User manual FISHMAN PREFIX STEREO BLENDER

[. . . ] To compliment and contrast this pickup, a miniature electret microphone (mounted to the underside of the preamp chassis) captures the guitar's elusive natural ambience and sound chamber resonance. Blend the pickup and Microphone together for a powerful and cohesive acoustic guitar tone that is deeper and more "filled out", than the sound of either the microphone or pickup alone. The Stereo Blender preamp module incorporates a unique flip-top battery compartment for easy access. Levels are set by the master volume and blend controls. [. . . ] Slowly increase the volume and play the notes from the open low E, up to the fourth fret G sharp until the instrument starts to rumble or howl with feedback on one or more of these notes. Adjust the Notch control until this feedback is eliminated (usually between one and two o'clock on the dial). Increase the volume some more and play (on the low E string) the fifth fret A and above. Flip the phase switch to the position that eliminates feedback in this region. 3 Prefix - Stereo Blender Quick Start Cont'd . . . Slowly increase the Volume again, until you start to hear a high squeal. Lower the Contour Slider (level) all the way down and adjust the Frequency slider until the squealy feedback is eliminated. Raise the Contour slider (if possible) to just below the threshold of feedback. Move the Blend slider to the right to mix in the pickup signal (B). Adjust the Bass and Treble controls as desired. Note that these controls do not affect the microphone signal. See diagram on page 9 SETUP Battery Compartment Pull the small tab at the top of the Onboard BlenderTM toward you. The body of the preamp will swing out, revealing the battery compartment. Observe the polarity marks on the battery clip and install a fresh 9V alkaline battery accordingly. 9 Volt Battery Stereo Blender Microphone Trim Control A small circular potentiometer is located on the underside of the preamp just below the battery compartment. This is a "set it and forget it" control. Use it to initially calibrate the microphone balance in relation to the pickup. Set the Blend slider to the center position and with a small slotted screwdriver, adjust the Trim Control until both the microphone and pickup levels are balanced to your taste. 4 USER GUIDE Microphone Trim Control Mono/Stereo Switch A small slide switch, located on the underside of the preamp (across from the Notch control pot), lets you choose between mono and stereo operation. Leave the switch in the factory set Mono position when you use a standard instrument cable. Mono / Stereo Switch MONO / STEREO If you wish to split the pickup and microphone signals for separate external processing (such as with a Fishman Acoustic Blender), move the switch to the Stereo position and use a stereo cable or a stereo "Y" cable to carry the two signals to separate destinations. In the stereo mode, the pickup goes to the tip output and the microphone goes to the ring output. Mono MIC MIC Stereo Microphone & Pickup Signals Tip Pickup Ring Microphone MONO CABLE STEREO CABLE Note that the microphone signal at the ring output is affected only by the Volume, Blend and Phase controls. 5 Prefix - Stereo Blender Endpin Jack When you plug into the endpin jack, the Stereo Onboard BlenderTM switches on. To conserve the battery, remove the instrument cable from the endpin jack when the system is not being used. It is a good idea to turn down your amp or mixer input before you plug into the endpin jack. Doing so will protect your speakers (and your ears) from loud pops. Battery Low LED Plug into the endpin jack and the Low Battery light will flash momentarily, indicating that the power is on. [. . . ] Then move the Contour slider below its detent to taste. Treble This control affects the under-saddle pickup signal only!A boost here will help to "cut through the mix". Conversely, cutting the Treble will mellow and subdue your amplified tone. Blend Control This control determines the balance between the two pickups. Move the slider left to emphasize the Microphone (A). [. . . ]