Another JS2480 Sustainiac quirk - Jemsite
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post #1 of 20 (permalink) Old 01-22-2019, 04:48 PM Thread Starter
 
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Another JS2480 Sustainiac quirk

Finally found a JS2480 that cosmetically good, third time lucky. This one seems to have an issue with the Sustainic circuit, the 3 way toggle switch doesn't operate as I'd expect.

1. Switch forward - sustain driver
2. Switch middle - does nothing
3. Switch to rear - harmonic driver

So the middle position does effectively nothing, its supposed to mix the sustain and harmonic modes. I really don't want to return this one for exchange or repair if its something I can repair or adjust myself myself.

Any other JS2480 owners seem a similar problem and been able to sort it themselves?
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post #2 of 20 (permalink) Old 01-22-2019, 05:10 PM
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Re: Another JS2480 Sustainiac quirk

The middle should turn your low notes into harmonics after a few seconds, doesn't do much if anything for high notes.
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post #3 of 20 (permalink) Old 01-22-2019, 05:11 PM
 
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It should be easy to fix, there should be a capacitor for mix mode, check the wiring to the back of the switch and compare with sustainiacs website instructions.
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post #4 of 20 (permalink) Old 01-22-2019, 05:18 PM Thread Starter
 
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Re: Another JS2480 Sustainiac quirk

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Originally Posted by sepulchrave View Post
It should be easy to fix, there should be a capacitor for mix mode, check the wiring to the back of the switch and compare with sustainiacs website instructions.
Soldering all looks good so I've multi-metered the switch terminals for continuity test and will submit the result to sustainic support.

Will update with progress.
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post #5 of 20 (permalink) Old 01-22-2019, 05:23 PM
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Re: Another JS2480 Sustainiac quirk

I have one and I feel the mix mode, sometimes does a slower onset of feedback and in a lower harmonic than harmonic mode, but in some places it does nothing. When it does result in feedback it's a little more natural sounding than harmonic mode.
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post #6 of 20 (permalink) Old 01-22-2019, 05:32 PM
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Re: Another JS2480 Sustainiac quirk

There is nothing for mix

http://www.ibanezrules.com/catalogs/...iac_Layout.pdf
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post #7 of 20 (permalink) Old 01-22-2019, 05:42 PM Thread Starter
 
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Re: Another JS2480 Sustainiac quirk

Found this, there is a section on "no mix mode" http://www.sustainiac.com/troubleshoot.pdf

Capacitor is an electrolytic and no sign of it being shorted out by solder, its only shorted out when the toggle switch is in the forward and back positions, but not the middle, as its supposed to (I guess!). I'll await the response from Sustainiac.
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post #8 of 20 (permalink) Old 01-22-2019, 05:46 PM
 
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Quote:
Originally Posted by Rich View Post
10-pin connector, brown wire.
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post #9 of 20 (permalink) Old 01-22-2019, 06:09 PM
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Re: Another JS2480 Sustainiac quirk

Quote:
Originally Posted by sepulchrave View Post
10-pin connector, brown wire.
Meaning there is no adjustment for the mix mode.
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post #10 of 20 (permalink) Old 01-22-2019, 07:21 PM
 
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Quote:
Originally Posted by Rich View Post
Quote:
Originally Posted by sepulchrave View Post
10-pin connector, brown wire.
Meaning there is no adjustment for the mix mode.
Only the capacitor value which is bleeding some of the harmonic away, pretty useless really, the old system I have is a two position toggle, so you can only choose one mode.
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post #11 of 20 (permalink) Old 01-23-2019, 11:08 AM Thread Starter
 
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Re: Another JS2480 Sustainiac quirk

Just had this reply from Alan at Sustainiac support, and interestingly my bridge pickup does seem very low (only just proud of the pickup ring), so there is some adjustment to do...............

"In the middle position (Mix mode) the sustainer output signal goes through the 22uF capacitor. If the cap is shorted, you will simply get Normal mode in that position. It is possible that the cap is open. If so, you can tack-solder another to the original capís terminals. If that makes it work, then you can replace the cap.

Mix mode is the weakest of the 3 modes. It could be that your bridge pickup and also the Sustainiac driver are set way to far from the strings. Both should be set to approximately 1/16 inch from the little e-string, and 1/8 to 3/16 inch from the big E.


Alan Hoover
Maniac Music Inc."
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post #12 of 20 (permalink) Old 01-24-2019, 06:27 PM Thread Starter
 
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Re: Another JS2480 Sustainiac quirk

It was the bridge pickup height! Just too low for the mix mode to work.

What do you guys think of the neck pickup on the JS2480? Its certainly not got the pure magic of the Paf Joe, anyone prefer it over the SatchTrack? Sadly I sold my JS2410 so can't compare.
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post #13 of 20 (permalink) Old 01-24-2019, 06:28 PM
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Re: Another JS2480 Sustainiac quirk

It's a fine pickup but it's not anything as good as the satch track or the PAF Joe in my opinion.
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post #14 of 20 (permalink) Old 01-27-2019, 02:30 PM
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Re: Another JS2480 Sustainiac quirk

That's good info, but with the pickup set so high that has to limit pullup range on the bridge?
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post #15 of 20 (permalink) Old 01-27-2019, 02:45 PM Thread Starter
 
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Re: Another JS2480 Sustainiac quirk

It just clears but does feel way too close now, need to adjust it down a bit and see at which point the 'mix' position stops working. Got to admit I'm growing less fond of the neck pickup, not as articulate, verging on muddy/lacking definition. I guess every 2480 owner really also needs a 2450!
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