Product Description
The JL Audio HD600/4 is a very powerful
and compact four-channel, full-range amplifier utilizing patented Single Cycle Control™ Class D technology for all channels. This groundbreaking technology delivers reference- grade 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 pair for any impedance between 1.5 and 4 ohms per channel (3-8 ohms bridged) allowing you to get full use of the HD600/4’s performance capabilities with a wide range of speaker systems.
The tightly regulated power supply design also means that the HD600/4’s clean power output capability remains stable over a wide range of vehicle voltages, resulting in enhanced fidelity.
The HD600/4 flexible, studio-grade signal processing allows it to be deployed in a wide range of system applications:
1)As a four-channel (150W x 4) full-range amplifier, delivering full-range signals to two separate stereo speaker systems (front and rear, for example).
2)As a powerful (150W x 4) four-channel satellite amplifier in a bi-amplified system, delivering high-passed signals to front and rear speaker systems. Preamp outputs permit connection of a separate amplifier to drive the subwoofer system.
3)As a 600W full-system amplifier in bi-amplified mode with one channel pair driving subwoofers in low-pass mode (150W x 2 or 300W x 1) and the other channel pair driving main speakers in high-pass mode (150W x 2).
4)As a very powerful (300W x 2) full-range amplifier, delivering full-range signals to a stereo speaker system.
5)As a very powerful (300W x 2) two-channel satellite amplifier in a bi-amplified system, delivering high-passed signals to a stereo speaker system. Preamp outputs permit connection of a separate amplifier to drive the subwoofer system.
6)As a powerful (300W x 2) two-channel subwoofer amplifier in a bi-amplified system, delivering low-passed signals to a dual subwoofer system. Preamp outputs permit connection of a separate amplifier to drive the satellite speakers.
The HD600/4’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 or with separate inputs for its front and rear channels.
The HD600/4’s preamp output can send pass- through signals from the Front Inputs only or it can sum all four input channels to feed a non- fading signal to a separate subwoofer amplifier.
As we said, it’s very flexible.
Typical Installation Sequence The following represents the sequence for a typical amplifier installation, using an aftermarket source unit or OEM Interface processor (like the CleanSweep® CL441dsp). Additional steps and different procedures may be required in some applications. If you have any questions, please contact your authorized JL Audio dealer for assistance.
1) Disconnect the negative battery post connection and secure the disconnected cable to prevent accidental re-connection during installation. This step is not optional!
2) Run power wire from the battery location
to the amplifier mounting location, taking care to route it in such a way that it will not be damaged and will not interfere with vehicle operation. 4 AWG is recommended for wire runs greater than 72 inches (180 cm) in length. Use of 8 AWG power wire is acceptable for shorter runs, such as from a power distribution block to the amplifier or from a trunk-mounted battery. Use a 2 AWG or 1/0 AWG main power wire with a power distribution block when additional amplifiers are being installed with the HD600/4 and powered from the same main power wire.
3) Connect power wire to the positive battery post. Fuse the wire with an appropriate fuse block (and connectors) within 18 inches (45 cm) wire length of the positive battery post. This fuse is essential to protect the vehicle.
Do not install the fuse until the power wire has been connected to the amplifier.
4) Run signal cables (RCA cables) and remote turn-on wire from the source unit or interface processor to the amplifier mounting location.
5) Run speaker wire from the speaker systems to the amplifier mounting location.
6) Find a good, solid, bare metal grounding point close to the amplifier and connect the negative power wire to it using appropriate hardware. Use minimum 8 AWG power wire, no longer than 36 inches (90 cm) or 4 AWG wire up to 60 inches (150 cm) long from the amplifier to the ground connection point. In some vehicles, it may be necessary to upgrade the battery’s ground wire as well. (See page 7 for important notice).
7) Securely mount the amplifier using appropriate hardware. (See page 8 for detailed mounting instructions).
8)Connect the remote turn-on wire and the positive and negative power wires to the amplifier’s power connector plug. Then insert the power connector plug into the amplifier’s power connector receptacle, pushing firmly.
9) Connect the RCA input cables
to the amplifier.
10)Connect the speaker wires to the speaker connector plugs and insert the plugs firmly into the speaker connector receptacles.
11)Carefully review the amplifier’s control settings to make sure that they are set according to the needs of the system.
12)Install power wire fuse (50A for a
single HD600/4) and reconnect the negative battery post terminal.
13)Turn on the source unit at a low level to double-check that the amplifier is configured correctly. Resist the temptation to crank it up until you have verified the control settings.
14)Make necessary adjustments to the input sensitivity controls to obtain the right overall output and the desired balance
in the system. See Appendix C (pages 18, 19) for the recommended input sensitivity setting method.
15)Enjoy the fruits of your labor with your favorite music.
