True to the Music
Radial Engineering Ltd.
PZ-Pre
™
User Guide
Pre-EQ DI Output
This balanced XLR output is essentially
an active direct box. It produces a
600 Ohm, mic-level signal suitable
for multi-channel concert snake and
mixing console. It captures the dry
signal before the lters and equalizer
section and is not affected by the
PHASE, BOOST and LOOP functions.
It is intended to feed a PA or recording
system with a clean, unprocessed
signal.
Ground Lift for Balanced XLR Outputs
The balanced XLR outputs are equipped with a recessed set-
and-forget ground LIFT switch on the rear panel to reduce hum
and buzz caused by ground loops. If you hear any noise, push in
the switch to help eliminate the problem.
Low-Cut Filter
The three position low-cut filter (also
known as a hi-pass filter) is designed
to eliminate low frequency resonant
feedback. Selecting either the 80Hz or
200Hz positions will roll-off low frequencies
preventing uncontrolled, run-away
resonant feedback. The LO-CUT filter
can be removed from the signal path by
setting it to BYPASS.
Notch Filter
To help control feedback, a sweepable notch
lter allows you to focus on a very narrow
frequency and surgically remove it without
affecting the over-all tone of the instrument.
The notch filter on the PZ-Pre has two
controls: NOTCH sweeps the frequency
spectrum of the lter from 56Hz to 220Hz
while the NOTCH Q switch controls the width
and attenuation of the lter. The NORMAL
setting introduces a -8dB notch and the
DEEP setting introduces a -15dB notch. The
notch lter can be removed from the signal
path by setting it to BYPASS.
PRE-EQ OUT, FILTER and EQ SECTIONS
Mixing Console
6
Low-Cut
Filter
Notch
Filter
3-Band
EQ
Power
Boost
Effect
Loop
Dry
Pre-EQ
Out
Input
Wet
Post-EQ
Out
Send Recv
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