Vintage Ibanez inductor EQ need help choosing the right pots.

[Vyvyan]

Hi I'm building a clone of this 70s Ibanez EQ it calls for G20k pots (originally fader with center detent)

I have plenty of center detent G50k pots but no 20k.

Can I use the 50k pot without any poof effects on the circuit?

Any recommendations on tweaking the circuit to better accommodate 50k pots?

Thanks!

 

[Script]

Lin pots, I guess.

If 5 X 50k Lin in circuit, I'd probably expect a change in overall gain (R14), maybe also changes on the LC filters... Yet, I'd say try.

Bourns have 20KB at Mouser. Not sure about centre detent though.

And some old Behringer units (MDX2000, I think) use 20KB with many detents.

 

[dai h.]

couple places (U.S., Europe, Japan) sell 20k'W' (I understand this to be the same half audio/half reverse audio as 'G') for Tube Screamer tone control replacements :

https://smallbear-electronics.mybigcommerce.com/alpha-single-gang-16mm-solder-lug/

https://www.musikding.de/Alpha-pot-angled-pc-mount-20k-W

https://www.banzaimusic.com/ibanez-8vrc3003.html

https://www.sakurayadenkiten.com/eshopdo/refer/vidalphapot001_A13-16.html

(my novice understanding) is that if you use a linear where you ideally want to use a G/W, you have good control near zero but once you move higher (or lower) beyond a certain point (where it should curve and slow the change of resistance with rotation) you won't have as good a control over the change. I also recall reading from someone (on the Gearwhatever forum) who was apparently involved with development of an API graphic EQ that some of them used a slide pot with more sections, so some G/W tapers may be better than others (as with audio pots that have more sections on the resistive track besides the minimum of two).