Protect Your Hearing; Serial Number - JL Audio JX400/4D Owner's Manual

PROTECT YOUR HEARING!

We value you as a long-term customer. For
that reason, we urge you to practice restraint in
the operation of this product so as not to damage
your hearing and that of others in your vehicle.
Studies have shown that continuous exposure to
high sound pressure levels can lead to permanent
(irreparable) hearing loss. This and all other
high-power amplifiers are capable of producing
such high sound pressure levels when connected
to a speaker system. Please limit your continuous
exposure to high volume levels.
While driving, operate your audio system in
a manner that still allows you to hear necessary
noises to operate your vehicle safely (horns,
sirens, etc.).
+12 V Power
Connector
Power Status
Indicator
(pg. 11)
Protection Status
Filter Mode
Selector
2
Chassis Ground
Connector
(pg. 5)
Remote Turn-On
Connector
(pg. 5) (pg. 6)
+12 VDC Ground Remote
Input Mode
Selector
(pg. 7)
High-Level
Indicator Input Jack
(pg. 11) (pg. 6,7)
Filter Input
Frequency Sensitivity
Control Control
(pg. 8)
(pg. 8) (pg. 8)

SERIAL NUMBER

In the event that your amplifier requires
service or is ever stolen, you will need to have
a record of the product's serial number. Please
take the time to enter that number in the space
provided below. The serial number can be found
on the bottom panel of the amplifier and on the
amplifier packaging.
Serial Number:
CH 1 & CH 2
Speaker Outputs
(pg. 10)
Bridged
CH. 1 CH. 2
(L) (R)
CH 3 & CH 4
Preamp Input Jacks
(pg. 6)
CH 1 & CH 2
Preamp Left & Right
Input Jacks Preamp Output Jacks
(pg. 6) (pg. 9)
CH 3 & CH 4
Speaker Outputs
(pg. 10)
Bridged
CH. 3 CH. 4
(L) (R)
High-Level
Input Jack
(pg. 6,7)
Filter Input
Filter Mode
Frequency Sensitivity
Selector
Control Control
(pg. 8)
(pg. 8) (pg. 8)
JL Audio