User manual FISHMAN PREFIX

[. . . ] FISHMAN PREFIXTM SERIES PREAMP INSTALLATION WARNING INSTALLATION BY A QUALIFIED PROFESSIONAL REPAIRMAN IS STRONGLY RECOMMENDED. FISHMAN TRANSDUCERS WILL NOT BE RESPONSIBLE FOR INSTRUMENTS DAMAGED DUE TO IMPROPER INSTALLATION. PLEASE NOTE: For instruments with solid wood sides (especially maple), we strongly recommend that you glue 2. 5"(63. 5mm) x . 5"(12. 7mm) plywood patches in the areas inside the guitar where the screw holes will be drilled. Doing so will prevent the area around the mounting holes from cracking or splintering and will strengthen the side of the instrument at the cutout. PARTS · (4) 7/16" self-tapping screws · Endpin jack with hardware (may be pre-soldered) · Prefix preamp · Adhesive-backed wire guide clips · Two (2) plastic backing plates · Preamp cutout template · Acoustic Matrix Pickup (may be pre-tinned) 1. [. . . ] OR B) Quick and Clean The objective of this method is to quickly drill out the endpin jack hole, with the endpin or other suitable plug in place. If the endpin is loose, remove and refasten it in the endblock with cyanoacrylate glue before starting the procedure. NOTE: We do not recommend this method for instruments with brittle ornamental veneers (for example: Abalone) around the endpin hole. Jack connections for the Prefix Stereo Blender model · Red wire to Tip (short terminal) · White wire to Ring (middle terminal) · Black wire to Switch (longest terminal) · Shield wire to Sleeve (strain relief) Black Wire to Switch White Wire to Ring 1. Apply masking tape around the endblock area to protect the instrument. Locate an X-Acto saw 1/16" (1. 6 mm) away from the body and saw off the endpin, nearly flush to the instrument. Drill a 1/8" (3. 2 mm) pilot hole through the endpin and endblock. Line up 15/32" (11. 9 mm) Spade bit in the pilot hole and begin drilling. Use steady (but not heavy) pressure, especially as the drill exits inside the guitar. To avoid damage to the instrument, let the drill come to a complete stop before removing it from the hole. Red Wire Shield to to Tip Sleeve II - Cut Out the Preamp Cavity Preliminary Warning: The Prefix preamp will only fit in guitars with a clearance of at least 2 1/4" (57. 15 mm) between the top and back braces, at the point where the preamp chassis swings inside the instrument. Soundboard Minimum 2. 250" (57. 15 mm) Clearance between Top and Back Braces Back Jack Connections for Prefix and Prefix Plus models: · Red wire to Tip (short terminal) · Black wire to Switch (longest terminal) · Shield wire to Sleeve (strain relief) · Ring is not connected (middle terminal) Black Wire to Switch Red Wire Shield to to Tip Sleeve FISHMAN PREFIXTM SERIES PREAMP INSTALLATION - CONTINUED IV - Install the Endpin Jack Follow this sequence when installing the endpin jack: 1. Strap button 1 23 4 5 6 7 Battery Compartment Pull the small tab at the top of the Prefix toward you. The body of the preamp will swing out, revealing the battery compartment. Observe the polarity marks on the battery clip and install a fresh 9V alkaline battery accordingly. 9 Volt Battery Microphone Trim Control A small circular potentiometer is located on the underside of the preamp just below the battery compartment. Use it to initially calibrate the microphone balance in relation to the pickup. Set the Blend slider to the center position and with a small slotted screwdriver, adjust the Trim Control until both the microphone and pickup levels are balanced to your taste. Fit the jack so that the larger diameter threads will sit slightly below the surface, on the outside of the endblock. After fitting the small dress washer and the dress nut over the end of the jack, insert a 3/32" (or 2 mm) Allen wrench (or suitably sized screwdriver or rod) through the cross drilled hole on the end of the jack. Tighten the dress nut with a 1/2" open end wrench while holding the jack in place with the allen wrench. Thread and hand tighten the strap button. NOTE: With the strap button in place, the end of the jack should protrude slightly, so that when a plug is inserted, it can snap securely in place. Mono/Stereo Switch A small slide switch, located on the underside of the preamp (across from the Notch control pot), lets you choose between mono and stereo operation. [. . . ] Fasten the preamp bezel using the four self-tapping screws and the two plastic backing plates. Self-Tapping Screws MONO CABLE STEREO "Y" CABLE If you wish to split the pickup and microphone signals for separate external processing (such as with a Fishman Blender TM system), move the switch to the Stereo position and use a stereo cable or a stereo "Y" cable to carry the two signals to separate destinations. In the stereo mode, the pickup goes to the tip output and the microphone sits on the ring output. Soundboard Plastic Backing Brackets To keep the wires inside the guitar from rattling, secure them with the included adhesive backed clips. Attach the wire guide clips to the sides or the kerfed lining of the instrument. FISHMAN TRANSDUCERS 340-D Fordham Road Wilmington MA 01887 USA Phone 978-988-9199 · Fax 978-988-0770 www. fishman. com 009-087-007 · Rev 3 · 1-26-04 [. . . ]