Subwoofer Outputs - JL Audio RD500/1 Owner's Manual

PREOUTS
The RD500/1 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 RD500/1's inputs.
( L )
Ground Remote
( R )
Note: The preamp output signal is not affected by
the amplifier's filter controls. If the input signal is ( L )
full-range, the preamp output will be full-range.
( R )
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.
( L )
( R )
Remote
Level
Control
(RBC-1)

SUBWOOFER OUTPUTS

The RD500/1 is designed to deliver power into
subwoofer loads equal to or greater than 2 ohms
of nominal impedance.
The RD500/1'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
Remote
the set screw firmly, taking care not to strip the
Level
Control
head of the screw.
(RBC-1)
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 enter a protection mode.
Mono Subwoofer Output
9