I'm thinking serialnumber12 may have hit it on the head... Are you running through the power supply or running off the 1/4 inch jack? Other than a friend trying to lower the neck pick-up for ease of slapping on a 70's Series I and having it break in the middle, I'm not aware of the failure of any Alembic pick-up.
Plugging in a 1/4 inch cable on an older Series bass will render the bridge pick-up inoperable...
(Message edited by musashi on June 09, 2009)