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
