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Warwick Alien Acoustic Bass / Alien Acoustic 6-string / Rockbass Alien Deluxe 6-string Bass
Pickups: Fishman Acoustic Matrix
Electronics: Fishman Prefix Plus-T
1) Notch Filter: 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 turned off in the full counterclockwise position.
2) Low battery indicator
3) Volume Control: Controls the overall gain of the Prefix Plus-T™.
4) Bass Control: This is a boost / cut shelving tone control for low frequencies.
5) 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 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.
6) Treble Control: This is a boost / cut shelving tone control for high frequencies.
7) Brilliance Control: This is a resonant-style boost / cut filter that adds presence to the sound.
8) 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 as 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.
9) Contour Frequency: You can scoop out harsh midrange by setting the Contour Frequency slider slightly above center with
the Contour level cut to taste below the center detent. You can also cut midrange by boosting the Bass and Treble sliders to
realize an “implied” mid cut at 800 Hz.
10) Tuner: The preamp also has a built in chromatic tuner. The display shows the note actually played. The LEDs beneath the
display indicate whether the note is flat (lower red LED), sharp (upper red LED) or in tune (green LED in the middle). When
the tuner is activated, the sound is muted. The tuner is in true bypass mode when deactivated.
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All manuals and user guides at all-guides.com
