Help! The volume knob on my PSW350 subwoofer has completely broken off and I can’t adjust the volume anymore. Photos can also be seen at: http://nomoon.org/misc/psw350/
This is a $2 part and should be easy to replace with a few minutes of soldering. However, Polk doesn’t sell individual parts, though they will sell me a whole new amp assembly for $200. I called customer support and spoke to a polite person who emailed me a parts list. I was hoping to find an identical part, or at least one with identical dimensions. The replacement part needs to be the same size in order to physically fit. This item (R31) is listed in the Polk factory parts list as "POT, 100KA,9mmx1". However, the part in the list doesn’t exactly match what is in my device. I appear to have a 250K ohm potentiometer. Can anyone identify this part? What does the "9mm" mean? I found a company called "Tawain (Alpha), though their only 250K ohm pc-mounted audio potentiometers were 16mm. This potentiometer is pc-mounted with three solder leads. Does anyone know what company makes this part? Should I assume that it doesn't really matter whether I use a 100K or a 250 K ohm potentiometer? Would one be better than the other? I've been looking at the online Mouser catalog for parts.
I would be grateful for anyone’s help!