Crumar Spirit - Filter Mode Specifics; Lower Filter Response Modes; Cutoff Frequency Adjustments

LOWER
FILTER
CUTOFF
LOWER
FILTER
CUTOFF
HIGH Q
LOW Q
UPPER
FILTER
CUTOFF
UPPER
FILTER
CUTOFF
LOWER FI LTER
IN 'BANDPASS'
OR 'OVERDRIVE"
LOWER Fill ER
IN ~HI GHPASS·
Extent that Upper Filter tracks keyboard, always.
Extent that Lower Filter tracks keyboard when
DYNAM IC switch position selected.
FORMANT position disconnects the Lower Filter
from keyboard, FI L TER ENVELOPE, modulation
- - X and Y, and FI L TER PEDAL input on the
rear panel.
DYNAMIC position connects control signal sources
mentioned above.
MASTER
20B
o I 10
L __ ,
-CUTOFF-I-
I
I
20J
L.OWER ONLY
o I 10
L __ ,
-TRACKINGI-
I
D-
MASTER CUTOFF moves the cutoff frequencies of all filter sections through
the audio range. The cutoff frequency of the Lower Filter coincides with
that of the Upper Filter when the LOWER ONLY control is set to 8.
LOWER ONLY CUTOFF moves· the cutoff of the Lower Filter relative to
the Upper Filter. When this control is set to 8, both filter cutoff frequencies
are
the same. When LOWER ONLY CUTOFF is less than 8, the cutoff
frequency of the Lower Filter is set lower than the Upper Filter. This allows
you to use the Lower Filter to create a "formant" or peak of energy below
the Upper cutoff; you can also create twin filter peaks, and other interesting
filter responses.
31