XDM8008 - Receiver JL Audio - Free user manual and instructions
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| Product Type | 8-channel audio amplifier receiver |
| Brand | JL Audio |
| Model | XDM8008 |
| Amplifier Topology | Ultra-fast NexD™ Class D |
| Power Supply | 12 V DC (negative ground 12 V electrical system) |
| Recommended Fuse | 80 A (installed within 45 cm of battery) |
| Nominal RMS Power (14.4 V, <1% THD+N) | 75 W x 8 @ 4 Ω, 100 W x 8 @ 2 Ω, 150 W x 4 bridged @ 8 Ω, 200 W x 4 bridged @ 4 Ω |
| Nominal RMS Power (12.5 V, <1% THD+N) | 60 W x 8 @ 4 Ω, 90 W x 8 @ 2 Ω, 120 W x 4 bridged @ 8 Ω, 180 W x 4 bridged @ 4 Ω |
| Frequency Response | 12 Hz – 22 kHz (+0/-1 dB) |
| Signal-to-Noise Ratio (A-weighted, 20 Hz-20 kHz) | > 104 dB ref. rated power, > 84 dB ref. 1 W |
| Damping Factor | > 150 @ 50 Hz / 4 Ω, > 75 @ 50 Hz / 2 Ω |
| Number of Inputs | 8 (four stereo pairs, RCA) |
| Input Voltage Range | 200 mV – 4 V RMS |
| Active Filters | 4 independent filters (channels 1-2, 3-4, 5-6, 7-8): high-pass, low-pass, 50-500 Hz, 12 dB/octave, defeatable |
| Input Modes | 2-channel, 4-channel, 8-channel |
| Turn-On Modes | Remote (+12 V), DC offset sensing, signal sensing |
| Remote Level Control | HD-RLC or MHD-RLC (optional) |
| Dimensions (L x W x H) | 374 mm x 180 mm x 52 mm |
| Safety | Water resistant (do not submerge), professional installation recommended, fuse mandatory |
| Care and Cleaning | Avoid immersion and high-pressure water jets. Clean with a soft, dry cloth. |
Frequently Asked Questions - XDM8008 JL Audio
How to install the amplifier fuse?
Install an appropriate fuse (or circuit breaker) within 45 cm (18 in) of the positive battery connection. For ABYC/NMEA applications, protection must be within 18 cm (7 in) of the battery, unless the cable is in a sheath or conduit.
What is the maximum output power?
At 14.4 V, RMS power is 75 W x 8 @ 4 Ω, 100 W x 8 @ 2 Ω, 150 W x 4 bridged @ 8 Ω, and 200 W x 4 bridged @ 4 Ω (with <1% THD+N).
How to adjust the input sensitivity (Input Sens.)?
Disconnect the speakers. Set the source volume to 3/4. Use an AC voltmeter and a sine wave (1 kHz for full-range, 50 Hz for subwoofer). Increase Input Sens. until the target voltage indicated in the appendix A table.
What types of filters are available and how to configure them?
Each channel pair (1-2, 3-4, 5-6, 7-8) has an adjustable active filter: Off (full range), HP (high-pass, attenuates low frequencies), LP (low-pass, attenuates high frequencies). The cutoff frequency is variable from 50 to 500 Hz with a slope of 12 dB/octave.
How to configure the input mode (Input Mode)?
Depending on the number of inputs used: 2 Ch. uses only inputs 1 and 2 (channels 3,5,7 follow channel 1; 4,6,8 follow channel 2). 4 Ch. uses inputs 1-2 and 5-6. 8 Ch. uses all 8 inputs independently.
What to do if the status LED turns red?
The red LED indicates a protected mode is active (overheating or short circuit). In case of overheating, audio output is reduced until temperature returns to normal. In case of short circuit, output is shut off; check speaker impedance and connections.
How to use the remote level control?
Connect the optional HD-RLC or MHD-RLC controller to the provided jack. It works as an attenuator: turned fully counterclockwise, the level is muted; turned clockwise, the level is unaffected.
What power supply voltage is required?
The amplifier operates on a negative ground 12 V electrical system. The battery voltage or remote turn-on voltage must not drop below 10 V, otherwise the amplifier will shut off.
Can I use this product in a boat?
Yes, the product is water resistant and can be used in marine environments. Select the 'Boat' input mode on the input filter in case of interference with mechanical devices.
How to connect speakers in bridged mode?
