pin 3 is connected to a negative DC voltage source to elevate negative voltage above any AC voltage to eliminate any noise in the PPIMV.

All the coaxial shields are connected to pin 3 to the bias circuit.

Mark

[DaveWell]

Thanks Mark,
Which one is the pin 3 of bias circuit ?