JL Audio NexD XD500/3, Owner'S Manual

Page: 11 / 40

11
ENGLISH
1) Left Channel Only or Right Channel Only
Information: If you wish to send a left-only
or right-only signal to the XD500/3’s main
channels you must use a “Y-Adaptor” to split
the single channel signal into both left and
right RCA inputs of the bridged channel
pair. This option is used when deploying the
XD500/3’s main channels to drive left channel
speakers only or right channel speakers only.
2) Left + Right Channel Information: When
bridged and fed by a stereo source signal, the
XD500/3’s main channels will automatically
combine the left and right input signals into a
summed mono (left + right) input signal. This
can be useful to drive a center speaker.
subwooFer outPuts
The XD500/3’s single subwoofer channel is
designed to deliver power into subwoofer loads
equal to or greater than 2 ohms. It is rated for
300W into 2 ohms, 250W into 3 ohms and 200W
into 4 ohms (Continuous Power, RMS Method).
IMPORTANT
!
Subwoofer loads below 2 ohms nominal are not
recommended and may cause the amplifier
to initiate a protection mode which reduces
power output.
The XD500/3’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 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
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. If only connecting one
pair of subwoofer wires, it is not necessary to use
both sets of connections.