User manual FENDER PREFIX ONBOARD BLENDER

[. . . ] The ONBOARD BLENDERTM can be plugged into any instrument-level audio input with excellent results. THE PICKUP The included ACOUSTIC MATRIXTM pickup is made with a unique co-polymer sensing material available exclusively from FISHMAN. The sensing material exhibits a sensitivity and dynamic range that far surpasses all other known materials. The ACOUSTIC MATRIXTM transducer is a fully EMI shielded, multi-layer sandwich of co-polymer strips that run the length of the pickup. [. . . ] 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. 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 battery. CONTROLS NOTCH FILTER This is a fixed level, variable-frequency filter for eliminating feedback or unwanted resonance. The 4 ACOUSTIC GUITAR SYSTEM NOTCH FILTER is effectively off in the full counter-clockwise position. It may be used to shape the instrument's tone or to control feedback (see pages 6 and 7). The CONTOUR Level slider controls the amount of boost or cut applied to the selected Contour FREQUENCY. The Contour FREQUENCY slider determines the frequency band that is boosted or cut by the CONTOUR Level control. 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. Whenever you play through a different sound system or at a different venue, flip the PHASE switch several times and use your ear to find the optimum setting. BLEND CONTROL This control determines the balance between microphone and pickup signals. This control can be used as a feedback "escape hatch" if you ever need to instantly shut off the microphone during a performance. 5 FISHMAN PREFIXTM ONBOARD BLENDER SUGGESTED EQ SETTINGS 50 Hz + 12 dB PHASE 900 Hz + 12 dB - 12 dB + 12 dB - 12 dB QUIET LOUD 10 kHz ANTI-FEEDBACK Refer to page 3. If you are playing through an electric guitar amplifier or have dead strings on the instrument, you can brighten up your sound by setting the Contour FREQUENCY slider to 10 kHz and raising the CONTOUR Level to taste. If you plan to play at high stage volume levels, dial in more pickup than microphone to avoid feedback. - 12 dB MIC BATTERY PICKUP LOW 250 Hz BRILLIANCE 50 Hz + 12 dB PHASE 900 Hz + 12 dB - 12 dB + 12 dB - 12 dB QUIET LOUD 10 kHz - 12 dB MIC BATTERY PICKUP LOW 250 Hz 6 ACOUSTIC GUITAR SYSTEM MID CUT You can scoop out harsh midrange by setting the FREQUENCY slider slightly above center with the CONTOUR Level cut to taste below the center detent. [. . . ] This is the frequency that generally feeds back when a mic'ed guitar and speaker are in phase. If you set your PHASE switch to eliminate cavity resonance (out of phase) and then move 5 1/2 feet towards or away from the speaker, you will effectively put the mic'ed guitar/speaker relationship at 100 Hz back in phase; in the line of fire for low frequency feedback. PHASE INVERTED 180° PHASE INVERTED 180° DISTANCE: 5' 7" 11' 4" 17 ' 22' 7" The PHASE switch on the ONBOARD BLENDERTM in effect electronically "moves" your instrument's position relative to the speaker by inverting the phase 180° every time you flip it. B. This warranty gives you specific legal rights and you may also have other rights which may vary from state to state. RETURN POLICY To return products to FISHMAN TRANSDUCERS, you must follow these steps. . . [. . . ]