01-30-2015, 10:00 PM
I have modified one v4b to have a different phase inverter. Basically I used the same setup the SVT uses, which adds another gain stage between the phase splitter and power tube grids...
I used the unused 9pin tube socket on the eq/reverb board for the extra tube.
The end result was a much smoother transition to distortion, it sounded a little more like the SVT, whilst still maintaining its own sound.
This is actually very similar to what Ampeg did with the new v4b.
I can ask my customer to bring the amp back in so I can take some pictures if you want to see.
I used the unused 9pin tube socket on the eq/reverb board for the extra tube.
The end result was a much smoother transition to distortion, it sounded a little more like the SVT, whilst still maintaining its own sound.
This is actually very similar to what Ampeg did with the new v4b.
I can ask my customer to bring the amp back in so I can take some pictures if you want to see.