For a bridged channel pair, connect the speaker between the positive terminal of the left channel and the negative terminal of the right channel (e.g., CH.1+ and CH.2-). The minimum load impedance in bridged mode is 4 Ω.
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USER MANUAL XDM8008 JL Audio
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Front view of a black industrial fan or vent with ventilation grilles and a small logo on the side (no visible text or symbols)XDM800/8
800W 8-CHANNEL AMPLIFIER
OWNER'S MANUAL MANUEL D'UTILISATION MANUAL DEL PROPIETARIO BEDIENUNGSANLEITUNG MANUALE DEL PROPRIETARIO
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Technical line drawing of a computer rack with multiple ports and connectors (no text or symbols)
INSTALLATION CONSIDERATIONS
• Installation requires appropriate tools and safety equipment. Professional installation is recommended.
• This product is water-resistant. Do not submerge or subject to high-pressure water spray.
- Before installation, turn off the audio system and disconnect the battery system from the audio system.
- When possible, install in a dry, well-ventilated location that does not interfere with factory-installed systems. If a dry environment is not available, a location that is not exposed to heavy splashing may be used.
- 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.
CONNECTIONS
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Back panel of a network equipment chassis showing ports, connectors, and indicator lights (no readable text or symbols)| 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 Output 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 | |||||
| 3 | Remote Level Control | Remote Level Controller Connection (optional)(HD-RLC or MHD-RLC) | • Operates as an attenuator only:Fully counter clockwise = Level MutedFully clockwise = Level Unaffected | ||
| 4 | CH. 1 (L)SpeakerOutput | ⊕ | (+) Positive Speaker Output CH | 1&2 Bridged (+) | • Minimum impedance load:Sterep mode >2 ohmsBridged mode ≥4 ohms• 16 - 8 AWG wire capacity |
| ⊖ | ( ) Negative Speaker Output | ||||
| CH. 2 (R)SpeakerOutput | ⊕ | (+) Positive Speaker Output | |||
| ⊖ | (-) Negative Speaker Output CH | 1&2 Bridged (-) | |||
| CH. 3 (L)SpeakerOutput | ⊕ | (+) Positive Speaker Output CH | 3&4 Bridged (+) | ||
| ⊖ | ( ) Negative Speaker Output | ||||
| CH. 4 (R)SpeakerOutput | ⊕ | (+) Positive Speaker Output | |||
| ⊖ | (-) Negative Speaker Output CH | 3&4 Bridged (-) | |||
| CH. 5 (L)SpeakerOutput | ⊕ | (+) Positive Speaker Output CH | 5&6 Bridged (+) | ||
| ⊖ | (-) Negative Speaker Output | ||||
| CH. 6 (R)SpeakerOutput | ⊕ | (+) Positive Speaker Output | |||
| ⊖ | (-) Negative Speaker Output CH | 5&6 Bridged (-) | |||
| CH. 7 (L)SpeakerOutput | ⊕ | (+) Positive Speaker Output CH | 7&8 Bridged (+) | ||
| ⊖ | (-) Negative Speaker Output | ||||
| CH. 8 (R)SpeakerOutput | ⊕ | (+) Positive Speaker Output | |||
| ⊖ | (-) Negative Speaker Output CH | 7&8 Bridged (-) | |||
CONTROLS
| Control (Function) Setting Description | |||
| 5 | Status LED(indicatesoperating status) | Flashing Green | Amplifier Powering Up, Audio Output Muted |
| Green On-Normal Operation, Active Audio Output | |||
| Red | On-Safe Mode, Over-Temperature Condition, Audio Output ReducedReverts to normal operation when temperature returns to a safe level | ||
| Amber(yellow) | On Safe Mode, Over Current Condition, Audio Output MutedMay exhibit repetitive, audible ticking or thumping noise in the outputInspect for speaker/wire short circuit or low impedance | ||
| LEDs Off | Amplifier Turns Off (unexpectedly), Low Voltage ConditionOccurs when battery or remote turn-on voltage drops below 10VReverts to normal operation when voltage rises above 11V | ||
| 6 | Turn On Mode(configuresactivation method) | Remote | +12V Remote Turn-On (Preferred)Controlled by a switched +12V circuit or turn on output of your source unit/OEM interface |
| Offset | DC Offset Sensing (Automatic)Turns On by detecting the presence of small DC signal in OEM audio outputs and turns Off after the signal is removed | ||
| 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(configuresinputfilter application) | Car Select for most installations (automotive or marine) | ||
