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4 | JL Audio - HD750/1 Owner’s Manual
PRODUCT DESCRIPTION
The JL AudioHD750/1is a very powerful and
compact monoblock (single channel), wide-range
amplifier utilizing patented Single Cycle Control™
Class D technology. This groundbreaking
technology delivers referencegrade sonic
performance while requiring far less current from
the vehicle’s electrical system than a conventional
amplifier. Unlike most monoblock amplifiers, the
HD750/1is a wide-range design, so it can be used
as a subwoofer amplifier or as a very powerful
mid-bass or mid-range amplifier, using a
secondHD750/1to form a stereo pair. Its effective
frequency response is from 6 Hz (very low bass)
to 8 kHz (lower treble range).JL Audio’s exclusive
R.I.P.S. power supply design optimizes the output
the amplifier for any impedance between 1.5
and 4 ohms, allowing you to get full use of the
HD750/1’s performance capabilities with a wide
range of speaker systems.
The tightly regulated power supply design also
means that the HD750/1’s clean power output
capability remains stable over a wide range of
vehicle voltages, resulting in enhanced fidelity.
A flexible input and crossover section permits
operation with a wide variety of source units
and system configurations. The HD750/1’s
preamp output can send pass-through signals
from the inputs to feed additional amplifier(s).
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