JMJM, JM Ultra, JM TVL Jazzmaster Pickup Cross Swap

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JMJM, JM Ultra, JM TVL what's best harness/pickup combination

Poll ended at Fri Nov 10, 2023 11:36 am

Ultra harness + PV65 pickups in Ultra JM
0
No votes
TVL harness + PV65 Pickups in Ultra JM
1
20%
TVL harness + Noiseless Pickups in Ultra JM
0
No votes
Leave Ultra JM as is and install TVL harness + PV65 in JMJM
3
60%
Leave all JMs as is and sell TVL loaded pickguard
1
20%
 
Total votes: 5

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Emil_Kodar
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JMJM, JM Ultra, JM TVL Jazzmaster Pickup Cross Swap

Post by Emil_Kodar » Mon Nov 06, 2023 11:36 am

Hi all,
At now I have

a 2020 Jazzmaster Ultra
a 2023 Jazzmaster JMascis
a complete JM TVL loaded pickguard (harness w PV65 pickups)

your opinion about a combined pickups swapping

Thanks in advance
Last edited by Emil_Kodar on Thu Nov 09, 2023 8:28 am, edited 1 time in total.

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Mechanical Birds
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Re: Jazzmaster Pickup Swap

Post by Mechanical Birds » Mon Nov 06, 2023 11:07 pm

I Feel like the Ultra’s whole point is it’s electronics, right? So I’d say if anything put it on the JMJM and leave the Ultra alone

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Re: Jazzmaster Pickup Swap

Post by Emil_Kodar » Tue Nov 07, 2023 12:46 am

I'm curious about trying the Noiseless with traditional wiring (500k pots). I don't use serial/parallel mode, preferring the usual Lead/Rhythm switch.
Obviously in Ultra body and neck.
Has anyone ever done this?

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Re: JMJM, JM Ultra, JM TVL Jazzmaster Pickup Cross Swap

Post by Emil_Kodar » Fri Nov 10, 2023 11:12 pm

Thanks for suggestions.

TVL original harness has two shielding copper plates soldered as ground under pickups.
Image

So you must have the correct routing, with a contoured side and a straight side
JM Ultra is routed for two regular JM covers, with two contoured side per each.
JMJM is routed perfect for TVL harness (same CNC schema?), then I decided to swap JMJM pickguard, shield the body cavity with copper tape and install TVL harness + PV65 on Squier.

A good improvement.

bye

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Re: JMJM, JM Ultra, JM TVL Jazzmaster Pickup Cross Swap

Post by Emil_Kodar » Sun Mar 03, 2024 11:50 am

At now, I've sold the JMJM.
With some works, the TVL harness and the PV65 couple -in a cream pickguard- are in the Ultra. A sort of UltraVintage.

Pros:
Vintage sound
Modern usabilility
two complete preloaded pickguard, the Ultra Original and the "Vintage", just a 5 minutes swap

Cons:
Less versatile (ok for me)

Mods:
Some works to adapt an American Professional II compatible pickguard
New pickups spacer foam
Complete grounding with copper tape
Modified shape in bridge copper plate
Replaced TVL toggle switch with a regular JM slide switch

Perfect combination of two world, but not really an upgrade, now it's not better than original Ultra, just Vintage voiced

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