JL Audio XDM1000/5 1000W 5-Channel System Amplifier

Safety and Installation Considerations

Safety First:

• This product is designed for 12-volt, negative-ground electrical systems only. It is not certified for aircraft use.
• Ensure secure mounting to prevent damage or injury, especially in demanding conditions.
• An appropriate fuse (or circuit breaker) must be installed within 18 inches (45 cm) of the positive battery connection for vehicle/vessel safety. 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 safe volume levels appropriate for operating conditions and hearing safety.

Installation Guidelines:

• Professional installation is recommended. Ensure you have the necessary tools and safety equipment.
• Turn off the audio system and disconnect the battery before installation.
• Install the amplifier in a dry, well-ventilated location, away from factory-installed systems.
• Avoid installation in the engine compartment, areas of extreme heat, or direct exposure to the elements.
• Before cutting or drilling, check for hidden obstacles behind mounting surfaces.
• Route all wiring away from moving parts and sharp edges. Use cable ties, clamps, grommets, and loom for protection.

Connections

The amplifier features several connection terminals:

• +12VDC: Positive (+12V) Power Connection. Requires 4 AWG wire. Install an 80A fuse at the positive battery post.
• Ground: Negative (GND) Ground Connection. Requires 4 AWG wire. Accepts 18-12 AWG wire.
• Remote: Positive (+12V) Activation Connection. See 'Turn On Mode' for details.
• Input Channels (CH. 1-4, SUB CH.): RCA inputs for left and right signals for main channels and subwoofer. Accepts 200mV-4V input voltage.
• Remote Level Control: Connection for an optional remote level controller (HD-RLC or MHD-RLC).
• Speaker Outputs: Terminals for connecting speakers for each channel (CH. 1, CH. 2, CH. 3, CH. 4, and Subwoofer). Minimum impedance loads are 2 ohms for stereo and 4 ohms for bridged mode. Accepts 16-8 AWG wire.

Diagram showing connection points on the amplifier.

Controls and Settings

The amplifier features various controls for tuning and operation:

• Status LED: Indicates amplifier status (e.g., Green for normal operation, Red for over-current, Amber for over-temperature, Off for low voltage).
• Turn On Mode: Configures the activation method (+12V Remote, DC Offset-Sensing, or Signal-Sensing).
• Input Filter: Configures the input filter application (defeatable, HP, BP).
• Input Mode: Configures input signal connections (2 Ch., 4 Ch., 6 Ch.).
• Remote Level Mode: Adjusts the level of all channels equally or only the subwoofer channel.
• Input Sens.: Adjusts the input stage sensitivity for each channel pair.
• HP Filter Mode & Freq. (CH. 1&2, CH. 3&4): High-pass filter settings to control the cutoff frequency.
• LP Filter Mode & Freq. (SUB CH.): Low-pass filter settings for the subwoofer channel.

Diagrams illustrating the amplifier's controls and their functions.

Specifications

Amplifier Section:

• Topology: NexD™ Ultra-High Speed Class D
• Power Supply: Unregulated MOSFET Switching
• Minimum Wire Gauge: 4 AWG for Power/GND
• Recommended Fuse: 80 A
• Rated RMS Power (@ 14.4V, <1% THD+N):
  • Main Channels (Stereo): 75W x 4 @ 4Ω, 100W x 4 @ 2Ω
  • Main Channels (Bridged): 200W x 2 @ 4Ω
  • Subwoofer Channel: 400W x 1 @ 4Ω, 500W x 1 @ 3Ω, 600W x 1 @ 2Ω
• Rated RMS Power (@ 12.5V, <1% THD+N):
  • Main Channels (Stereo): 60W x 4 @ 4Ω, 90W x 4 @ 2Ω
  • Main Channels (Bridged): 180W x 2 @ 4Ω
  • Subwoofer Channel: 360W x 1 @ 4Ω, 480W x 1 @ 3Ω, 600W x 1 @ 2Ω
• Frequency Response: Main Channels: 12 Hz-22 kHz (+0,-1dB); Sub Channel: 10 Hz-1 kHz (+0,-1dB)
• S/N Ratio: Main Channels: >104 dB (ref. rated power); Sub Channel: >100 dB (ref. rated power)
• Damping Factor: Main Channels: >150/50 Hz @ 4Ω; Sub Channel: >120/50 Hz @ 4Ω

Input Section:

• Number of Inputs: 6 (Three Stereo Pairs)
• Input Type: Differential-Balanced with RCA jacks
• Input Voltage Range: 200mV-4V RMS
• Filter Types: Active, 12dB/octave (High-Pass, Band-Pass, Low-Pass), defeatable.

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

This section details a nine-step procedure for setting the input sensitivity of each amplifier channel pair to achieve optimal system balance. It requires a digital AC voltmeter and a sine-wave test tone.

Key Steps:

1. Disconnect speakers from amplifier outputs.
2. Turn off all sound processing on source units and amplifiers. Set fader to center and subwoofer level to 3/4.
3. Turn all 'Input Sens.' controls fully down.
4. Set source unit volume to 3/4.
5. Determine target voltage using the provided chart based on speaker impedance.
6. Play the sine-wave test tone at 3/4 source unit volume.
7. Connect the AC voltmeter to the speaker output terminals.
8. Increase 'Input Sens.' until the target voltage is observed.
9. Reconnect speakers. Adjust 'Input Sens.' controls downward if necessary.

Important Note: Do not exceed the maximum 'Input Sens.' level established during this procedure, as it can cause audible distortion and speaker damage. Re-adjust 'Input Sens.' if EQ boost is applied after initial setup.

Table showing target AC voltages for different speaker impedances.