- Sep 30, 2011
- Reaction score
Where's the sound bits?
If you want more gain on the Amber, then yes, A300k will get you there. Bourns make them: drop in replacement, along with the B250k. Another trick would be a switchable resistor in // with the gain pots for a low gain option which might help dialing in precise break up. But I didn't find it necessary, there is good control as is.Hey Again! Merry Christmas! I'm starting with your "merged alt mod. One question about pots. You suggest replacing Crunch Gain pot with a A300K, is that important? would like to stick to the same pcb mounded if possible. The B250K(lead/Crunch VR3) is available in the right form factor and going to be changed. I'm just a few final steps from stitching this Frankenstein lady up again and start recording.
Glad to hear you are enjoying the drivesHappy new year! Tinkering with the amp again. Did a lot of your suggested mods except the peakers /saving that for later if needed. Did the mod on the clean channel with the relocated insert. I have been having problem with hum on the clean channel and bleed(sound even when gain and volume set to zero on the clean channel). The hum was associated with the volume not the gain pot.
The problems were present even befor the mod but now it’s worse with really low output and hum(turning up volume just introduce hum) . The crunch and the lead sounds glorious really love the amp now. Any thoughts were I would start trouble shooting? I’ve looked at the clean board and followed the connection from the clean volume pot through the OD board to the main board. Preamp tubes all new all electrolytics are new, volume pot changed.