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Changing pot resistance and taper ???


Bako

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Hi all , I really need your help on this one!

 

i want to change resistance of 500k part of Fender dual concentric 250AK/500AK audio potentiometer to 50K . i'm thinking of getting Fender concentric 250aK/500aK pot and Fener 50aK pot and want to swap tapers from 500k to 50k . i'm not sure if swapping tapers would change resistance too . well they are both audio taper so if taper doesn't hold resistances information on them (i'm an amateur )))) than there is no point of changing taper. do i need to change resitive strip in a pot or wiper ?? , again i never opened pot before and i only started googling on this recently so excuse if i'm not making sense.

 

i've heard that by adding resitors i can change resistance of the pot but it might also mess up taper. also finding 250/50 pot combination isn't easy .i need good functional dual 250ak/50ak pot , pls suggest what do i need to change out of 500k part of 250AK/500AK pot to make it 250AK/50AK

 

these are pots i'm looking to get!

 

Mucho Tx !

 

Concentric 250K/500K Solid Shaft Potentiometer | Controls and Switches Guitar & Bass Parts | Fender®

 

 

50K Split Shaft Potentiometer | Controls and Switches Guitar & Bass Parts | Fender®

 

specs for 250k/500k concentric pot

 

Top knob Ohms-Taper: 250K-Audio

Bottom knob Ohms-Taper: 500K-Audio

Tolerance: +/-10%

Top Shaft Diameter: 3/16".1875

Bottom Shaft Diameter: 17/64".265

Pot Diameter: 15/16".9375"

Threaded Shaft Length: 1/4".25"

Threaded Shaft Material: Brass

Threaded Shaft Diameter: 3/8".375"

Thread Pitch: 3/8-32NEF

 

 

 

specs for 50k Fener pot : Ohms-Taper: 50K-Audio

Tolerance: +/-15%

Shaft Material: Brass

Shaft Type: Split Knurled

Spline Count (Type): 24 (Fine)

Spline Height: 3/8".375"

Pot Diameter: 15/16".9375"

Threaded Shaft Material: Die-Cast

Threaded Shaft Length: 1/4".25"

Threaded Shaft Diameter: 3/8".375"

Thread Pitch: 3/8-32NEF

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Do you speak of an active battery-powered circuit, a very rare passive low-impedance (Lo-Z), or of a common high-impedance (Hi-Z) passive one? The latter would be loaded down rather badly by a 50 kOhms pot, regardless if used as volume or tone pot.

 

"Changing" the resistance of a pot to a lower one using additional external resistors will not only change the taper but also the behaviour of the entire circuit since the load will "see" a higher source resistance on the biggest part of the operating range.

 

It doesn't make sense to swap any parts in a pot. The risk of destroying the pot when attempting this is very high.

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