potentiometers

[Fleece3]

Can someone tell me what is the difference between a 25k and a 250k potentiometers? And are they interchangeable?
Thanks

 

[C Stone]

The lower the pot value the higher the bleed off will be from your signal, the higher value pot will allow more highs through, I am no electronics expert whatsoever but I think that is the gist…

I have an active bass that uses 25k pots I think is has to do with the output impedance but after the preamp, most active basses use 25k pots am I right?

 

[Lo-E]

The electrical answer is this: a pot is a variable resistor. A 250K pot has 10 times more electrical resistance than a 25K pot.
The bass-related answer is: As C Stone said, 25K pots are typically used with active circuits and 250K pots are typically used with passive circuits.

They are not interchangeable.

 

[Fleece3]

Make sense since I need to replace a volume pot on a TonePump preamp. Next question, who is a good source for 25k pots?

 

[LoveThatBass]

The lower the pot value the higher the bleed off will be from your signal, the higher value pot will allow more highs through, I am no electronics expert whatsoever but I think that is the gist…

I have an active bass that uses 25k pots I think is has to do with the output impedance but after the preamp, most active basses use 25k pots am I right?

If you put a low rated pot directly to the pickups it will load it severely and like the previous post stated it will make the pickup darker sounding.
However the 25K pots are likely linear taper (25KB) and connect directly to the pre-amp and do not load an amp as they are inputs not outputs, but used to control it.

 

[LoveThatBass]

Amplified Parts
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Other places are EBay, allparts.com, Stewmac, Amazon sells them.

 

[Fleece3]

This is exactly what I am looking for. Someone has it on Ebay, but they are is Australia.

Genuine USA EMG A25K 25K Short Shaft Pot for Active Guitar Humbucker Pickup | eBay

 

[Fleece3]

Found it n Best Bass Gear! Thanks