Hello Alembic fanatics and Craftsmen/Craftswomen,
I just received my first Alembic, an Orion guitar with lightly figured Mahogany body, Maple accent and Vermillion top. I am very happy with the quality and the playability. It upstages my Dean Z Time Capsule, which I hold in higher esteem than PRS, Gibson, etc. Unfortunately, I have run into some noise issues. It hums and picks up radio, most prominently 89.1MHz, and unfortunately renders the guitar into a beautiful acoustic. It's got a good battery, good cables, amp works ok, etc. I live near alot of radio antennas but my passive guitars don't have nearly as much noise.
The noise is very noticeable on clean amp settings and as loud as the pickup signal with high gain settings. Increasing the volume or preamp gain brings the noise up also.
I played around with the ferrite bead and noticed that the noise decreases as it is moved away from the volume pot assembly. I also zip tied the pickup cables to it in an attempt to maximize its effects (proximity). I checked out the grounding, well, the obvious grounding, and noticed that the pickup shields do not have continuity to the output jack housing as I expected them to have (differential amp?). I found that with the pickup connectors removed from the selector switch the resistance from the selector switch output sheild to the jack body was 4k7 ohms.
Could this be a pickup grounding issue?
Has anyone run into similar problems? Any help would be greatly appreciated.
Clint
(Message edited by triodecr on June 06, 2003)