Fishman prefix acoustic guitar system 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™ preamp toward you.
The body of the preamp will swing out, revealing the BATTERY COM-
PARTMENT. Insert a fresh 9V alkaline battery.
ENDPIN JACK 
The PREFIX™ has no ON/OFF switch. It is turned on only when an
instrument cable is plugged into the endpin jack. To conserve the bat-
tery, 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 LED
When plugging into the endpin jack, the LOW BATTERY light will flash
momentarily, indicating that the power is on. When the LOW BATTERY
light stays on, it is time to change the batter y.