Front Panel Features - Peavey PZS 140 Owner's Manual

FRONT PANEL:
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FRONT PANEL FEATURES:

1. CHANNEL LEVEL CONTROLS
Controls the signal level being sent to the assigned zones from each channel.
2. CHANNEL LOW EQ CONTROL (BASS)
Active shelving type equalization control that adjusts the channel low-frequency response.
Clockwise rotation boosts low frequencies while counter-clockwise rotation reduces low
frequencies.
3. CHANNEL HIGH EQ CONTROL (TREBLE)
Active shelving type equalization control that adjusts the channel high-frequency response.
Clockwise rotation boosts high frequencies while counter-clockwise rotation reduces high
frequencies.
4. CHANNEL 1 and 2 THRESHOLD CONTROL (SCREWDRIVER)
Controls the level of signal needed to trigger the ducking circuitry in channels 1 and 2. When
the ducking circuit is active, the music levels will be reduced by 20 dB to allow the page to be
heard. Turning the control clockwise increases the sensitivity of the ducking circuitry. Turning
the control completely counter-clockwise defeats the channelsÕ ducking capabilities.
NOTE: This control and the channel level control (1) are not related, i.e., the channel level
control does not effect the threshold level sensitivity. The threshold control should be set high
enough that normal speech into the microphone (paging) will trigger the ducking circuitry, but
not so high as to allow the normal room ambient noise level to trigger the ducking circuitry.
This usually takes some experimentation and will vary depending upon applications.
5. CHANNEL 1 and 2 HOLD CONTROL
Controls the amount of time the signal is held ducked after the page has been completed.
Clockwise rotation increases the hold time to a maximum of four seconds. Counter-clockwise
rotation decreases the hold time to a minimum of 0.5 seconds. The hold time should be set
long enough to prevent the ducked signal from returning to normal levels during a page.
6. SIGNAL PRESENCE LED
Green LED that indicates a signal is present in the channel. The signal is sampled directly
from the preamp (before the level control) and will illuminate even if the level control is turned
completely down. A signal level of -60 dBu or greater in the channel will illuminate this LED.
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