System Configurations - JL Audio NexD XD1000/5v2 Owner's Manual

SYSTEM CONFIGURATIONS

well-suited for a multitude of system configurations.
In this section, the most likely configurations for a
detail.
Once you have selected your desired
configuration, you can use the amplifier panel
switch positions for easy reference.
BI-AMPLIFIED SYSTEMS
Bi-amplified systems are defined as systems
in which separate amplifier channels drive low-
and are separately filtered to send appropriate
frequency ranges to each speaker system.
The most common application of
bi-amplification in mobile audio is to drive a
subwoofer system from one or more amplifiers or
channels and component speakers from separate
amplifiers or channels.
bi-amplified system by itself.
Bi-Amplified System with one XD1000/5v2
In this configuration, the Subwoofer Channel
with high-pass filtering.
Crossover Setup for Bi-Amplified System
with one XD1000/5v2:
Once the input sections have been configured
SUB CH."
12dB 24dB
LP Filter Mode
Filter Freq.
starting point). The "12dB" setting engages a
shallow filter slope that gradually attenuates
frequencies above the selected "Filter Freq."
setting. The "24dB" setting engages a sharper
filter slope that more aggressively attenuates
frequencies above the selected "Filter Freq."
the shallower "12dB" setting is more desirable for
a subwoofer having to fire from a trunk into the
cabin of a sedan or coupe. The sharper "24dB"
setting is typically better in a hatchback, SUV or
wagon application. Experiment to find the slope
setting that results in the smoothest subwoofer to
midbass transition.
12 | JL Audio - XD1000/5v2 Owner's Manual
Next, turn your attention to the CH 1 & 2
Controls and select x1 (high-pass) on the "HP
Filter Mode switch and select an appropriate
Filter Freq.
point). The "x1" setting means that the Filter
Freq. indicated on the dial is exactly what you are
selecting. (In the "x10" mode, the actual Filter
Frequency is ten times higher than the indicated
value. This setting is generally not used in
bi-amplified systems.)
Finally, turn your attention to the CH 3 & 4
Controls and select HP (high-pass) on the "Filter
Mode switch and select an appropriate Filter
Freq.
Tri-Amplified Systems with one XD1000/5v2
allows you to create true, tri-amplified systems by
selecting the appropriate settings described below.
In a tri-amplified configuration, the
drive a subwoofer system, in mono, with
component woofers (or mid-range speakers) in
stereo with bandpass filtering (both a high-pass
will drive high-frequency speakers (tweeters,
typically), in stereo, with high-pass filtering.
Amplified mode, set the "Input Mode" switch
in "2 Ch." mode, and apply a single set of stereo
Crossover Setup for Tri-Amplified System
with one XD1000/5v2:
SUB CH." control section
12dB 24dB (low-pass) on the
LP Filter Mode
Filter Freq.
The "12dB" setting engages a shallow filter slope
that gradually attenuates frequencies above the
selected "Filter Freq." setting. The "24dB" setting
engages a sharper filter slope that more aggressively
attenuates frequencies above the selected "Filter
Freq." setting. Neither setting is inherently
"12dB"
setting is more desirable for a subwoofer having
to fire from a trunk into the cabin of a sedan or
coupe. The sharper "24dB" setting is typically
better in a hatchback, SUV or wagon application.
Experiment to find the slope setting that results in
the smoothest subwoofer to midbass transition.
Next, turn your attention to the CH 3 &
4 Controls and select BP (bandpass) on the
"Filter Mode switch. A bandpass filter is actually
composed of two filters (one high-pass and one
low-pass), which in combination allow a defined
channels and on to the speakers. These are ideal for
actively filtered mid-bass or mid-range speakers in
automotive sound systems.
Now that you have engaged Bandpass Mode
Filter
Freq.
Filter Frequency you are adjusting with this control
is the high-pass portion of the bandpass filter. The
low-pass portion is automatically set by the tweeter
channel's "Filter Freq."
low-pass portion of the bandpass filter will always
"Filter Freq." setting.
Finally, turn your attention to the CH 1
& 2 Controls and select x10 (high-pass)
on the "HP Filter Mode switch. This switch
position multiplies the indicated "Filter
Freq."
slope for this section is fixed at 12dB/octave.
Now, select an appropriate Filter Freq.
your tweeters
Before attempting any lower frequency settings,
consult the documentation for the tweeters you
are using and make sure you will not be driving
the tweeters with frequencies lower than they are
designed to handle. JL Audio mobile component
tweeters should not be operated with Filter
Input
Sens.
pairs and the subwoofer channel using the
method shown in Appendix A (page 14),
you can fine tune filter frequencies and
attenuate either pair of channels to achieve
proper balance. For precise filter frequency
mode (one for left channel and the other for right
channel), set the "Input Mode" switches of both
amplifiers in "2 Ch." mode, and apply the left
channel signal to both the left and right inputs of
an RCA y-adaptor with one female and two male
ends. Then apply the right channel signal to both
the left and right inputs of the second amplifier's
y-adaptor with one female and two male ends.
SERVICING YOUR JL AUDIO AMPLIFIER
If your amplifier fails or malfunctions, please
return it to your authorized JL Audio dealer so
that it may be sent in to JL Audio for service.
There are no user serviceable parts or fuses inside
the amplifier. The unique nature of the circuitry
in the JL Audio amplifiers requires specifically
to service the amplifier yourself or through
unauthorized repair facilities. This will not only
void the warranty, but may result in the creation
of more problems within the amplifier.
If you have any questions about the installation or
setup of the amplifier not covered in this manual,
please contact your dealer or technical support.
JL Audio Technical Support:
(954) 443-1100
9:00 AM – 5:30 PM (Eastern Time Zone)
Monday - Friday
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