ACOUSTIC GUITAR SYSTEM
QUICK START
To successfully combine microphone and pickup signals, it is best to start by presetting the microphone EQ to control feedback, then mixing in the pickup. The PREFIX™ ONBOARD BLENDER™ features three ways to control feedback; a PHASE switch, NOTCH filter and
Follow these steps to achieve a strong,
1.Before plugging in, set all controls as follows:
•NOTCH and VOLUME fully
•All EQ sliders at center position
•BLEND slider at MIC position
2.Plug in the instrument (see THE PREAMP section) with your amplifier set as desired.
3.Slowly increase the VOLUME until the guitar and speaker are approximately the same level. Play the lower strings and flip the PHASE switch. Leave the switch in the position that sounds the deepest and clearest. (See page 8)
4.Slowly increase the volume until the instrument starts to rumble or howl with low to mid level feedback
5.Adjust the NOTCH filter until the feedback is eliminated.
6.Slowly increase the VOLUME again, until you hear a squeal (high frequency feedback).
7.Lower the CONTOUR Level all the way down. Slowly adjust the Contour FREQUENCY slider until the feedback is eliminated. Raise the CONTOUR Level slider (if possible) to just below the threshold of feedback.
8.Gradually mix in the pickup signal by adjusting the BLEND slider.
The pickup signal will add significant attack and definition to your sound.
9.Adjust the BASS and TREBLE controls as desired.
Please note that these controls will affect pickup signal only.
10.Double check the PHASE switch position until you find the clearest response.
11.Play your guitar as loud as you want.
See diagram on page 6
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