Onboard acoustic guitar system, Preamp functions – Fishman Guitar User Manual
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ONBOARD ACOUSTIC GUITAR SYSTEM
3
PREAMP FUNCTIONS
BATTERY COMPARTMENT
Pull the small tab at the top of the PREFIX PLUS™ toward you. The body of the preamp
will swing out, revealing the BATTERY COMPARTMENT. Insert a fresh 9V alkaline battery.
ENDPIN JACK
The PREFIX PLUS™ has no ON/OFF switch. It is turned on only when an instrument
cable is plugged into the endpin jack. To conserve the battery, remove the instrument
cable from the endpin jack when the unit is not being used.
NOTE: Plug an instrument cable into the endpin jack
before
you plug into the sound
equipment. Doing so will prevent loudspeaker damage.
BATTERY LOW INDICATOR
When plugging into the endpin jack, the LOW BATTERY light will flash momentarily, indi-
cating that the power is on. When the LOW BATTERY light stays on, it is time to change
the battery.
CONTROLS
NOTCH FILTER
This is a fixed level, variable-frequency filter for eliminating feedback or unwanted reso-
nance. The affected frequency is variable from 40 to 500 Hz. The NOTCH FILTER is
effectively off in the full counter-clockwise position.