JL Audio NexD XDM800/8 User manual

800W 8-CHANNEL AMPLIFIER
OWNER’S MANUAL
MANUEL D’UTILISATION
MANUAL DEL PROPIETARIO
BEDIENUNGSANLEITUNG
MANUALE DEL PROPRIETARIO

2 | JL Audio® - XDM800/8 3
x1 2.5 mm
x1 x1
0.50 in
(12 mm)
0.50 in
(12 mm)

4 | JL Audio® - XDM800/8 5
CONNECTIONS
Connection Description Notes
1
+12 VDC Positive (+12V) Power Connection • 4 AWG wire (required)
• Install 80A fuse at (+) battery post
Ground Negative (GND) Ground Connection • 4 AWG wire (required)
Remote Positive (+12V) Activation Connection • 18 – 12 AWG wire capacity
• See Turn On Mode for more info
2
CH. 1 Input Left Input Signal, Black RCA
• Accepts 200mV – 4V input voltage
• See Input Mode for more info
CH. 2 Input Right Input Signal, Red RCA
CH. 3 Input Left Input Signal, Black RCA
CH. 4 Input Right Input Signal, Red RCA
CH. 5 Input Left Input Signal, Black RCA
CH. 6 Input Right Input Signal, Red RCA
CH. 7 Input Left Input Signal, Black RCA
CH. 8 Input Right Input Signal, Red RCA
3Remote Level
Control
Remote Level Controller Connection (optional)
(HD-RLC or MHD-RLC)
• Operates as an attenuator only:
Fully counter-clockwise = Level Muted
Fully clockwise = Level Unaected
4
CH. 1 (L)
Speaker
Output
(+) Positive Speaker Output CH. 1&2 Bridged (+)
• Minimum impedance load:
Stereo mode ≥2 ohms
Bridged mode ≥4 ohms
• 16 – 8 AWG wire capacity
(–) Negative Speaker Output
CH. 2 (R)
Speaker
Output
(+) Positive Speaker Output
(–) Negative Speaker Output CH. 1&2 Bridged (–)
CH. 3 (L)
Speaker
Output
(+) Positive Speaker Output CH. 3&4 Bridged (+)
(–) Negative Speaker Output
CH. 4 (R)
Speaker
Output
(+) Positive Speaker Output
(–) Negative Speaker Output CH. 3&4 Bridged (–)
CH. 5 (L)
Speaker
Output
(+) Positive Speaker Output CH. 5&6 Bridged (+)
(–) Negative Speaker Output
CH. 6 (R)
Speaker
Output
(+) Positive Speaker Output
(–) Negative Speaker Output CH. 5&6 Bridged (–)
CH. 7 (L)
Speaker
Output
(+) Positive Speaker Output CH. 7&8 Bridged (+)
(–) Negative Speaker Output
CH. 8 (R)
Speaker
Output
(+) Positive Speaker Output
(–) Negative Speaker Output CH. 7&8 Bridged (–)
1 2 3 4
INSTALLATION CONSIDERATIONS
• Installation requires appropriate tools and
safety equipment. Professional installation
is recommended.
• Before installation, turn off the audio
system and disconnect the battery
system from the audio system.
• Install in a dry, well-ventilated
location that does not interfere
with factory-installed systems.
• Do not install in the engine compartment,
any areas of extreme heat or where it will
be directly exposed to the elements.
• Before cutting or drilling, check for potential
obstacles behind mounting surfaces.
• Carefully route all system wiring away moving
parts and sharp edges; secure with cable ties
or wire clamps and use grommets and loom
where appropriate to protect from sharp edges.
SAFETY CONSIDERATIONS
• Only use this product with 12 volt, negative-
ground electrical systems. This product is
not certified or approved for use in aircraft.
• Mount this product securely to prevent
damage or injury in severe conditions.
• An appropriate fuse (or circuit breaker) at
the main power wire is vital for vehicle/vessel
safety and must be installed within 18 inches
(45 cm) of the positive battery connection.
• For ABYC and NMEA applications,
circuit protection is required within 7
inches (18 cm) of the battery, unless the
cable is in an enclosure or conduit.
• Listen to your audio system at
levels appropriate for operating
conditions and hearing safety.
EN

