|[AMRadio] Ranger Audio... the numbers|
jack at schmidling.com
Fri Nov 17 12:44:09 EST 2006
Gary Schafer wrote:
> It's beginning to sound like a partially shorted mod transformer.
I checked the resistances of the transformer earlier in the game and
they are nominal.
>With 20 volts signal on the grids of the mod tubes I would think that
>you should see at least 200 volts on the plates??
I have no idea but if mine is off by a factor of 4, would it work at all?
> Could be bad 6L6's.
Or back to a reason for using 1614's perhaps?
> Can you easily get high modulator plate current with audio applied? Will the
> mod plate meter peg or nearly so if you hit it hard?
>If it will that is an
> indication that the tubes are good and the transformer may be shorted.
Except that the transformer appears to be ok.
To refresh.. we are talking about a max of about 75% modulation on
peaks but no problem over modulating at the base line.
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