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10 | JL Audio - XD200/2 Owner’s Manual
SPEAKER OUTPUTS
The XD200/2’s speaker outputs are designed
to accept 16 AWG - 8 AWG wire. To connect the
speaker 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.
The XD200/2 is designed to deliver power into
speaker loads equal to or greater than 2 ohms
when using a “stereo” configuration and speaker
loads equal to or greater than 4 ohms when using a
“bridged” configuration.
Speaker loads below 2 ohms nominal per
channel (or 4 ohms bridged) are not
recommended and may cause the amplifier
to initiate a protection mode which reduces
power output.
BRIDGING CONSIDERATIONS
Bridging is the practice of combining the
output of two amplifier channels to drive a single
load. When bridged, each channel produces
signals of equal magnitude, but opposite polarity.
The combined output of the two channels
provides twice the output voltage available from
a single channel. The XD200/2 has been designed
for bridging of its channel pair without the need
for input inversion adaptors.
To bridge the XD200/2, use the “Left +” and
“Right –” speaker connectors only (the
“Left –” and “Right +” remain unused). When
bridged, the amplifier will deliver optimum
power into a 4 ohm load.
When the XD200/2 is bridged, it
will deliver 200W x 1 into a 4 ohm load or
150W x 1 into an 8 ohm load. Operating a
bridged XD200/2 into a load lower than 4
ohms is not recommended. Because a bridged
pair of channels requires that both channels
receive input, you need to connect both left
and right inputs to the source unit. Connection
of only one input will result in reduced power
output, increased distortion and can cause
the amplifier to overheat. Do not do this!
When the XD200/2 is operating in bridged
mode, the output will be in mono (only one
channel). This mono channel can contain right
channel only information, left channel only
information or the sum of the information from
both the right and left channels. In order to
achieve one of these options, configure the inputs
to that pair of channels in one of these two ways:
1) Left Channel Only or Right Channel Only
Information: If you wish to send a left-only
or right-only signal to the XD200/2, use a
“Y-Adaptor” to split the single channel signal
into both left and right RCA inputs. This
option is useful when using one XD200/2
to drive left channel speakers only and the
another XD200/2 to drive right channel
speakers only.
2) Left + Right Channel Information:
When bridged and fed by a stereo input,
the XD200/2’s channels will automatically
combine the left a nd right channels into
a summed mono (left + right) channel.
This option is useful when using a bridged
XD200/2 to drive a subwoofer system
or a summed mono center channel.