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Mark D. Zacharias Mark D. Zacharias is offline
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Default Potentiometer of Technics 323 tuner amplifier

And while you're at it, lose the "top-posting" nonsense. No one elected you
sheriff of this one-horse town.

Mark Z.


Simoc wrote:
Hi!

I got Technics 323 tuner amp, which is lacking a volume pot. It has
balance adjustment on the same knob, too. The knob came with it, it
has a "head" and "sleeve" which both have the same radius, and have no
space between them.

So might the balance adjustment be done so that the "head" just
adjusts one channel and the sleeve the other, and thus their ratio
could be adjusted, and when the volume is adjusted, both of them (ie.
the entire knob) are turned same amount?

What might be the name of the pot of such kind (a stereo pot having
the both channels separately adjustable?)

Then there is one more problem. There is a 5-wire ribbon cable for
connection of the pot...what might be the pinout? Or if anyone doesn't
know, how could I analyze it with a scope maybe? It just cannot be
easily done by analyzing the circuit, since the mainboard is very
complex and has a lot of stuff above it, and the device hasn't a
detachable bottom, so disassembling for analyzing the circuit would be
quite an infernal job...: