MATRIX INFINITY
PREAMP INSTALLATION GUIDE
www.fishman.com
Read Me First!
Installation of this product is a straightforward procedure, but we recommend this job only if you are an experienced repair technician.
Requirements
Saddle Slot:
Minimum saddle slot length: 2.775” (70.48mm) Maximum E to E string spacing at saddle: 2.5” (63.5mm)
Wide Format Width: .125” (3.17mm)
Narrow Format Width: .094” (2.39mm)
Preliminary
1. Widen the endpin hole to 15⁄32” (11.9mm) to accommodate the endpin jack.
2. Drill a 3⁄32” hole (2.4mm) in the saddle slot for the pickup wire, no less than .100” (2.5mm) from nearest string.
Standard Installation
For nylon string instruments or installation without the control module, refer to the Installation Options below prior to mounting the Volume & Tone controls.
1. Test the area where you will mount the Volume & Tone control module. Locate the module flush with the edge of the soundhole, on the bass side, between the transverse brace and the bass-side x-brace (figure 1).
2. Remove any lacquer and/or buffing compound from the inside edge of the soundhole. Clean this surface with an alcohol wipe or a cotton swab moistened with rubbing alcohol. Let dry.
Note: For the strongest bond we recommend that you now apply a water-based primer/sealer to the bare wood inside the soundhole. Let the primer/ sealer dry before continuing.
3.Peel back the release film on the bottom of the preamp module and fasten the preamp to the underside of the soundhole. Apply even, steady pressure to the module to set the adhesive. The adhesive gains maximum hold after 24 hours.
4.Install the pickup per Acoustic Matrix Installation Instructions.
5.Open the preamp body by unscrewing the single screw on the side opposite the Matrix Infinty logo. Flip the preamp over so the circuit board remains in the plastic housing (figure 2).
6.Fasten the pickup wires to the terminal block on the preamp module. The signal wire goes to the terminal marked “IN” and the shield wire goes to the
“GND” terminal. Tighten the screws on the terminal block to secure the wires.
7. Replace the preamp’s back cover being sure the wires do not get pinched by any plastic parts. The housing should easily fasten tightly when the screw is replaced.
8. Secure the wires inside the instrument with the supplied adhesive-backed clips (figure 1). Clean the bare wood surface where you will fasten the clips. Use an alcohol wipe or a cotton swab moistened with rubbing alcohol.
Figure 1.
Figure 2.
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