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Volume pot issue
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Breaker:
Hi all,

I also used this technique to extend the volume control on my CAB and the only caution I would add is to route the wiring
away from your control panel wiring. I don't know if my situation was unique, but I ended up with a high pitched whine in my
speakers after extending the volume control. It took me a long time to realize it, but I had run my volume control wires in the
same wiring conduit as my control panel wires, and it was causing the whine. I assumed it was interference from the control
panel wires because once I moved the speaker wires to the other side of the CAB all was good.

Breaker.
mh12:
thanks guys.
i took daoldman's advice and got another pot the same as the one attached to a board in my cab, and soldered it up, in-line. found a little knob for it too. while i was at it i picked up a splitter and a short headphone extension cable to make a headphone port (so speakers and headphones can be on at the same time... or just turn down the volume pot to make it headphones only).

i put the volume knob where the coin mech door lock was, and the headphone extension (as well as 2 USB extensions that i use for pads for 4 player games sometimes) are all sitting in the P1 coin return (only the second slot has an actual coin mech). as soon as i find a glue that will properly bind these things to my candy cab, i'll put up some shots (it's looking pretty crap right now). i like setting it up this way since when it comes to the control panel and up, there's nothing to distinguish it from a cab in an arcade..... and it keeps me from having to drill anything for a volume knob  ;D
Bender:
Old thread but good info...

I read that ideally  the pot goes between the output source and the amp
can you but a pot between the amp and the speakers?
Zebidee:
Not recommended. The pot will work much better between source & amp

A pot between amp & speakers is not good practice - it would need to be higher rated for the more powerful signal. You'd be 'wasting' a lot more power (ie power used in amplification), as you'd be shunting much of it to ground. Also, you'd probably get 'impedance' interference as the amplifier expects a certiain level of impedence from the speakers - typically just 4/8/16 ohms, a lot less than the 10,000 ohms or more that you would find in even a small pot.
BobA:
+1 for Zebidee  Not recommended. The pot will work much better between source & amp
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