>
>In a message dated 3/2/99 10:13:54 PM Eastern Standard Time, km1h@juno.com
>writes:
>
><< >
> >I have changed tubes between three different amps and three different
> >sets of 3-500Z's and it happens with all tubes. I am sure the problem
> >is in the amp. In addition, I have checked the shunt resistors in the
> >grid circuit, and they all check good.
>
> What shunt resistors?? In an un -voodooed TL-922 there are no resistors,
> just a pair of grid chokes plus 220pf caps per pin.
? Carl - Trio-Kenwood's schematic diagram for the TL-922 shows a
resistor from each grid to ground in parallel with the choke, and that's
no joke. .
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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