mike_lawyer
Member
- Joined
- Sep 2, 2019
- Messages
- 32
- Reaction score
- 5
Was your 20 watt Plexi build based on EL34s or 6v6s? Curious how you were able to reduce the wattage. At low volume settings with a PPIMV, do you hear a difference?I suppose a PPIMV is good if you want to get a little more preamp overdrive effect. I installed one in my 20 watt plexi build. Most of the time it is all the way up as I use the amp as a clean and pedal platform at this time. But, if I wanted some crispy bacon grease, I could turn the PPIVM down and crank the input volumes, or use a drive pedal for that response. My PPIMV is very well behaved but it needs to be installed well. I used a PEC dual ganged pot for better tracking and wiper action, plus, applied the -50volt bias voltage onto the shields of the board-to-pot connecting wires for an extra level of noise reduction. I spent 3-4 hours just on the wiring of the pot to make sure everything was done to the best standards I could muster. And it is a very well behaved and transparent addition to the amp. I'd say it doesn't hurt to have it even if I never used it.
Best,
Phil D
I know George Metropolous prefers a pre-phase inverter master because of the change in NFB with a PPIMV.