Tube Amp Archive

Just connected to the ground bus.

That was my first diagnostic. so I checked for any contact between core and shield: non visible, none according to my ohmmeter, and I even went as far as changing the wire and cutting a new one, checking it for contact core/shield, soldering it... same phenomenon.

weird weird weird.

I did some further mods: changed the OT using a champ one to fit the SE design, replace all signal-carrying wires by shielded, and checked and checked again all connections. I even turn around the tubes with spare one to make sure it wasn't the cause. Also relocated the tubes to the far end opposite...

Thanks a lot Mark. I try that tonight.

Hi Tubelectron, Some help would be appreciated. I cannibalized an old Peavy and made everything fit. I added a choke. Lots of real estate taken from the bottom of the chassis indeed. Problem is... No sound at all. I haven't checked the voltages, but I suspect I messed up the opt wiring. Instead of t...