another newbie question about volume pot

[mikechang]

Hi All:

if the volume control is originally implemented by a 100k pot and put at the end of circuit output node (serve as a voltage divider right??)
what's gonna happen if i change this pot to a 10k??
is it gonna be like guitar volume pot that gives more/less treble response??

im only asking cause my parts barely got shipped..... which means i'll have to wait for at least 4 more days to get it probably.....
and all i have is a 10k pot to replace the original 100k pot......

thanks

[db]

It depends on the circuit driving the pot.

If the pot is being directly driven by an op-amp or emitter-follower i.e. a low impedance source, then 10K instead of 100K will probably work fine.  If anything, you should get less treble loss with the 10K pot as you turn down the volume.

If the pot is being driven by some other passive circuit network e.g. a tone stack or a transistor stage which happens to have a significant output impedance, then loading it with the 10K pot could have a major effect on output level (at max volume setting) and/or frequency response.

The simple way forward here is to try it.  You won't do any damage.

[petemoore]

if the volume control is originally implemented by a 100k pot and put at the end of circuit output node (serve as a voltage divider right??)
what's gonna happen if i change this pot to a 10k??
is it gonna be like guitar volume pot that gives more/less treble response??
  It's still going to be a divider.
  Measure the 100k across the outside lugs...~100k...the outside lugs are between signal path and ground, a shunt. Put a 10k there and the resistance path to ground lets more signal get shunted. because resistors find it slightly easier to pass HF, a bit more HF than LF's will probably get shunted to ground with a 10k, making it sound ..less high endy than a 100k. It does matter what is driving the volume pot...what value you'll prefer there...100k should be louder, shunting less signal to ground across lugs 1 and 3.
  im only asking cause my parts barely got shipped..... which means i'll have to wait for at least 4 more days to get it probably.....
and all i have is a 10k pot to replace the original 100k pot...
  Try 'em out !
  take a 100k pot, wire it as VC, then put a 12k [should equal about 10k] across the outside lugs and hear the difference the ground shunt resistor [pot wafer] value makes.