JBL VT4889ADP User Manual page 18

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  hours, the amplifier
will go into sleep/standby mode; the amplifier 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 efficient 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 V T DP Series: the DPIP, DPDA, DPAN and the DPCN.
ER EC
Audio Signal Distribution
Connecting source audio signals to the input modules on JBL
DrivePack systems is similar to daisy-chaining multiple external
amplifier channels together.
Assuming an output device source impedance of 100 Ohms
and a 10:1 load to source ratio, up to 0 JBL DrivePack units
typical can be linked together on one output source without
using a distribution amp.
NOTE: Please refer to V
ER
additional features and specifications of the DPIP, DPAN and
DPCN input modules.
18
V T User's Guide
ER EC
T DP Series spec sheets for
EC