Remote Level Control (Optional) - JL Audio XD600 Owner's Manual

Tuning Hint: If you are using the XD600/6v2
to drive a subwoofer system ("LP" mode), and
component satellite speaker systems ("HP"
mode), 80 Hz is a good baseline "Filter Freq.
(Hz)" setting. After properly adjusting the "Input
Sens.", as outlined in Appendix A (page 14), you
can fine tune the "Filter Freq. (Hz)" control to
achieve the desired system frequency response.

REMOTE LEVEL CONTROL (OPTIONAL)

With the addition of the optional Remote
Level Control (HD-RLC), you can control the
volume of one, two or all three channel pairs of
the XD600/6v2 from the front of the vehicle. This
is useful for subwoofer level control, rear channel
level control, center channel level control or even
as a master volume control for the system.
The HD-RLC connects to the jack labeled
"Remote Level Control" on the Connection
Panel of the amplifier using a standard telephone
cable (supplied with the HD-RLC). If desired,
multiple XD (and HD) amplifiers can be
controlled from a single HD-RLC controller using
a single-line, four-wire phone line splitter and
multiple phone cables.
When connected to the amplifier, the HD-RLC
operates as follows: At full counter-clockwise
rotation, the audio will mute completely. At full
clockwise rotation the level will be the same as if
the HD-RLC was not connected at all. In other
words, it operates strictly as a level attenuator.
"Remote Level Mode" Switch: This switch
allows you to assign the operation of the
HD-RLC to one, two or all three pairs of
channels. In the "All" position, the HD-RLC
knob will affect all three channel pairs equally.
In the "3-6" (middle) position, only the level
of channels 3, 4, 5 and 6 will be affected by the
HD-RLC knob (channels 1 & 2 will not).
In the "5&6" position, only the level of
channels 5 and 6 will be affected by the HD-RLC
knob (channels 1 through 4 will not).
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