The Schatten RB-2 Rockabilly upright bass pickup system includes two sensors, one for the bridge and another for the fingerboard, each with its own volume control. The jack assembly clamps between the D and A strings just above the tailpiece. The entire system is prewired and requires no soldering or drilling.
The main RB sensor element is designed to fit in the wing slot of a bass bridge. Normal placement of the sensor is in the bass side slot. The sensor has a nominal thickness of 0.25" (6.35mm) and requires a slot opening of approximately 0.225" (5.7). The fit of the sensor in the slot is meant to be snug as this is a pressure-sensitive pickup. The sensor will compress slightly as it is pushed into the wing slot. Bridge not included.
The second sensor element attaches to the underside of the fingerboard for that Rock-A-Billy string slap. Both sensors have a volume control so that you can individually adjust the effect of each pickup.
The RB-2 is a passive system that has enough output to drive an amplifier directly, but you can add a preamp or direct box if you need more control over the sound or a stronger signal for plugging into a mixer board or PA system.