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FDP Forum / Guitar Mods, Repairs, and Projects / anyone familiar with Seymour Duncan's Lightning Rods bass pickups ?

hotblooze

World Traveler

Wood, magnetic coil and strings.
Mar 25th, 2017 10:30 AM   Edit   Profile   Print Topic   Search Topic

A set of J-bass pickups were passed to me to change out the stock pickups in a Squier J-bass. Do I need to change the pots to a lower ohm like 100k since that are active or just use back the original pots ? If I need to change the pots, do I use linear or audio tapered ones ?

Cal-Woody

USA/California

Why do I keep fixing things that work?
Mar 25th, 2017 05:45 PM   Edit   Profile   Print Topic   Search Topic

If the pickups are passive with an active preamp, then just change the pickups.
If they are active pickups, it will require a whole new setup for the pickups. It would a 10k or 25k pots and a small capacitor, which alludes me right now, but a schematic is available online. If it is using a blender pot with the pickups, it would have to be changed also.
Most of the Fender style basses use an active preamp and will probably just be a pickup swap.
It will be interesting to see how they work out for you.
Best regards, Woody

hotblooze

World Traveler

Wood, magnetic coil and strings.
Mar 26th, 2017 08:34 AM   Edit   Profile   Print Topic   Search Topic

Thanks Woody.

Steve Dallman
Contributing Member
**********

Merrill, Wisconsin

Age is just a number...mine is big
Mar 26th, 2017 10:11 AM   Edit   Profile   Print Topic   Search Topic

Not 10k or 25k. Duncan uses 100k for their active pickups. I had active Duncans (the P and J pickups with the dip switches on the face) that I used for years. 100k worked better than the 25k I had for some EMG's.

hotblooze

World Traveler

Wood, magnetic coil and strings.
Mar 26th, 2017 01:25 PM   Edit   Profile   Print Topic   Search Topic

Steve, I think you're correct. I checked online and apparently SD supplies the pots, output jack socket and battery clip as well. However, the pickups I have on hand are taken out from another guitar and sold cheap on ebay without the accessories. Guess, I will have to source some 100k pots. The jack socket and battery clip, I have.

Cal-Woody

USA/California

Why do I keep fixing things that work?
Mar 26th, 2017 06:16 PM   Edit   Profile   Print Topic   Search Topic

I went online to check the wiring schematic diagram and sure enough, they use 100k pots through out the whole wiring scheme and a .05mf cap, plus the ground wire from the bridge. I'm only slightly familiar with the EMG pickups I have, which uses the 25k pots and No Ground. So, sorry for my laziness in not checking further!
On another note, Steve, you mentioned that you had used 100k pots with EMG'S, were these only on the humbucker types or the active single coil pups like the Dave Gilmour series? If it was the humbucker types, 81/85's like I have in my Schecter, would the 100k pots make them really bright, as I'm getting a fairly bright edge with the 25k pots, or is this more optimally done with bass guitar only for a better punch and clarity?
My Thanks in advance, Woody

FDP Forum / Guitar Mods, Repairs, and Projects / anyone familiar with Seymour Duncan's Lightning Rods bass pickups ?




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