Jl-audio HD600/4 User Manual download pdf (Page 4)

6 | JL Audio - HD600/4 Owner’s Manual

Ground Connection

The chassis ground connection must be

made using 4 AWG or 8 AWG pure copper

wire and should be kept as short as possible,

while accessing a solid piece of sheet metal

in the vehicle. The surface of the sheet metal

should be sanded at the contact point to create

a clean, metal-to-metal connection between

the chassis and the termination of the ground

wire with a brass or copper power ring. For

optimal grounding, we recommend the

use of a JL Audio ECS master ground lug

(XB-MGLU). Alternatively, a sheet metal

screw or bolt can be used with a star washer.

Many vehicles employ small (10 AWG - 6 AWG)

wire to ground the battery to the vehicle chassis

and to connect the alternator’s positive

connection to the battery. To prevent voltage

drops, these wires should be upgraded to 4

AWG pure copper wire when installing amplifier

systems with main fuse ratings above 60A.

Turn-On Wire

The HD600/4 uses a conventional +12V remote

turn-on wire, typically controlled by the source

unit’s remote turn-on output. The amplifier will

turn on when +12V is present at its “Remote”

input and turn off when +12V is switched off. If

a source unit does not have a dedicated remote

turn-on output, the amplifier’s turn-on lead can

be connected to +12V via a switch that derives

power from an ignition-switched circuit.

The HD600/4’s “Remote” turn-on connector

is designed to accept 18 AWG – 12 AWG wire. 18

AWG is more than adequate for this purpose.

To connect the remote turn-on wire to the

amplifier, first back out the set screw on the

bottom of the Power Connector Plug, using the

supplied hex wrench. Strip 1/2 inch (12mm) of

wire and insert the bare wire into the receptacle,

seating it firmly so that no bare wire is exposed.

When using smaller wire, it may be necessary to

strip 1 inch of insulation from the wire and fold

the bare wire in half prior to insertion. While

holding the wire in the terminal, tighten the

set screw firmly using the supplied 2.5 mm hex

wrench, taking care not to strip the head of the

screw and making sure that the wire is firmly

gripped by the set screw.

Amplifier Power Connector Plug

To connect the power wires and the remote

turn-on wire to the amplifier, unplug the power

connector plug from the amplifier chassis (pull

back firmly) and back out the set screws on

the connector plug, using the supplied 4 mm

hex wrench for the +12 VDC” and “Ground”

connections and the supplied 2.5 mm hex wrench

for the “Remote” connection. Strip 3/8 inch (10

mm) of insulation from the end of each wire and

insert the bare wire into the receptacle on power

connector plug, seating it firmly so that no bare

wire is exposed. While holding each wire in place,

tighten each set screw firmly, taking care not to

strip the head of the screw.

Never make power connections with a “live”

wire. Always disconnect the negative battery

post before making any connections or

adjustments to a 12V power connection!

POWER AND TURNON CONNECTIONS

Before installing the amplifier, disconnect the

negative (ground) wire from the vehicle’s battery.

This will prevent accidental damage to the system,

the vehicle and your body during installation.

Rear Preouts

Remote

Level

Control

Front

Inputs

+12 VDC Ground Remote

+12V Battery Connection

You will need to connect a power wire to

the vehicle’s positive battery terminal, using an

appropriate power ring or specialized battery

terminal connector, such as the JL Audio

XB-BTU. This connection must be tight and

corrosion-free to ensure proper connectivity. This

wire MUST be fused appropriately for safety. Any

positive power wires run through metal barriers

(such as firewalls), must be protected with a high

quality insulating grommet to prevent damage to

the insulation of the wire. Failure to do so may

result in a dangerous short circuit.

Power Wire Requirements

The HD600/4’s “+12 VDC” and “Ground”

connections are designed to accept 4 AWG power

wire. 4 AWG pure copper wire is recommended

for any power wire run longer than 72 inches (180

cm). For runs shorter than 72 inches, 8 AWG pure

copper power wire is acceptable.

If you are installing the HD600/4 with other

amplifiers and wish to use a single main power

wire, use 2 AWG or 1/0 AWG pure copper wire

as a main power wire. This 2 AWG or 1/0 AWG

power wire should terminate into a distribution

block mounted as close to the amplifiers as

possible and should connect to the HD600/4 with

4 AWG or 8 AWG pure copper power wire.

Please note that lower AWG numbers mean

bigger wire and vice-versa (1/0 AWG is the largest,

2 AWG is smaller, then 4 AWG, then 8 AWG, etc.).

We do not recommend the use of “copper-

clad aluminum wire” or “CCA” wire because

this wire is significantly less conductive than

pure copper wire. Only use pure copper power

wire, such as JL Audio’s MetaWire™. Tinned

copper wire (silver color) is acceptable as the

tin-plating is only a very minor component of

the wire.

Fuse Requirements

The installation of a fuse on the main power

wire, within 18 wire inches (45 cm) of the positive

battery terminal is vital to protect the wire and

the vehicle from fire in the event of a collision

or short-circuit. The fuse value at each power

wire should be just high enough for all of the

equipment being run from that power wire. Do

not use a fuse with a value that far exceeds the

total fuse rating of the electronics connected to

the wire.

If only the HD600/4 is being run from that

power wire, we recommend a 50A fuse be used.

AGU (big glass fuse). AFS (small blade fuse)

or MaxiFuse™ (big plastic-body fuse) types are

recommended. If other amplifiers are also being

powered from the wire and exceed 80 amps in

total fuse rating, we recommend the use of an

ANL (large-blade) fuse and holder. Please consult

with your JL Audio dealer to make sure that the

wire, fuse holder and fuse rating you have selected

are appropriate for your system’s needs.

If other amplifiers are also being powered from

a main power wire and exceed 80 amps in total

fuse rating, we recommend the use of an ANL

(large-blade) fuse and holder. Each amplifier can

then be fused independently at the outputs of

the power distribution block. Use JL Audio part

XC-FOA-2PAK and appropriate MaxiFuse™ type

fuses with JL Audio distribution blocks.

Please consult with your JL Audio

dealer to make sure that the wire, fuse

holder and fuse ratings are appropriate

for your system’s needs. The safety of

your installation depends on appropriate

power connections and fuse protection.

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OWNER’S MANUAL 1
INSTALLATION NOTES: 12

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Jl-audio HD600/4 User Manual Page 4

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