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JL Audio xd700 Manual

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7
If you wish to send six discrete channels into
the XD700/5v2, simply use all six inputs and set
the “Input Mode” switch in the “6 Ch.” position.
The amplifier will automatically combine the
left and right “Sub Ch.” input signals to mono.
If you have only one channel of subwoofer signal
available, it is acceptable to only use one of
the “Sub Ch.” inputs, but for optimal gain, we
recommend using a Y-adaptor and feeding both
“Sub Ch.” inputs.
If you prefer to use only four channels of input
into the XD700/5v2, set the “Input Mode” switch
in the “4 Ch.” position and use the Ch 1 & 2 and
Ch 3 & 4 Inputs. In this mode, the XD700/5v2
will derive its subwoofer channel signal from a
sum of all four input signals. The bass will not
fade when the signal is faded by the head unit
from front to rear.
You may also choose to apply only two
channels of input to deliver signal to all five
amplifier channels. To do this, set the “Input
Mode” switch to “2 Ch.” and use only the inputs
to channels 1 & 2. In this mode, Channel 3 will
operate with the Channel 1 signal and Channel
4 will operate with the Channel 2 signal. The
amplifier will automatically combine the main
input signals to mono for the Subwoofer Channel.
Input Voltage Range:
A wide range of signal input voltages can
be accommodated by the XD700/5v2’s input
section (200mV – 8V). This wide range is split
up into two sub-ranges, accessible via the “Input
Voltage” switch:
“Low”: for preamp level signals
“High”: for speaker level signals
This switch affects all channels of the amplifier
equally. The “Low” position on the “Input
Voltage” switch selects an input sensitivity
range between 200mV and 2V. This means that
the “Input Sens.” rotary controls will operate
within that voltage window. If you are using
an aftermarket source unit, with conventional
preamp level outputs, this is the position you
should select.
The “High” position on the “Input Voltage”
switch selects an input sensitivity range between
800mV and 8V. This is useful for certain high-
output preamp level signals as well as speaker
level output from source units and small
amplifiers. To use speaker level sources, splice the
speaker output wires of the source unit or small
amplifier onto a pair of RCA cables or plugs,
or use the JL Audio ECS Speaker Wire to RCA
adaptor (XD-CLRAIC2-SW).
Line output converters are usually not needed
with the XD700/5v2. If you find that the output
cannot be reduced sufficiently with a direct
speaker level signal applied to the amplifier and
the “Input Voltage” switch in its “High” position,
you may use a line output converter or voltage
divider to reduce the signal level.
INPUT SENSITIVITY CONTROLS
The controls labeled “Input Sens.” located in
each channel section can be used to match the
source unit’s output voltage to the input stage of
each pair of amplifier channels for maximum
clean output. Rotating the control clockwise will
result in higher sensitivity (louder for a given
input voltage). Rotating the control counter-
clockwise will result in lower sensitivity (quieter
for a given input voltage.)
… 7 …


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