"Sander deWaal" wrote in message
news
(JRUBBO770) said:
I have a 1950s Stromberg Carlson PA integrated tube amp with a 2-6L6
push/pull
output. It is a three channel amp each with a Vol. control (1 meg).
With the
three Vol. controls turned all the way down, a moderate signal will still
pass
thru to the output on any channel. What is the cause of this? Also a
signal put
into any channel will bleed thru to the other channels. There are no
other
problems with the amp. Your technical help is certainly appreciated.
Please
email at: Thanks
Check the potmeters, after 50+ years they'll likely to have some
problems.
Also, check the signal ground. If necessary, rewire.
How about the caps on the bottom of the potentiometers?
If they're open, the pot won't function as an (AC) voltage divider.