Guitar Gear Forum

Good Evening - I have a Fender Super 60 which I purchased from a private sale. It works and sounds great except the bass adjustment knob spins without restriction in both directions and I note no change in sound when doing so. I can only presume the entire Pot requires replacement. With this in mind, I contacted both a Amp parts store as well as Fender directly. Here is a summary response from both,

"The pot you are looking for is Fender part number 002 8576 000 and unfortunately Fender has discontinued carrying that part many years ago and they are very tough to find. It's a 250K with a special 20% 10% log taper."

I'm still kinda a beginner at guitar, let alone anything to do with the amp beyond simple adjustments. Can someone assist me in selecting the correct replacement? Then I'll try to find someone local to help me perform the surgery, so to speak.

Thank you and Good Night ~ Keith

Did you make sure the set screw on the knob is tight?

Some pots have push on knobs, others use a set screw.

Also, you can just get an audio (log) taper 250k pot, without the the special taper and it will work just fine.

Any place that sells guitar/amp parts pretty much.

yeah - you just want an audio taper, not a linear taper pot.

Yup - as long as they sell parts.

You could order it online from All-Parts or many other places also.

There are full-size pots (better) and mini pots (cheaper) too.

Bigger is better in this case - smaller is cheaper.
Although you may want to match what is in there - if it is board (PCB) mounted pot - you will need that specific type and size to be have an easy switch.

If it is connected with flying leads (wires) - then you probably have a bit more leeway.

There are also 'feel' differences between brands of pots - Bourns are one of the best - nice smooth feel when turning them.
CTS is a good all-around easily found brand.

yeah - the more I answered/thought about it - the more variables there were.

PCB mounted pots are a different animal than a pot you would put in a hand-wired guitar or amp.

Take/post a picture of the inside of the amp - pot in question.

Usually, you have to take the entire chassis (stamped metal enclosure that the pots/jacks are mounted to) out of the cabinet.

Normally held in be 4 bolts.

OK. I'll press on.

AtypicalOne wrote:OK. I'll press on.

Do you have any experience with electronics? Cause the voltages held inside the amp can be lethal, even if unplugged.

No, no I don't. Aborting mission. Now what?

Good decision. It's tricky soldering on PCBs sometimes and too much heat can destroy the traces.