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4 | JL Audio - HD900/5 Owner’s Manual
PRODUCT DESCRIPTION
The JL Audio HD900/5 is a very powerful
and compact five-channel amplifier utilizing
patented Single Cycle Control™ Class D
technology for all channels. This groundbreaking
technology delivers reference-grade, full-
range sonic performance while requiring
far less current from the vehicle’s electrical
system than a conventional amplifier.
JL Audio’s exclusive R.I.P.S. power supply
design optimizes the output of each channel
section for any impedance between 1.5 and 4
ohms per channel (3-8 ohms bridged on front and
rear sections) allowing you to get full use of the
HD900/5’s performance capabilities with a wide
range of speaker systems.
The tightly regulated power supply design also
means that the HD900/5’s clean power output
capability remains stable over a wide range of
vehicle voltages, resulting in enhanced fidelity.
The HD900/5 flexible, studio-grade signal
processing allows it to be deployed in several
different system configurations:
1) As a five-channel amplifier in a bi-amplified
system, driving four satellite speakers (100W x
4), plus a subwoofer system (500W x 1).
2) As a very powerful three-channel amplifier
in a bi-amplified system, driving two satellite
speakers (150W x 2, bridged), plus a subwoofer
system (500W x 1).
3) As a five-channel amplifier in a tri-amplified
system, driving two tweeters (100W x 2), plus
two woofer/mids (100W x 2), plus a subwoofer
system (500W x 1). An external 2-way
crossover is required for this application.
The HD900/5’s flexible input and crossover
sections permit operation with a wide variety
of source units and system configurations.
It can be operated with a single pair of
stereo inputs, with two pairs of stereo inputs
(front and rear) or with separate inputs for
its front, rear and subwoofer channels.
As we said, it’s very flexible.