Freq-Out™24-Bit ProcessorSpecifications
“seek & destroy” algorithms to
find, lock in on, and reduce
offending frequencies. The reduction of the offending frequency is
minimal, using only enough
attenuation to contain the feedback without affecting tonal quality. The attenuation happens very
quickly and is difficult to even
notice that it is taking place.
Essentially, what happens is
this. When the Freq-Out locates
an offending frequency, it applies
a notch filter, beginning with filter number 16. This filter is centered at the feedback frequency
with an attenuation of
-3 dB. Then, if the feedback continues, the filter depth is progressively increased until the feedback is gone, or maximum attenuation is reached. If the feedback
is momentary, such as a short
squeal, the filter will release in .1
dB steps until the feedback reoccurs, or the filter is returned to
flat (0 dB) response. Once
returned to flat, it is then available for further use. If the filter
depth is continually increased at
the same frequency, the filter will
become “locked” at the offend-
ing frequency until the unit is
reset. As feedback occurs at different frequencies, the process
continues as additional filters are
engaged. Monitoring continues
as the Freq-Out attempts to
release each filter a tenth of a dB
at a time.The unit maintains a
constant vigil in search of feedback frequencies and applies
only enough attenuation to eliminate the feedback, no more ... no
less.
AARRCCHHIITTEECCTTUURRAALL AANNDD
EENNGGIINNEEEERRIINNGG SSPPEECCIIFFIICCAATTIIOONNSS
The Peavey Freq-Out
™
shall be a
digital feedback eliminator system. It shall provide balanced
input via a combo female
XLR/female 1/4" TRS connector,
and balanced output via separate
male XLR and 1/4" TRS connectors. A RS-232 DB-9 connection
shall be provided for PC interface. Input sensitivity and output
level shall be switchable between
-10 dBV and +4 dBV (+4 dBu and
+18 dBu). Input impedance shall
be 40 k Ohms, and output impedance shall be 120 Ohms.
The Freq-Out shall provide a
48 kHz sample rate and utilize
24-bit converters. It shall have a
frequency response of +/- 0.5 dB
or better from 20 Hz to 20 kHz
referenced at 1 kHz. Signal-tonoise ratio (S/N) shall be greater
than 105 dB (typical), and total
harmonic distortion + noise
(THD/N) shall be less than
0.005% (typical).
The Freq-Out shall provide 16
available feedback filters (8
dynamic, 8 static). Filter bandwidth shall be 1/12 octave and
maximum filter depth shall be 30
dB.
The unit shall be 19" (48.3 cm)
wide x 1.75" (4.4 cm) high x 9"
(22.9 cm) deep and weigh 7.1 lbs.
(3.95 kg). It shall be rack-mountable with an EIA standard of one
unit. The system shall be the
Peavey Freq-Out.
WWAARRRRAANNTTYY
THREE + TWO LIMITED WARRANTY
NOTE: For details, refer to the
warranty statement. Copies of this
statement may be obtained by
contacting Peavey Electronics
Corporation, P.O. Box 2898,
Meridian, Mississippi 39302-2898.
Peavey Electronics Corporation • 711 A Street • Meridian, MS 39301
601-483-5376 • Fax 601-486-1678 • http://aa.peavey.com
©2001 Printed in USA 4/02
Specifications are subject to change without notice.