I want to change the pot on my amplifier with one from Alps. The problems is the only Alps pot that matches the dimensions and resistance has a slotted shaft and my amp has a pot with a flattened shaft. Is there a way to adapt a slotted shaft so the knob for the flattened shaft can fit without a problem?
Why ?
Graham
You can drill out the center of the knob to mak it round, then build up the slotted shaft with epoxy until the knob fits properly.
**If the pot on the OP's amplifier is a standard carbon type, the Alps 'Blue Velvet' is likely to make a small, but significant, improvement. The lower noise and laser trimmed matching improves on cheap pots significantly.
Can you email me please?
-- Trevor Wilson www.rageaudio.com.au
On Wed, 20 May 2009 15:14:30 -0700 (PDT), Vasil put finger to keyboard and composed:
Drill the original knob and insert a plastic bush salvaged from another suitable knob ???
- Franc Zabkar
-- Please remove one \'i\' from my address when replying by email.
If the shafts in question are the same diameter, you can easily mill, grind, or file a flat onto the slotted shaft.
Assuming the diameter is OK, put a shim into the slot, then (with the shaft in a vise) file the flat (so it makes a T with the slot).
Depends which Alps model you choose. Just saying "Alps" is no guarantee of a superlative part. Some of them are IMHO WORSE than Taiwan Alpha who 'second source' most of the popular Alps parts at a lower price. We had negligible problems EVER with Taiwan Alpha.
Now, if you want laser trimmed conductive plastic, that's another matter.
Willco.
Graham
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