JBL Professional VT4881ADP Stereo Amplifier User Manual


 
18
VERTEC User’s Guide
AC Power Module
POWER Indicator:
Blue LED – located near power inlet lights when AC power is applied.
Amp READY Indicator:
Green LED near power inlet, ON during normal operation, long pulse
during sleep mode.
Sleep Mode:
If audio input signals are not detected for 2 hours, the amplifi er will
go into sleep/standby mode; the amplifi er output section is turned
off while the supply powering the DP Input Module and DSP logic
remains active. This mode reduces current draw and heat loss.
While in sleep mode the READY indicator pulses slowly. Recovery
from sleep mode is instantaneous when an audio signal is detected
.
Thermal Management:
JBL DrivePack® systems are cooled by Passive Convection. No fans
are used in any part of the thermal management system. To maintain
effi cient cooling it is a good practice to assure open space around the DrivePack units.
Operating Temperature:
The system will remain touchable during quiescent operation and will not provide a burn hazard during any
operating condition.
Input Module Controls, Indicators and Connectors
JBL DrivePack® systems are equipped with a modular input bay and input modules are available in three
versions in the VERTEC DP Series: the DPIP, DPAN and the DPCN.
Audio Signal Distribution
Connecting source audio signals to the input modules on JBL
DrivePack systems is similar to daisy-chaining multiple external
amplifi er channels together.
Assuming an output device source impedance of 100 Ohms and a
10:1 load to source ratio, up to 20 JBL DrivePack units typical can be
linked together on one output source without using a distribution
amp.
NOTE: Please refer to VERTEC DP Series spec sheets for additional
features and specifi cations of the DPIP, DPAN and DPCN input
modules.