For this again I would check by replacement the Cathode bypass
electrolytic on the audio output tube. That cap is there to place the
cathode at signal ground so the entire input signal is impressed upon
the grid-cathode circuit. any audio signal that exists on the cathode,
because of a loss of capacity/increased reactance, is effectively
producing negative feedback--reducing the gain of the amp.
Curt
KU8L
Joe Loverti wrote:
I have a 13-tube, R-4A receiver that is an excellent performer and fun
radio to use – except for one issue: the audio output seems to be a
bit low: Is it normal to have the volume control at nearly 1 o'clock
for normal, comfortable listening? Other Drake and non-Drake receivers
seem to have a comfortable audio level about 9 o'clock. Is there a way
to boost this receiver's audio output or is there something obvious to
check? Any suggestions always appreciated. Thanks in advance and happy
holidays to all the Drake list folks.
WW8X
Joe Loverti Sr.
Miamisburg, Ohio
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