Post Type Archives: Faqs

The Invader (SH-8) is not available as a trembucker because it really doesn’t need to be. It has very large hex screw pole pieces which surround the strings adequately with their magnetic fields.

We stopped making the switch pickups (“Active EQ”) in the mid-’90s. We replaced them with the Pro-Active series. The little rocker switches on the Active EQ pickups change the sound. Switch #1 shifts the coil resonance. On a Jazz Bass neck pickup and a P Bass pickup, the resonance moves downward from 22 KHz to…

The 84-50 was American made and of a higher quality. Circuit wise, the two amps are nearly identical, but there were some differences in the voicing. Even the various versions of the 84-40 were voiced differently. None of the differences were anything major. The 84-50 had a different driver stage that was lower in gain,…

We stopped manufacturing amps decades ago, and consequently we have various documents and few parts relating the amps. Unfortunately, we do not have every owner’s manual, schematic or amp part anymore. We have pdfs of some manuals here. You’ll need Acrobat Reader and it’s a free download from Adobe. Alternatively, we will provide you with faxed or posted copies…

Sorry, we no longer manufacture amps. There are a lot of used amps out there (and even a few new ones). We see used ones advertised all the time.

We had a limited run of 35 guitars to celebrate our 35th anniversary but we no longer have any available. Previously ESP Japan had produced a special line of Seymour Duncan guitars that are no longer in production. You can sometimes still find a 35th guitar for sale.

The best place to locate used modules is on the Seymour Duncan forum where you will see some be listed from time to time. Keep an eye on The Trading Post.

We produce a Rickenbucker in the Seymour Duncan Custom Shop in both a vintage and hot version. We also do rewinding and repair. If you’re interested, please contact our Custom Shop at 805-964-9610 between 8 am – 5 pm (Pacific) Monday – Friday.

One type of Trembucker that we made famous is our patented Parallel Axis design [see]. Here, four pole pieces per string insure that all the vibrations are captured for greater tonal range and dynamics. Because they’re Trembuckers, they’re designed for the 2.070″ or 52.6mm spacing. All Parallel Axis bridge pickups are Trembuckers. But not all Trembuckers…

Hum canceling: Yes DC Resistance: 8.65k Magnets: Alnico 5 bar Resonant Peak: 6.62khz 4-conductor wiring