valutazioni - 3, GPA: 3.7
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If you have any questions or problems, contact our PRODUCT INFORMATION LINE at 978-988-9665. The Fishman AGP-2 and ABGP preamps are specifically designed for use with piezoelectric pickups. Since piezoelectric pickups require specific electrical environments, the AGP-2 / ABGP feature discrete input stages that maximize the full potential of the pickup. Both units provide active gain control and fully buffered shelving style active boost and cut for BASS and TREBLE. The center frequencies of these controls have been selected for their relationship with acoustic instruments. The width of the bass and treble separation effectively provides a midrange control; boosting the bass and treble controls simultaneously will provide an effective midrange cut or vice-versa. The Preamp housing is made of rugged aluminum and weighs only seven ounces. For maximum portability and user convenience, it is equipped with a heavy duty stainless steel belt clip. NOTE: If you have purchased the AGP-2 Preamp Kit that includes the Fishman AG-125 Acoustic Guitar Transducer, be sure to see the enclosed separate instructions to guide you in proper installation of the transducer. The AGP-2 is designed specifically for acoustic string instruments including guitars, violins, violas, cellos and mandolins. The ABGP offers the same features as its general purpose counterpart, but has specially selected frequencies specifically chosen for the acoustic bass and the Fishman BP-100 Bass Transducer. INSTALLATION 1. LOCATION Determine the best location for the Preamp on your instrument. We recommend the upper bout adjacent to the neck, or in the waist area. Avoid any location that may interfere with neck block, braces or linings. 2 ONBOARD ACOUSTIC GUITAR PREAMP ONBOARD ACOUSTIC GUITAR PREAMP WARNING INSTALLATION BY A QUALIFIED PROFESSIONAL REPAIRMAN IS STRONGLY RECOMMENDED.FISHMAN TRANSDUCERS WILL NOT BE RESPONSIBLE FOR ANY DAMAGES TOYOUR INSTRUMENT DUE TO IMPROPER INSTALLATION. 2. TEMPLATE A drilling template is provided for drilling the control shaft holes. Cut out the template outline. Check that it fits between the upper and lower linings when held inside the guitar at the chosen location. Tape the template at the location on the outside of the guitar. With a sharp scribe, pierce the template at the marks. Remove the template. This should provide you with two drilling centers marked on the side of the guitar. These centers will be 1.250 inch (31.8mm) apart. At each center, drill a .375 inch (9.5mm) hole through the side of the guitar. We recommend using a sharp 3/8 inch spur bit for this operation. FIG. 1 3. SPACER BLOCK We strongly advise that a wooden spacer block (see Figure 1) be used to add strength to the mounting area of the guitar and to more evenly distribute the load of the preamp. We do not recommend using a hex nut and lock washer as the inside bearing surface to accommodate the thickness of the inside of your instrument because this could result in possible damage to the instrument itself 4. PREPARING THE SPACER Using the drilling template as a guide, make a rectangular wooden spacer that is 2.00 inch x .750 inch x T (50.8mm x 19.0mm x T). T is the measurement derived from the protruding bushing length minus the outside hardware thickness (Figure 1) To derive T, insert the control shafts through the 3 AGP-2 / ABGP AGP-2 / ABGP holes from the inside of the guitar. Next, measure the length of the threaded bushing that protrudes out from the side of the instrument. From this measurement, subtract the thickness of the outside hardware (hex nut and finish washer). FIG. 2 5. WIRING THE TRANSDUCER Remove the cover from the AGP-2 Preamp. Locate the terminal block with two sections to be used to connect the transducer leads (see Figure 2). Thread the transducer wire through the rubber grommet where the wire harness enters the preamp. Strip and tin the signal and ground wires from the transducer and connect them to the terminal block as shown in Figure 2. Check for shorts. Replace the cover and screws (SEE NEXT SECTION), being careful to engage the grommet in the appropriate slot. 6. MOUNTING THE BATTERY HOLDER The AGP-2 is supplied with a battery holder that can be attached to the preamp cover with the screws provided (see Figure 3), or be attached to the neck block (see Section 6a). Be sure to check and adjust the fit of the battery in the holder before installing the AGP-2 Preamp inside the instrument. 6a. OPTIONAL BATTERY HOLDER MOUNT Cut a block of 1/4” plywood approximately 1-1/2” x 2-1/2” (40mm x 65mm). Using two Number 4 pan-head sheet metal screws (1/4" length), attach the battery holder to the wooden block. The assembly can then be attached to the neck block with wood glue, double sided tape, or Velcro. 4 ONBOARD ACOUSTIC GUITAR PREAMP ONBOARD ACOUSTIC GUITAR PREAMP IMPORTANT Although the supplied battery holder should provide adequate capacity to grip the battery at all times, we strongly recommend removal of the battery when sh...
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