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Jack Installation
Where to locate the jack?
Metal Body Instrument
For a metal instrument with a stick that runs the length of the body into the tailblock
(ex: Dobro
®
, National
®
) we recommend that you place the jack on the treble side
lower bout. Use a center punch at the chosen location and use a sharp 3/8" (9.5 mm)
brad-point drill. For best results, use a drill press and clamp the instrument securely
to prevent the drill from wandering or distorting the shape of the hole.
Wooden Body Instrument
For most wooden instruments, locate the jack at the endblock, centered below the
tailpiece. Drill a 3/16" (4.8mm) hole and enlarge it to 15/32" (12mm) with a 15/32"
tapered reamer. Note that if the instrument has a ring ("soundwell") inside the sound
chamber , you may have to drill through it to accommodate the jack.
R e s o n a t o r G u i t a r P i c k u p
Metal Body Instrument Jack Location
Wooden Body Instrument Jack Location
Pickup Installation
Installation for Biscuit style instruments:
The pickup is held against the center of the cone with the wood screw that normally
holds the biscuit to the cone.
1. Remove the original screw from the biscuit and swap it with the longer wood
screw that is supplied with the kit.
2. Notice that the heat-shrink tubing on the end of the pickup is bent to one side. Do
not attempt to unbend it! If you do so you may damage the pickup. Position the
pickup so the bend in the heat shrink tubing faces away from the cone.
3. Place the shoulder washer into the pickup and the screw into the shoulder washer.
4. Fasten the pickup assembly to the cone/biscuit. Tighten the screw until snug, and
then another 1/8 turn tighter.
5. Reassemble the instrument.
Installation for Spider style instruments:
This installation is a little trickier than the biscuit installation. For the pickup to
operate properly it is critical that the spider and cone are pre-loaded with the correct
pressure.
1. Remove the strings and the plate that protects the cone assembly. Calibrate the
spider/cone pressure by loosening the screw that holds the cone to the spider
until the screw head no longer touches the spider frame. Tighten the screw until
the head just touches the spider, and then tighten one full turn more. The
spider/cone is now pre-loaded for optimum bass response without buzzes or
rattles.
2. If the end of the screw is long enough to accept the pickup and locknut, go on to
the next step. If it is not long enough you will need to replace it with a longer
screw and go back to step #1. We include replacements for both SAE 4-40 and
3mm screws, plus matching locknuts in the hardware kit. Choose the screw that
matches the threaded slug in the center of the cone assembly.
3. Notice that the heat-shrink tubing on the end of the pickup is bent to one side. Do
not attempt to unbend it! If you do so you may damage the pickup. Position the
pickup so the bend in the heat shrink tubing faces away from the cone.
4. Place the pickup, then the shoulder washer on the screw and start to thread the
lock nut. You must hold the head of the screw stationary (with the screwdriver)
as you tighten the locknut or you will change the crucial pre-loaded pressure on
the spider and cone. If the screw accidentally turns as you tighten the locknut,
then you must go back to step #1 and re-calibrate the cone and spider.
5. Tighten the nut until it is snug against the pickup, and then 1/8 turn tighter.
6. Re-assemble the instrument and tune to pitch. Plug the instrument into an
amplifier and slowly turn the screw counter-clockwise until you hear a strong
signal from the pickup.
Fishman Transducers 340-D Fordham Road Wilmington MA 01887 USA Phone 978-988-9199 • Fax 978-988-0770
www.fishman.com
1 - 3/8” Nut
2 - 3/8” Star Washer
3 - Guitar Body
4 - 3/8” Dress Washer
5 - 3/8” Nut
1 - 15/32” Nut
2 - 15/32” Washer
3 - 15/32” Star Washer
4 - Guitar Endblock
5 - 3/8” Dress Washer
6 - 3/8” Nut
Biscuit Bridge
Pickup
Cone
Shoulder Washer
Screw
Pickup
Shoulder Washer
Lock Nut
Cone
Machine
Scre w
Biscuit Style Instrument Pickup Installation
Spider Style Instrument Pickup Installation
®
