JL Audio HD900/5 - Manual (Page 8)

8 | JL Audio - HD900/5 Owner’s Manual
amPliFier mounting oPtions
The HD900/5 has two mounting options to
ease in installation.
standard mounting
The standard method of mounting requires
removal of the four corner caps with the 4 mm
hex wrench included with your amplifier. Using
appropriate mounting screws (not included),
secure the amplifier in all four corners and
replace the corner caps to cover the screws.
lateral mounting Feet
Lateral Mounting Feet are also included with
your HD900/5 to provide an alternative mounting
option. Each mounting foot should be attached
to the bottom of the amplifier by screwing the
provided bolt into the bottom of the amplifier and
up into the corner cap with the supplied 2.5 mm
hex wrench. Next, using appropriate mounting
screws (not included), secure the amplifier by its
four Lateral Mounting Feet.
Check before drilling any holes in your vehicle
to make sure that you will not be drilling
through a gas tank, brake line, wiring harness
or other vital vehicle system.
control Panel securitY coVer
The HD900/5 features a Control Panel
Security Cover. When installed, the cover ensures
that your amplifier settings are not accidentally
changed while creating a clean aesthetic for the
amplifier and your installation. The control panel
security cover is pre-installed at the factory and
must be temporarily removed for access to the
controls described throughout this manual.
The security cover is secured by a single 2.5
mm hex-head screw at the far right of the panel.
Loosen the hex-head screw to release the security
cover (it is not necessary to completely remove the
screw). To re-install the security cover once all
adjustments have been made, insert the tongue on
the cover’s left edge into the groove where the left-
side heatsink meets the control panel, hinge the
panel closed and secure the screw using the
supplied 2.5 mm hex wrench. Do not overtighten
the screw.