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10 | JL Audio - XD200/2v2 Owners Manual
PREOUTS
The XD200/2v2 incorporates a 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 Amplifier Inputs. This
can be useful for feeding a subwoofer amplifier
when the XD200/2v2 is being used to drive front
speaker systems.
Note: The preamp output signal is not affected by
any crossover filter selected (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.
SPEAKER OUTPUTS
The XD200/2v2’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 XD200/2v2’s outputs are 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 XD200/2v2 has been designed
for bridging of its main channel pairs without the
need for input inversion adaptors.
To bridge the XD200/2v2, 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 XD200/2v2 is bridged, it will deliver
200W x 1 into a 4 ohm load or 150W x 1 into
an 8 ohm load. Operating an XD200/2v2 into a
load lower than 4 ohms is not recommended.
A bridged XD200/2v2 requires that both
channels receive input. You must connect the
mono or stereo source signal to both the left
and right inputs of the amplifier. 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 XD200/2v2 is operating in bridged
mode, the output will be in mono (only one
channel). This mono channel can contain only
right channel information, only left channel
information, or the sum of the signals from right
and left input channels. In order to achieve one of
these options, configure the inputs 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 XD200/2v2’s inputs
you must use a “Y-Adaptor” to split the single
10


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