| Boot Select if experiencing interference from high-current mechanical switches/devices | |||
| Input Mode(configuresinputsignal connections) | 2 Ch. | Select when using CH. 1&2 inputs onlyCH. 3, 5 & 7 will operate with CH. 1 signalCH. 4, 6 & 8 will operate with CH. 2 signal | |
| 4 Ch. | Select when using CH. 1&2 and CH. S&S inputsCH. 3 will operate with CH. 1 signalCH. 4 will operate with CH. 2 signalCH. 7 will operate with CH. 5 signalCH. 8 will operate with CH. 6 signal | ||
| 8 Ch. Select when using all eight inputs | |||
| Remote Level Mode(configuresHD-RLCoperation -optional) | All Adjusts level of all channels equally | ||
| 5 - 8 Adjusts level of channels 5, 6, 7 & 8 only | |||
| 7 & 8 Adjusts level of channels 7 & 8 only | |||
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 amplifier channels. See Appendix A for detailed information. |
| Filter Mode(configuesthe filter of CH, 1&2) | Off Filter defeated; passes full range of frequencies present at the inputs | ||
| HP | Attenuates frequencies below the CH, 1&2 "Filter Freq. (Hz)" dial, at a rate of 12dB/octave | ||
| LP | Attenuates frequencies above the CH, 1&2 "Filter Freq. (Hz)" dial, at a rate of 12dB/octave | ||
| Filter Freq. (Hz)( adjusts filter cutoff frequency) | Variable | Use to adjust the cutoff frequency of channel 1&2's active filter, from 50 Hz - 500 Hz / 12dB per octave | |
| Filter Mode(configuesthe filter of CH, 3&4) | Off Filter defeated; passes full range of frequencies present at the inputs | ||
| HP | Attenuates frequencies below the CH, 3&4 "Filter Freq. (Hz)" dial, at a rate of 12dB/octave | ||
| LP | Attenuates frequencies above the CH, 3&4 "Filter Freq. (Hz)" dial, at a rate of 12dB/octave | ||
| Filter Freq. (Hz)( adjusts filter cutoff frequency) | Variable | Use to adjust the cutoff frequency of channel 3&4's active filter, from 50 Hz - 500 Hz / 12dB per octave | |
| Filter Mode(configuesthe filter of CH, 5&6) | Off Filter defeated; passes full range of frequencies present at the inputs | ||
| HP | Attenuates frequencies below the CH, 5&6 "Filter Freq. (Hz)" dial, at a rate of 12dB/octave | ||
| LP | Attenuates frequencies above the CH, 5&6 "Filter Freq. (Hz)" dial, at a rate of 12dB/octave | ||
| Filter Freq. (Hz)( adjusts filter cutoff frequency) | Variable | Use to adjust the cutoff frequency of channel 5&6's active filter, from 50 Hz - 500 Hz / 12dB per octave | |
| Filter Mode(configuesthe filter of CH, 7&8) | Off Filter defeated; passes full range of frequencies present at the inputs | ||
| HP | Attenuates frequencies below the CH, 7&8 "Filter Freq. (Hz)" dial, at a rate of 12dB/octave | ||
| LP | Attenuates frequencies above the CH, 7&8 "Filter Freq. (Hz)" dial, at a rate of 12dB/octave | ||
| Filter Freq. (Hz)( adjustsfiltercutoff frequency) | Variable | Use to adjust the cutoff frequency of channel 7&8's active filter, from 50 Hz - 500 Hz / 12dB per octave | |
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 amplified.Do not use attenuated test tones (-10 dB, -20 dB, etc.).Full range channel/amplifier applications: 1 kHzSubwoofer channel/amplifier 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 amplifier's speaker output connectors. |
| 2. Turn off all processing (bass/treble, loudness, EQ, etc.) on the source unit, processors (if used), and amplifier. 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 amplifier 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 amplified) at 3/4 source unit volume. |
| 7. Connect the AC voltmeter to the speaker output terminals of the amplifier. 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 (I+ 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 amplifier requires attenuation to achieve the desired system balance. |
| IMPORTANT! |
| • Do not increase any "Input Sens." setting for any amplifier 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 | 30.6 V |
| 4Ω | 17.3 V | 28.3 V |
| 3Ω | 16.0 V | not recommended |
| 2Ω | 14.1 V | not recommended |
SPECIFICATIONS
| Amplifier Section | ||||
| Amplifier Topology | NexDTM 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 | 2 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) | |||