Fender Fishman-Prefix-Plus Operation Manual

USER’S GUIDE

FISHMAN PREFIX™ PLUS

This fine instrument is equipped with a FISHMAN PREFIX PLUS™
ACOUSTIC GUITAR SYSTEM. Please read these instructions care­fully. If you have any questions or problems, please call our CUS-
TOMER SERVICE LINE at [phone].

The PREFIX PLUS™ is an instrument-mounted pickup / preamp sys­tem that offers total control of your amplified guitar sound.

THE PICKUP

The PREFIX PLUS™ ACOUSTIC GUITAR SYSTEM includes the FISH­MAN ACOUSTIC MATRIX pickup; made with a unique co- polymer
sensing material available exclusively from Fishman. This technology
is not available from any other manufacturer. The sensing mater ial
exhibits a sensitivity and dynamic range that far surpasses all other
known sensing materials. The ACOUSTIC MATRIX transducer is a fully
EMI shielded, multi-layer sandwich of co-polymer strips that run the
length of the pickup. This design allows the pickup to sense the motion
of the entire saddle length, providing superb string to string balance,
as well as sensitivity to both the strings and top of the instrument.

THE PREAMP

The PREFIX PLUS™ preamp module incorporates a unique "flip-top"
battery compartment for easy access. A variable NOTCH filter, shelv­ing BASS & TREBLE , semi-parametric CONTOUR, and BRILLIANCE
controls are included for precise tone shaping and fighting feedback.
There is also a PHASE reversal switch and a low battery indicator.

The PREFIX PLUS™ can be plugged into any instrument-level audio
input with excellent results.

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ONBOARD ACOUSTIC GUITAR SYSTEM

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 batter y.

ENDPIN JACK

The PREFIX PLUS™ has no ON/OFF switch. It is turned on only when an instr ument
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, indi­cating that the power is on. When the LOW BATTERY light stays on, it is time to change
the battery.

NOTCH FILTER

CONTROLS

This is a fixed level, variable-frequency filter for eliminating feedback or unwanted reso­nance. The affected frequency is variable from 40 to 500 Hz. The NOTCH FILTER is
effectively off in the full counter-clockwise position.

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FISHMAN PREFIX™ PLUS

VOLUME CONTROL

Controls the overall gain of the PREFIX PLUS™. Goes from very quiet to very loud.

BASS CONTROL

This is a boost/cut shelving tone control. The center detent yields a flat response.

CONTOUR

This is a Wide-range semi-parametric filter. It is used to selectively shape the instru­ment's tone.

The CONTOUR Level slider controls the amount of boost or cut applied to the selected
Contour FREQUENCY. The center detent yields a flat response.

The Contour FREQUENCY slider determines the frequency band that is boosted or cut
by the CONTOUR LEVEL control. The frequency is variable from 250 to 10 kHz.

TREBLE CONTROL

This is a boost/cut shelving tone control. The center detent yields a flat response.

BRILLIANCE CONTROL

This is a resonant style boost/cut filter. When boosted, the BRILLIANCE control can add
presence to your sound or brighten up dead strings.

PHASE SWITCH

The PHASE switch compensates for acoustic phase differences that often occur between
instrument and speaker. It can be used as a tone filter at low volume levels or a feedback
filter at high levels. The PHASE switch can correct any electrical phase difference
between the PREFIX™ system and an outboard instrument microphone. Flip the PHASE
switch several times and use your ear to find the optimum setting. The best position for
the PHASE switch may change, depending on the sound system and/or venue acoustics.

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