Bedienungsanleitung JL Audio XD600 (Seite 7 von 20) (Englisch)

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Mono Subwoofer Output

You may run a stereo or a mono signal into

the inputs of the amplifier. The amplifier’s input

section automatically sums stereo signals to mono

for the internal amplifier section. The amplifier

will operate with only one input connection

but will require an increase in input sensitivity

to overcome the loss of signal. If a mono input

signal is to be run, we recommend that you use

a “Y-adaptor” to split the mono signal into both

inputs of the amplifier. If you are feeding only

one input and using either the DC-Offset or

Signal Sensing “Turn-On Mode”, you must use

the left-channel input for the automatic turn-on

to operate.

Input Voltage Range:

A wide range of signal input voltages can

be accommodated by the XD600/1v2’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

The “Low” position on the “Input Voltage”

switch selects an input sensitivity range between

200mV and 2V. This means that the “Input Sens.”

rotary control 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 for all input channels. 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 XD600/1v2. 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 control labeled “Input Sens.” can be used

to match the source unit’s output voltage to the

input stage of the XD600/1v2 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).

To properly set the amplifier for maximum

clean output, please refer to Appendix A (page

12) in this manual. After using this procedure,

you can then adjust the “Input Sens.” levels

downward if this is required to achieve the

desired system balance.

Do not increase any “Input Sens.” setting for

any channel(s) of any amplifier in the system

beyond the maximum level established during

the procedure outlined in Appendix A (page

12). Doing so will result in audible distortion

and possible speaker damage.

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