Quote:
Originally Posted by old_coot88
Have you verified that the H efficiency coil is intact? That's the very first thing I'd check on any Zenith of that vintage. Even before the CRT.
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I have a parts chassis and a couple spare forms (one of which is spoken for for a convergence coil in another set) so I should be able to deal with it if bad... I'll check on it eventually.
Quote:
Originally Posted by Rythm
Trying to figure out how to use this site yet
But are you sure about the power Ratings of a P-P 6BQ5 of this set ?
I think more like 12-13 Watts per channel would be correct I would think
nice set BTW
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The spec I quoted was from a Zenith service manual image Davgoodlin posted. Its not impossible Zenith overstated it, but it's also not impossible to achieve it in class AB. The max plate dissapation power in the 6BQ5 datasheet is 12W. Theoretically if you ran the tubes at the max plate dissapation and class AB biased to the ragged edge of going into class B you could get almost 24W out of a Push Pull 6BQ5 amp. At an amplifier calibration presentation at one of the last ARCI radiofest meets at the old Holliday Inn venue the presenter stated 20WPC as being about the max a HiFi PP 6BQ5 amp could do.