Anybody have a schematic for a PPIMV mod?

[JDJ]

I'd like to consider adding it to my Bassman. Thanks :)

[soldersucker]

This one's very popular and would drop right in an Bassman.
http://metroamp.com/wiki/index.php/Lar/Mar_PPI-MV

[TweeDLX]

I'd like to consider adding it to my Bassman. Thanks :)
I looked at the schematic for the Matchless Spitfire and copied it for my Princeton. It works pretty well, but I need to adjust the taper some more. I'm thinking that 2.2M resistor might help. I ran a wire from the intersection of the PI (.1 uf) coupling caps and the 220K resistors (one on each side). One went to the wiper of a 250K linear taper pot, and the other to either one of the remaining lugs. Nothing fancy, but effective for getting some grit at a low volume, and easy to install.

Mike

[xk49w]

Check the schematic of a Vox Night Train (http://www.prowessamplifiers.com/schematics/Vox/Vox_Night_Train-5.75_Watts_Triode_13_Watts_Pentode..html).

[HipKitty]

This one's very popular and would drop right in an Bassman.
http://metroamp.com/wiki/index.php/Lar/Mar_PPI-MV


This should work just fine. Make sure that you can ground one end of the shield and leave the other side of the shield unattached and shrink-wrap it to prevent any possible problems.

[hasserl]

This one's very popular and would drop right in an Bassman.
http://metroamp.com/wiki/index.php/Lar/Mar_PPI-MV

That's not a schematic, it's a wiring diagram.

Isn't that just the KF MV with 2M2 resistors added for bias safety?

http://www.thegearpage.net/board/showthread.php?t=260111