User guide

True to the Music
Radial Engineering Ltd. PZ-DI
™
User Guide
3
PIEZO CHANNEL CONTROL SECTION
12 13 14 15 16
12. ¼” GROUND LIFT: disconnects the ground connection at the
ACOUSTIC PIEZO ¼” output to reduce hum and buzz caused
by ground loop between amplifi ers.
13. XLR GROUND LIFT: disconnects the pin-1 ground connection on
the XLR output to reduce hum and buzz caused by ground loops.
14. XLR 180º POLARITY: reverses signal polarity at the XLR
output to help with phase and feedback problems.
15. LO-CUT FILTER: three position switch removes low
frequencies from the acoustic piezo signal.
Position 1 = Flat (bypassed).
Position 2 = Cuts low frequencies below 75Hz.
Position 3 = Cuts low-mid frequencies below 220Hz.
16. HI-CUT FILTER: three position switch removes high
frequencies from the acoustic piezo signal.
Position 1 = Flat (bypassed).
Position 2 = Cuts high frequencies above 2.8kHz.
Position 3 = Cuts very high frequencies above 7.2kHz.
TYPICAL SYSTEM SETUP