6 | JL Audio® - XDM800/8 7
CONTROLS
Control (Function) Setting Description
7
Input Sens.
(adjusts each channel
pair’s input stage)
Variable Use to match the source unit’s output voltage with the inputs of each pair of
amplier channels. See Appendix A for detailed information.
CH. 1&2
Filter Mode
(congures the
lter of CH. 1&2)
O Filter defeated; passes full range of frequencies present at the inputs
HP Attentuates frequencies below the CH. 1&2“Filter Freq. (Hz)”dial, at a rate of 12dB/octave
LP Attentuates frequencies above the CH. 1&2“Filter Freq. (Hz)”dial, at a rate of 12dB/octave
Filter Freq. (Hz)
(adjusts lter cuto
frequency)
Variable Use to adjust the cuto frequency of channel 1&2’s active lter,
from 50 Hz – 500 Hz / 12dB per octave
CH. 3&4
Filter Mode
(congures the
lter of CH. 3&4)
O Filter defeated; passes full range of frequencies present at the inputs
HP Attentuates frequencies below the CH. 3&4“Filter Freq. (Hz)”dial, at a rate of 12dB/octave
LP Attentuates frequencies above the CH. 3&4“Filter Freq. (Hz)”dial, at a rate of 12dB/octave
Filter Freq. (Hz)
(adjusts lter cuto
frequency)
Variable Use to adjust the cuto frequency of channel 3&4’s active lter,
from 50 Hz – 500 Hz / 12dB per octave
CH. 5&6
Filter Mode
(congures the
lter of CH. 5&6)
O Filter defeated; passes full range of frequencies present at the inputs
HP Attentuates frequencies below the CH. 5&6“Filter Freq. (Hz)”dial, at a rate of 12dB/octave
LP Attentuates frequencies above the CH. 5&6“Filter Freq. (Hz)”dial, at a rate of 12dB/octave
Filter Freq. (Hz)
(adjusts lter cuto
frequency)
Variable Use to adjust the cuto frequency of channel 5&6’s active lter,
from 50 Hz – 500 Hz / 12dB per octave
CH. 7&8
Filter Mode
(congures the
lter of CH. 7&8)
O Filter defeated; passes full range of frequencies present at the inputs
HP Attentuates frequencies below the CH. 7&8“Filter Freq. (Hz)”dial, at a rate of 12dB/octave
LP Attentuates frequencies above the CH. 7&8“Filter Freq. (Hz)”dial, at a rate of 12dB/octave
Filter Freq. (Hz)
(adjusts lter cuto
frequency)
Variable Use to adjust the cuto frequency of channel 7&8’s active lter,
from 50 Hz – 500 Hz / 12dB per octave
7
CONTROLS
Control (Function) Setting Description
5Status LED
(indicates operating
status)
Flashing
Green Amplier Powering Up, Audio Output Muted
Green On-Normal Operation, Active Audio Output
Red On-Safe Mode, Over-Temperature Condition, Audio Output Reduced
• Reverts to normal operation when temperature returns to a safe level
Amber
(yellow)
On-Safe Mode, Over-Current Condition, Audio Output Muted
• May exhibit repetitive, audible ticking or thumping noise in the output
• Inspect for speaker/wire short circuit or low impedance
LEDs O
Amplier Turns O (unexpectedly), Low-Voltage Condition
• Occurs when battery or remote turn-on voltage drops below 10V
• Reverts to normal operation when voltage rises above 11V
6
Turn On Mode
(congures
activation method)
Remote
+12V Remote Turn-On (Preferred)
• Controlled by a switched +12V circuit or turn-on
output of your source unit/OEM interface
Oset
DC Oset-Sensing (Automatic)
• Turns On by detecting the presence of small DC
signal in OEM audio outputs and turns O after
the signal is removed
• Designed for high-level
(speaker) signals only
• Detects input signal from
CH. 1 (L) only
• Using DC Oset or Signal
Sensing methods will turn the
“Remote”terminal into a +12V
turn-on output.
Signal
Signal-Sensing (Automatic)
• Turns On by detecting full-range OEM audio
signals and turns OFF after the signal is removed
(within 30 seconds)
Input Filter
(congures input
lter application)
Car Select for most installations (automotive or marine)
Boat Select if experiencing interference from high-current mechanical switches/devices
Input Mode
(congures input
signal connections)
2 Ch.
Select when using CH. 1&2 inputs only
• CH. 3, 5 & 7 will operate with CH. 1 signal
• CH. 4, 6 & 8 will operate with CH. 2 signal
4 Ch.
Select when using CH. 1&2 and CH. 5&6 inputs
• CH. 3 will operate with CH. 1 signal
• CH. 4 will operate with CH. 2 signal
• CH. 7 will operate with CH. 5 signal
• CH. 8 will operate with CH. 6 signal
8 Ch. Select when using all eight inputs
Remote Level Mode
(congures HD-RLC
operation - optional)
All Adjusts level of all channels equally
• Multiple ampliers can be controlled
from a single HD-RLC using a non-
duplex phone line splitter and multiple
phone cables.
5 - 8 Adjusts level of channels 5, 6, 7 & 8 only
7 & 8 Adjusts level of channels 7 & 8 only
6
5
EN

