The latter position offers moreĪll of the power circuit gets upgraded to 1W resistors, using metal oxides where appropriate, for a much more reliable quiet power supply throughout.
Vox ac30cc2 transformer install#
I increase the gain in the Normal channel (Vox limits this in the stock CC) and I install a switch that toggles the TB channel gain between high ('65 and earlier) and low ('67 and later).
Then I change the circuit in both channels to JMI spec, using high quality low noise resistors and Sozo coupling caps. On any CC, I remove/change the bright caps on the TB and Normal channels, to eliminate the ice pick attack.
Vox ac30cc2 transformer mods#
On CCs that already have the speaker and reverb jacks, the mods above are not needed, including the effects loop and trem fixes.
Vox ac30cc2 transformer mod#
On those older CCs I also fix the effects loop so there is no low-end loss and mod the trem circuit so the trem goes both faster and slower without thumping (Change R38 From 56K To 27K Change R37 From 270K To 100K). When I install a new cable with a plug I then solder the cable to the speakers for a permanently reliable connection. This way you can change tubes without having to remove and disconnect the reverb tank, and without having to remove the clip on speaker connectors, which wear out when you remove/connect them a lot. On older CCs that have the speaker and reverb wires hard-wired to the chassis I install a 1/4" jack for the speakers and RCA jacks for the reverb. I change the preamp filtering and install a DC standoff circuit (which lowers any AC hum in the filament Betwen the clips he has posted and the very satisfied customers he has modded amps for it's pretty obvious that he knows what he is doing and that the CC amps are a diamond in the rough, not unlike the Peavey classic 30. If I wasn't I wouldn't hesitate to send the amp to Lyle for the mods. I am handy with a soldering iron so if I did own a CC I would have definitely tried these mods myself. He has talked about both the AC30CC and AC15CC and there is every possibility that I have mixed up notes on the two. Please note that this is a somewhat scrambled collection of notes so please take it with a grain of salt.
Below are comments that he has made on the CC's. I do not own one and have not modded one but there is a fellow named Lyle Caldwell who frequents the "U2 recording" yahoo group who has done a few (at least) for other members of the group.
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