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Hi all,
I have a couple different issues.
1. After I replaced the can caps with F+T's the tone lost it's body and the distortion had a high end grainyness instead of the regular smoothness.
2. Not sure how long this has been happening but at low volumes if the mids are all the way down and you strike a chord hard you can hear a large amount of compression cutout and then the sustain returns at normal volume. (like having a compression pedal set high)
There is one mod to the amp, a Rich-mod PPIV that I've had for a year or so. The amp has sounded great with it up until now.
Channel two sounds better than channel one but probably because there is more bass making up for the lack of body in the tone.
After the cap job I adjusted the bias again. I also tested preamp tube voltages but could not find a schematic that listed them-
V1A- 160
V1B- 220
V2A- 171.8
V2B- 294.7
V3A- 231.6
V3B- 211
I have a couple different issues.
1. After I replaced the can caps with F+T's the tone lost it's body and the distortion had a high end grainyness instead of the regular smoothness.
2. Not sure how long this has been happening but at low volumes if the mids are all the way down and you strike a chord hard you can hear a large amount of compression cutout and then the sustain returns at normal volume. (like having a compression pedal set high)
There is one mod to the amp, a Rich-mod PPIV that I've had for a year or so. The amp has sounded great with it up until now.
Channel two sounds better than channel one but probably because there is more bass making up for the lack of body in the tone.
After the cap job I adjusted the bias again. I also tested preamp tube voltages but could not find a schematic that listed them-
V1A- 160
V1B- 220
V2A- 171.8
V2B- 294.7
V3A- 231.6
V3B- 211
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