User manual FISHMAN FULL CIRCLE UPRIGHT BASS PICKUP INSTALLATION GUIDE

[. . . ] Tonal adjustments (figure 3) Good Bad Figure 1 · Fishman Transducers will not be responsible for damages to the pickup or the instrument due to improperly installed wheels!Retro-fit the Full Circle to a bridge with installed wheels The pickup is "hot" on the flat face of the wheel: on the side with the non-threaded post. For good performance it is crucial that the hot side of the pickup lies absolutely flat with no gaps or voids where it contacts the bridge. If necessary, sand the wood flat where it contacts the wheel before you install bridge on the bass (figure 1). [. . . ] To accommodate the thickness of the wheel, make a parallel set of lines (line C) 3/8" (9. 5mm) above line B. Find the center of line B on the face of each leg. From these points make perpendicular lines down to the foot (D). Continue across the bottom of the foot (E). Turn the bridge sideways and make a vertical line, centered through the taper of the bridge (line F). Go back to line B and continue it across the thickness of the bridge, perpendicular to line F (both legs). Finally, center a line (G) across the bottom length of each foot. Drill the legs and cut off the feet Precision is crucial here. Use a drill press and a band saw or table saw for these procedures. Make a jig that will allow you to clamp the bridge and align your layout marks for the drill. Two pieces of ¾" Plywood or MDF fastened at 90° will do the job. You will use a countersink, a #9 (5mm) drill bit and the appropriate tap for this procedure (¼-20 or 6mm). To simplify the job, we recommend that you use a so-called "extension" tap with a long reduced diameter shank. Your drill jig should hold the bridge firmly. Line up the bridge (and shim if necessary) so that lines D and F are centered with and parallel to the drill bit. Double sided carpet tape makes an excellent temporary clamp for the bridge while you drill. 2 Drier, more focused response. Figure 3 When you mount the Full Circle "threads down, " the hot side of the pickup faces the strings. This translates to more defined articulation and attack, with a slight emphasis on the "string" sound (figure 4). Threads Down Figure 4 Threads Up If you have an "extension tap, " use it now to tap the threads to a depth of 1" (25. 4mm) into the feet. If you don't have an extension tap, wait until you cut off the feet to tap out the threads. In these cases, start the tap from the top of the foot. Before you cut off the feet, line up the "B" lines on the legs so they are parallel to the saw blade. Place the side of the bridge that faces the tailpiece down towards the table. [. . . ] Double sided carpet tape makes an excellent temporary clamp while you cut. Fit the wheels Once you have cut off the feet, fit the wheels with the bridge off of the bass. The hot side of the pickup should lay absolutely flat against the bridge, with no gaps or voids. If necessary, sand the wood flat at the contact point and/or increase the depth/diameter of hole before installing the bridge on the bass (figure 1). [. . . ]