8 | JL Audio® - XDM800/8 9
Due to ongoing product development, all specifications are subject to change without notice.
SPECIFICATIONS
Amplier Section
Amplier Topology NexD™ Ultra-High Speed Class D
Power Supply Type Unregulated MOSFET Switching
Minimum Copper
Power/GND Wire
4 AWG
(Note: CCA/Copper Clad Aluminum wire is not recommended.)
Recommended Fuse 80 A
Rated RMS Power @ 14.4V,
<1% THD+N
75W x 8 @ 4 Ω 100W x 8 @ 2 Ω
150W x 4 @ 8 Ω Bridged 200W x 4 @ 4 Ω Bridged
Rated RMS Power @ 12.5V,
<1% THD+N
60W x 8 @ 4 Ω 90W x 8 @ 2 Ω
120W x 4 @ 8 Ω Bridged 180W x 4 @ 4 Ω Bridged
Frequency Response 12 Hz – 22 kHz (+0, -1dB)
S/N Ratio
(A-weighted, 20 Hz–20 kHz
noise bandwidth)
>104 dB (Referred to rated power),
>84 dB (Referred to 1W)
Damping Factor >150 / 50 Hz @ 4 Ω, >75 / 50 Hz @ 2 Ω
Input Section
Number of Inputs 8 (Four Stereo Pairs)
Input Type Differential-Balanced with RCA jack inputs
Input Voltage Range 200mV – 4V RMS
Signal Processing
Filter Type
CH. 1&2 CH. 3&4 CH. 5&6 CH. 7&8
Active, 12dB/octave, High-Pass or Low-Pass
(50 – 500 Hz), defeatable
Remote Level Control HD-RLC or MHD-RLC (optional). Full mute to 0 dB range.
Dimensions
L x W x H 14.73 in. x 7.09 in. x 2.05 in. (374 mm x 180 mm x 52 mm)
APPENDIX A:
Input Sensitivity Level Setting
Follow the steps below to adjust the input sensitivity of each amplifier
channel pair to achieve overall system balance.
Necessary Equipment
• Digital AC Voltmeter
• Sine-wave test tone recorded at 0 dBfs reference level in the frequency range to be amplied.
Do not use attenuated test tones (-10 dB, -20 dB, etc.).
Full range channel/amplier applications: 1 kHz
Subwoofer channel/amplier applications: 50 Hz
• Depending on your type of source unit, the sine-wave may be played via a CD, USB thumb drive, portable media player or
Bluetooth® audio source. Make sure to disable any EQ/DSP modes on your portable media player during level setting.
The Nine-Step Procedure
1. Disconnect the speaker(s) from the amplier’s speaker output connectors.
2. Turn o all processing (bass/treble, loudness, EQ, etc.) on the source unit, processors (if used) and amplier.
Set the fader control to center position and the subwoofer level control to 3/4 of maximum, if used.
3. Turn all “Input Sens.” controls all the way down.
4. Set the source unit volume to 3/4 of full volume. This will allow for reasonable gain overlap with moderate clipping at full volume.
5. Using the chart below, determine the target voltage for input sensitivity adjustment according to the nominal impedance of the
speaker system connected to the amplier outputs.
6. Verify that you have disconnected the speakers before proceeding. Play a track with an appropriate sine wave (within the
frequency range to be amplied) at 3/4 source unit volume.
7. Connect the AC voltmeter to the speaker output terminals of the amplier. If the channel pair is operating in stereo, it is only
necessary to measure one channel. If bridged, make sure you test the voltage at the correct terminals (L+ and R–).
8. Increase the“Input Sens.” control until the target voltage is observed with the voltmeter.
9. Once you have adjusted each channel section to its maximum low-distortion output level, reconnect the speaker(s). The“Input
Sens.”controls can now be adjusted downward if the amplier requires attenuation to achieve the desired system balance.
IMPORTANT!
• Do not increase any “Input Sens.” setting for any amplier channel or channel pair in the system beyond the maximum level
established during this procedure. Doing so will result in audible distortion and possible speaker damage.
• It will be necessary to re-adjust the“Input Sens.” if any equalizer boost is activated after setting the“Input Sens.”
with this procedure. This applies to any EQ boost circuit, including source unit tone controls or EQ circuits. EQ cuts will not
require re-adjustment.
Nominal
Impedance
Target AC Voltage
Stereo Bridged
8Ω 17.3 V 34.6 V
4Ω 17.3 V 28.3 V
3Ω 16.0 V not recommended
2Ω 14.1 V not recommended
EN

Printed in China XDM800/8 MAN-041123