Thanks FJ, good info. Let's see if we can put some pieces together. Still want to nail down the specifics on the single volume harness.

Pix from my Persuader. Hope it helps!

Thanks FC and Martin for the photos, I can see what Mica was talking about needing a volume pot. I am beginning to understand what I have to do now.

Single volume harnesses are not in stock (meaning the ones we've made are reserved for new builds coming up), but can be ordered.

The original 2-volume Persuader would have 100K volume pots. The single volume harness uses a 10K (and all the bits on the board as well). FC is correct that you want turn down the gain on the filter pot preamp since you will be using the pan pot preamps now. Putting a little sticker over the trim control after you turn it down is a nice reminder to leave it alone in a few years.

You can keep your 2-volume setup as a spare, add a filter to it for another project, or sell/gift it to a fellow club member.

Thank you Mica, how would I go about ordering a single volume harness?

Call us at the shop or email me.

Thank You to Mica and Mary, and to all those who replied to this thread.
This arrived in the mail today, the elusive 1 volume harness!!

Hey, looka' there!


Tell us what you think about that new pan module now.

First impressions- It really opens the tonal range of the bass. Being able to pan and blend between the pickups really changes the game. The pan kinda acts like a tone control, the brighter sound of the J pickup vs the warmer tone of the P pup. Add that wonderful filter section and this thing rips!
Night and day difference.

Love a happy ending!   

That's very much my experience too. The ability to dial up the gain on that poor little J bridge pickup is priceless. It was just 'present' before I got the new preamp installed. I played that bass for two sets last weekend... and thoroughly enjoyed every note. Ten years on, two Series basses in the stable, and it's still my go-to.

Glad to hear you got this together.