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Heavy duty 12AT7 for a reverb driver


skankdelvar
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Ghastly to bring it up on a bass forum, I know. But I keep blowing up 12AT7's in the reverb socket of an old Silverface Pro Reverb (Ed Jahns UL transformer / MV type).

Before I hoick the offending Fender off to a solder-covered gnome bloody miles away, does anyone have any recommendations for a seriously heavy duty 12AT7? That way, if it blows, I'll know it's probably a fault rather than crappy tubes.

Thanks in anticipation.

Edited by skankdelvar
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If it keeps blowing the valves then I'd recomend getting the reverb transformer checked out along with the reverb tank. There could be a breakdown in the windings causing a short that is too much of a load on the driver valve. The circuit is basically a single ended amp that drives the reverb springline and will have the same effect on the valve as a bad speaker load on an amp. Best get these checked by a tech than keep throwing valves at it.
Good luck
Cheers Just

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