In Reply to: Admiral 6BQ5 SE Amp! posted by sober1 on November 16, 2008 at 13:43:13:
Hey Sober1,
It's not likely that the OPTs on this amp are propoerly gapped if at all. They relied on gobs of NFB and tone control back then.
A 1963 Zenith SEP 6BQ5 amp made me fall for the single ended sound. It did have a 12ax7 as a driver. I ended up strapping the 6BQ5 as triodes and totaly rebuilding the power supply by adding a choke, tube regulation and recapping. I replaced the OPTs with a pair of Lundahl 1663s. It now uses a driver with less plate resistance and higher transconductance ie. ECC88 or 6922. The amp is one of my best overall performers but I can't help thinking that SEP done right could yeild some great results. A future project maybe.
Stuben
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- RE: Admiral 6BQ5 SE Amp! - Stuben 11/16/0814:13:28 11/16/08 (0)