User manual FISHMAN PREFIX ONBOARD BLENDER

[. . . ] Levels are set by the master VOLUME and BLEND controls. A variable NOTCH filter, shelving BASS & TREBLE, semi-parametric CONTOUR and a PHASE switch are included for precise tone shaping and feedback control. 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. This technology is not available from any other manufacturer. [. . . ] 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 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 affected frequency is variable from 50 to 900 Hz. The 4 ACOUSTIC GUITAR SYSTEM NOTCH FILTER is effectively off in the full counter-clockwise position. VOLUME CONTROL The VOLUME control affects both microphone and pickup. BASS CONTROL This is a boost/cut shelving tone control. This control affects the pickup signal only. The center detent yields a flat response. CONTOUR This is a wide-range semi-parametric filter. It may be used to shape the instrument's tone or to control feedback (see pages 6 and 7). The CONTOUR control affects both the pickup and microphone. 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 between 250 Hz and 10 kHz. TREBLE CONTROL This is a boost/cut shelving tone control. This control affects the pickup signal only. The center detent yields a flat response. [. . . ] In this case, 1/2 the wavelength is about 5 1/2 feet. 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 remains valid only if repairs are performed by FISHMAN. 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. . . [. . . ]