Bedienungsanleitung JL Audio 4 (Seite 9 von 13) (Englisch)

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16 | JL Audio - HD600/4 Owner’s Manual

“STATUS” LED / PROTECTION CIRCUITRY

There is a single multi-color LED on the

control panel of the amplifier to indicate the

amplifier’s operating status. This LED’s behavior

is as follows:

1) Flashing Green: amplifier is powering up,

audio output is muted.

2) Constant Green: amplifier is on and

functioning normally, audio output is active.

3) Constant Red: lights to indicate that the

amplifier has exceeded its safe operating

temperature, putting the amplifier into a

self-protection mode, which reduces the

peak power output of the amplifier. The red

light will turn green and the amplifier will

return to full-power operating mode when its

temperature returns to a safe level.

3) Constant Amber (yellow): lights to indicate

that the impedance of the speaker load

connected to the amplifier is lower than

the optimum load impedance range for the

amplifier. When this light is on, a protection

circuit engages and reduces the power output

of the “Front” or the “Rear” channels,

depending on which channel is experiencing

the problem. The amber indicator will also

light when a short-circuit is detected in the

speaker wiring (this can be a short between the

positive and negative speaker wires or between

either speaker wire and the vehicle chassis).

This can be used to diagnose a short-circuit by

only connecting one of the amplifier sections

at a time (“Front” or “Rear” channels). The

amber LED will light when you connect the

section that is experiencing the problem and

turn the volume up.

4) Alternating Red and Green: lights to indicate

that the amplifier is experiencing a fault

that may require service of the amplifier, its

wiring or the vehicle’s charging system. Audio

is muted when this fault occurs. The most

likely cause of this fault is a low supply voltage

condition. If battery voltage drops below 8.5

volts at any point, the amplifier (except for the

“Status” LED) will shut itself off to protect itself

and the vehicle’s charging system. If the voltage

drops below 6 volts, the “Status” LED will also

turn off.

The amplifier will turn back on automatically

when voltage climbs back above 9 volts. This

shut-down and turn-on behavior may happen

in a rapid cycle when bass-heavy program

material causes a weak charging system to

momentarily dip too low. If this is happening

in your system, have your charging system

inspected to make sure it is working properly.

If no problem is found with the supply

voltage to the amplifier and you are

still seeing alternating Red and Green

on the “Status” LED, it is likely that the

amplifier is suffering from an internal

fault that requires factory service.

For more information on troubleshooting this

amplifier, refer to Appendix D (pages 20, 21).

SERVICING YOUR JL AUDIO AMPLIFIER

If your amplifier fails or malfunctions, please

return it to your authorized JL Audio dealer so

that it may be sent in to JL Audio for service.

There are no user serviceable parts or fuses inside

the amplifier. The unique nature of the circuitry

in the JL Audio amplifiers requires specifically

trained service personnel. Do not attempt

to service the amplifier yourself or through

unauthorized repair facilities. This will not only

void the warranty, but may result in the creation

of more problems within the amplifier.

If you have any questions about the installation or

setup of the amplifier not covered in this manual,

please contact your dealer or technical support.

JL Audio Technical Support:

(954) 443-1100

9:00 AM – 5:30 PM (Eastern Time Zone)

Monday - Friday

APPENDIX A:

HD600/4 Specifications

Amplifier Topology: Class D, switching type with

patented Single-Cycle Control™ technology.

Power Supply: Pulse width modulation-regulated

switching power supply

Recommended Fuse Value / Type: 50A (AGU or

MaxiFuse™)

Rated Power (Stereo):

150W RMS x 4 @ 1.5-4Ω (11V - 14.5V)

Rated Power (Bridged):

300W RMS x 2 @ 3-8Ω (11V - 14.5V)

THD at Rated Power: <0.03% @ 4Ω per channel

(Average at 1 kHz)

Signal to Noise Ratio (20 kHz Bandwidth):

Referred to Rated Power: 110 dBA

Referred to 1 Watt: 88.2 dBA

Frequency Response: 6 Hz - 30 kHz (+0, -1dB)

Damping Factor:

300 @ 4Ω per ch. / 50 Hz

150 @ 2Ω per ch. / 50 Hz

Crossover Filters:

Filter Sets: Two (Front Channel and Rear Channel)

Filter Type: State-variable, 12 dB/octave Butterworth or

24 dB/octave Linkwitz-Riley

Filter Modes: Low-Pass or High-Pass, Defeatable.

Cutoff Freq. Range: Continuously variable, 50 - 500 Hz

Input Sections:

No. of Inputs: Two Stereo Pairs (Front and Rear)

Input Type: Differential-balanced with RCA jack inputs

Input Range: Switchable from 200mV - 2V RMS (Low)

to 800mV - 8V RMS (High)

Preamp Output:

2-Channel, buffered pass-through type, switch-selectable

to pass signal from “Front” inputs only, or from all four

inputs (summed).

Chassis Dimensions (LxWxH):

10.74 in. x 7.85 in. x 1.93 in. (273 mm x 199.5 mm x 49 mm)

Dimensions do not include connectors.

Due to ongoing product development, all specifications are subject to

change without notice.

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