JL Audio MHD900/5-24V Manuel utilisateur

OWNER’S MANUAL

5-ChannelClass-D Marine System Amplifier

Thank you for purchasing a JL Audio amplifierfor

your marine sound system.

Your amplifier hasbeen designed and manufactured to exacting

standardsin order to ensure years ofmusicalenjoymentin your vessel.

For maximum performance,we highly recommend thatyou have

your new amplifier installed by an authorized JL Audio dealer. Your

authorized dealer has the training,expertise and installation equipment

to ensure optimum performance from thisproduct.Should you

decide to installthe amplifier yourself,please take the time

to read this manualthoroughly so asto familiarize yourself

with its installation requirementsand setup procedures.

Ifyou have any questionsregarding the instructionsin this

manualor any aspectofyour amplifier’soperation,please contactyour

authorized JL Audio dealer forassistance.Ifyou need further assistance,

please callthe JL Audio TechnicalSupportDepartment

at(954)443-1100 during businesshours.

NOT FOR USE IN 12 V SYSTEMS!

2 | JL Audio -MHD900/5-24V Owner’sManual

PROTECT YOUR HEARING!

We value you asa long-term customer.For

thatreason,we urge you to practice restraintin

the operation ofthisproductso as notto damage

yourhearing and thatofothersin yourvessel.

Studieshave shown thatcontinuousexposure to

high sound pressure levels can lead to permanent

(irreparable)hearing loss.Thisand allother

high-power amplifiersare capable ofproducing

such high sound pressure levels when connected

to a speaker system.Please limityour continuous

exposure to high volume levels.

While driving,operate your audio system in

a manner thatstillallows you to hear necessary

noises to operate your vesselsafely (horns,

sirens,etc.).

SERIAL NUMBER

In the eventthatyour amplifier requires

service oriseverstolen,you willneed to have

a record ofthe product’sserialnumber.Please

take the time to enterthatnumberin the space

provided below.The serialnumbercan be found

on the bottom panelofthe amplifier and on the

amplifierpackaging.

SerialNumber:

INSTALLATION APPLICATIONS

This amplifierisdesigned foroperation in

vesselswith 24 volt,negative-ground electrical

systems.Use ofthisproductin vessels with

positive ground and/orvoltagesotherthan 24 V

may resultin damage to the productand willvoid

the warranty.

This productis notcertified or approved for

use in aircraft.

Do notattemptto “bridge” the outputsofthis

amplifierwith the outputsofa second amplifier,

including an identicalone.

PLANNING YOUR INSTALLATION

Itis importantthatyou take the time to read

thismanualand thatyou plan outyour

installation carefully.The following are some

considerations thatyou musttake into account

when planning yourinstallation.

FilterFrequency

Selector

(pg.11)

Infrasonic Filter

Selector

(pg.11)

FilterFr

elec

(pg

InputSensitivity

Control

(pg.10)

FilterSlope

Selection

(pg.11)

InputSensitivity

Control

(pg.10)

PowerStatus

Indicator

(pg.15)

Left& Right

InputJacks:

Subwoofer

(pg.9)

Left& Right

InputJacks:

FrontChannels

(pg.9) Jack for

Remote Level

ControlKnob

(pg.13)

Left& Right

InputJacks:

RearChannels

(pg.9)

ChassisGround

Connector

(pgs.6-7)

Remote Turn-On

Connector

(pgs.6-7)

+24 V Power

Connector

(pgs.6-7)

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