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10 | JL Audio - XD600/1v2 Owner’s Manual
PREOUTS
The XD600/1v2 incorporates a buffered, pass-
through preamp output section, so that additional
amplifiers can be easily added to the system.
The preamp output delivers the same signal
that is connected to the XD600/1v2’s inputs.
Remote
Level
Control
+12 VDC Ground Remote
Mono Subwoofer Output
Note: The preamp output signal is not affected by
the amplifier’s filter controls. If the input signal is
full-range, the preamp output will be full-range.
Note: When the “Input Voltage” switch is in its
“Low” position, the level of the “Preouts” signals
matches the input signal levels (unity gain). When
the “Input Level” switch is in the “high” position,
the level of the input signal is attenuated –12 dB
to produce a line level signal at the “Preouts”.
This ensures a proper line level signal output
under both conditions.
If you plan to use the “Preouts” to feed a stereo
amplifier, you must connect a stereo signal to
the input of the amplifier. A mono signal into
the amplifier will result in a mono signal out of
the preamp output.
SUBWOOFER OUTPUTS
The XD600/1v2 is designed to deliver power
into subwoofer loads equal to or greater than 2
ohms of nominal impedance.
The XD600/1v2’s subwoofer outputs are
designed to accept 16 AWG - 8 AWG wire. To
connect the subwoofer wires to the amplifier, first
back out the set screws on the top of the terminal
block, using the supplied 2.5 mm hex wrench.
Strip 1/2 inch (12 mm) of insulation from the
end of each 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 place,
tighten the set screw firmly, taking care not to
strip the head of the screw.
Remote
Level
Control
+12 VDC Ground Remote
Mono Subwoofer Output
You will notice that there are two “+” positive
connections and two “–” negative connections.
This is to facilitate multiple subwoofer wiring.
The two positive and two negative
connections are connected in parallel inside
the amplifier. They are not stereo outputs.
Connecting two subwoofers, each to one set of
positive and negative terminals, will result in
a parallel subwoofer connection. When only
connecting one pair of subwoofer wires, it is not
necessary to use both sets of connections.
Subwoofer loads below 2 ohms nominal are not
recommended and may cause the amplifier
to initiate a protection mode, which reduces
power output.
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