I bought a used and abused broken Peavey Tour VB-2, which uses 6 EL34's to make 225 watts. Or would, if it worked.
It looks like the output transformer broke loose, and flew around and broke tubes etc.
So somebody welded it back on its mounting plate (while uninstalled). Which sounded crazy to me until I found out that Peavey also welds them to the same plate.
The funky output transformer it the only thing that 'looks' wrong, except the middle keyed phenolic pin is broken out of most of the EL34's (which really shouldn't matter).
I would have thought they used a laminate core not just for assembly but to prevent eddy currents in the core. Wouldn't welding across the core in multiple places be a bad thing? I'd imagine there's also a big risk of cooking off the insulation, or even melting some copper windings! Or inducing enough current to blow thin wires?
I can't imagine why someone would decide to weld a transformer core instead of just
putting a plate across the top and 4 long bolts.
It looks like the output transformer broke loose, and flew around and broke tubes etc.
So somebody welded it back on its mounting plate (while uninstalled). Which sounded crazy to me until I found out that Peavey also welds them to the same plate.
The funky output transformer it the only thing that 'looks' wrong, except the middle keyed phenolic pin is broken out of most of the EL34's (which really shouldn't matter).
I would have thought they used a laminate core not just for assembly but to prevent eddy currents in the core. Wouldn't welding across the core in multiple places be a bad thing? I'd imagine there's also a big risk of cooking off the insulation, or even melting some copper windings! Or inducing enough current to blow thin wires?
I can't imagine why someone would decide to weld a transformer core instead of just
putting a plate across the top and 4 long bolts.