User guide

True to the Music
PZ-Pre User Guide
Radial Engineering Ltd.
True to the Music
Radial Engineering Ltd. PZ-Pre User Guide
180° Polarity Reverse
The POST-EQ XLR balanced output features a polarity reverse
for absolute phase alignment. This recessed switch will invert the
signal polarity of the POST -EQ XLR output by reversing pins-2
and 3 at the XLR connector. The default position for the switch is
pushed out where pin-2 is positive. This is the AES standard for
XLR connectors and is sometimes called “pin-2 hot”.
INSTRUMENT CONNECTIONS
Because the PZ-Pre can accept dif ferent kinds of pickups it’ s
important to identify which type of pickup your instrument is
equipped with. Typical pickup systems include:
1. Magnetic (passive)
2. Piezo transducers (passive)
3. Magnetic or piezo with on-board preamp (active)
4. Combination magnetic and/or piezo with split output.
Magnetic Pickups (Passive)
These types of pickups are sometimes mounted in the sound
hole of an acoustic guitar . They are referred to as passive
pickups because there are no electronics between the pickup
and instrument output jack. Magnetic pickups connect directly to
the PZ-Pre with an instrument cable.
Piezo Transducers (Passive)
Piezo transducer pickups can be permanently mounted inside
an instrument, embedded in the bridge or attached to the sound
board with double sided tape. A piezo is considered passive when
there are no active electronics between the transducer and the
instrument output jack. The piezo transducer pickup converts
vibration into a very small electrical current. The current a piezo
produces is so small that it needs a specially designed amplif er
or buffer to increase the signal to a workable level.
The PZ-Pre is equipped with a piezo buf fer on each input to
ensure the best possible tone from passive piezo pickups. When
connecting a piezo pickup to the PZ-Pre you should engage the
piezo buffer for the input you’re connecting to. Set the switch to
its “inward” position to engage the piezo buffer.
98
1/4"
INSTRUMENT
OUTPUT
DI OUT
POST-E
Q
GROUND LIFT
POL REV
Bal.
Driver
OUTPUT SECTION
Instrument Amp Output
The ¼” OUTPUT
jack connects to the musician’ s on-stage
amplif er. This output is at the end of the PZ-Pre signal path and
is affected by all the controls.
Post-EQ Balanced XLR Output
This balanced XLR output is another active direct box. It produces
a 600 ohm, mic-level signal suitable for connection to mixing
consoles. The POST-EQ XLR OUT comes at the end of the PZ-
Pre signal path after the f lters, equalizer, PHASE, BOOST and
LOOP functions. It is intended to feed a stage monitoring system
or in-ear monitors allowing the player to control their on-stage
tone through the PZ-Pre controls.
XLR OUT
Polarity Reverse
XLR OUT
Ground Lift