JS volume/tone controls - Jemsite
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post #1 of 7 (permalink) Old 02-17-2020, 11:26 AM Thread Starter
 
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JS volume/tone controls

The more I use my JS1200 the more I like the vol/tone/3-way w/coil split and treble bleed setup... So I have this old Ibanez project guitar that I am finishing up in H-S pickup config and would like to set up the controls like the JS. Does anyone have the info on the type of push pull pots used on the JS's? I searched online a bit yesterday and didn't get anything conclusive. Are they just std 500k pots w/dpdt switches, audio taper for volume, linear for tone?


I found the right capacitor values I think.


Thanks for any help or insight!
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post #2 of 7 (permalink) Old 02-17-2020, 01:11 PM
 
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The pots I use are bourns 500k. They feel great. They are of the same configuration as the ones used in the js guitars. I personally think they feel better because they have a nice even feeling resistance. I replaced all my js guitars pots with these because I just love how they sound and feel. They don't click really hard and make a lot of noise when using the push pull. It's smooth and quiet when enabling the push pull feature.

Bourns 1X 500K Short Split Shaft Audio Taper Push/Pull Potentiometer https://www.amazon.com/dp/B00QPTUOYW..._vGSsEb3BDX1RD

The capacitor value is 330pF for volume and .022uF for the tone POT. If you Google image search "js1200 wiring" you can easily find the official Ibanez wiring diagram.
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post #3 of 7 (permalink) Old 02-17-2020, 02:09 PM
 
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Re: JS volume/tone controls

Contact Rich. His RG1020IR has a similar set up.
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post #4 of 7 (permalink) Old 02-17-2020, 04:15 PM Thread Starter
 
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Re: JS volume/tone controls

Quote:
Originally Posted by JsXLine6 View Post
The pots I use are bourns 500k. They feel great. They are of the same configuration as the ones used in the js guitars. I personally think they feel better because they have a nice even feeling resistance. I replaced all my js guitars pots with these because I just love how they sound and feel. They don't click really hard and make a lot of noise when using the push pull. It's smooth and quiet when enabling the push pull feature.

Bourns 1X 500K Short Split Shaft Audio Taper Push/Pull Potentiometer https://www.amazon.com/dp/B00QPTUOYW..._vGSsEb3BDX1RD

The capacitor value is 330pF for volume and .022uF for the tone POT. If you Google image search "js1200 wiring" you can easily find the official Ibanez wiring diagram.

Thanks for the info, nice to hear from someone who uses them as opposed to looking up specs online. You use audio taper pots for both tone and volume? I don't know why, but it seems like the tone pot might work better as a linear taper. I have another guitar I put together years ago that plays well, but the tone pot is like an on/off switch and I wondered if it was from using an audio taper pot on it.
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post #5 of 7 (permalink) Old 02-17-2020, 04:19 PM Thread Starter
 
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Re: JS volume/tone controls

Quote:
Originally Posted by metalhead52 View Post
Contact Rich. His RG1020IR has a similar set up.

Thanks... will do. I was looking up parts on his website last night, but the shafts on his JS push/pull pots were smooth and not splined. I have the original '86 knobs I'm trying to make work if possible and they need a split/splined shaft. I may end up using knurled JS type knobs if I have any trouble, but I think my JS knobs are splined too?
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post #6 of 7 (permalink) Old 02-17-2020, 04:27 PM
 
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The tone pot cap doesn't work the same as the other one because of where it is soldered to the pot. Every tone pot has a capacitor to bleed off the highs, otherwise it would just turn the volume down. Volume and tone pots are identically the same. What makes the utilization different is the capacitor location.

Though these pots do have a larger diameter threaded shaft, so you would have to enlarge the holes. If that makes you turn away from using them I don't blame you. Some people do not like the idea of putting a drill to a guitar for any reason what so ever.

And the pots I removed from my js guitars did not have splined shafts on the tips, they had a plastic tip on the end of the pot shaft.
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Last edited by JsXLine6; 02-17-2020 at 11:14 PM.
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post #7 of 7 (permalink) Old 02-19-2020, 07:24 PM
 
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I totally misunderstood your comment about the linear pot. I honestly didn't know there was a difference. It seems to work fine though. I don't notice a difference. But I looked up the difference and apparently it's just how quickly it tapers off.
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