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6 | JL Audio - M500/3 Owner’s Manual
TURNON LEAD
The M500/3 uses a conventional +12V remote
turn-on lead, typically controlled by the source
unit's remote turn-on output. The amplifier will
turn on when +12V is present at its “Remote”
input and turn off when +12V is switched off. If
a source unit does not have a dedicated remote
turn-on output, the amplifier’s turn-on lead can
be connected to +12V via a switch that derives
power from an ignition-switched circuit.
The M500/3’s “Remote” turn-on connector is
designed to accept 18 AWG – 12 AWG wire. To
connect the remote turn-on wire to the amplifier,
first back out the set screw on the top of the
terminal block, using the supplied 2.5mm hex
wrench. Strip 1/2 inch (12mm) of wire and insert
the bare wire into the terminal block, seating it
firmly so that no bare wire is exposed. While
holding the wire in the terminal, tighten the set
screw firmly, taking care not to strip the head of
the screw and making sure that the wire (not the
insulation) is firmly gripped by the wire clamp in
the terminal.
INPUT SECTION
(
L
)
(
R
)
Remote
Level
Control
CH. 1&2 SUB CH. Preouts
+12 VDC Ground Remote
CH. 1
(
L
)
CH. 2
(
R
)
Bridged Mono Subwoofer Output
INPUT SECTION
The M500/3’s input section allows you to send
signals to the amplifier section through the use
of two or four differential-balanced inputs.
Input connections are via one or two pairs of
traditional RCA-type jacks.
INPUT SECTION
(
L
)
(
R
)
Remote
Level
Control
CH. 1&2 SUB CH. Preouts
+12 VDC Ground
Remote
CH. 1
(
L
)
CH. 2
(
R
)
Bridged Mono Subwoofer Output
If you wish to send four discrete channels into
the M500/3, simply use all four inputs and set the
“Input Mode” switch in the “4 Ch.” position. The
amplifier will automatically combine the Sub Ch.
input signals to mono.
You may also choose to apply only two
channels of input to deliver signal to all three
amplifier channels. To do this, set the “Input
Mode” switch to “2 Ch.” and use only the
inputs to channels 1 & 2. The amplifier will
automatically combine the Ch. 1 & 2 input
signals to mono for the Subwoofer Channel.
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