Larry Taft wrote:
Try reversing the phase of the audio by swapping the output leads of the
modulation xfmr.
First I swapped the tubes to no avail. I then swapped the wires and now
have a strange buzzing that I can not locate but it shows up on the
audio with the gain at zero. Don't know if I barfed something up or not
but I vaguely remember reading somewhere that this an an indication to
reverse the leads.
Weak tube in the audio chain causing lack of gain needed for the
positive peak.
Just ordered new audio tubes.
Now I notice another discrepancy..... the manual that came with it says
to adjust the mod current to 75-90 ma. The manual that Rick sent me for
the new version which I seem to have says 55-70 and no clue why the
difference.
Which is correct and should I make an allowance for using 6L6's instead
of 1614's?
js
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