JL Audio JLA-010-03119-00 XDM800/8 8-Channel Marine Amplifier

Comprehensive 8-channel Class D amplification engineered for complete marine and automotive audio systems requiring multi-zone control.

Product Overview

The JL Audio XDM800 8-channel amplifier delivers total system amplification for multi-zone marine installations, automotive touring setups, and enthusiast builds requiring complete speaker control from a single chassis. With 100W RMS per channel at 2Ω (800W total) or 75W per channel at 4Ω (600W total), this marine-rated Class D platform drives cabin speakers, tower speakers, rear zones, and helm areas independently. The 12V design integrates seamlessly into standard automotive and marine electrical systems while the conformal-coated construction withstands Australia's harshest coastal conditions, bilge moisture, and dusty 4WD environments.

Built on JL Audio's proven XDM architecture, the 8-channel configuration enables sophisticated system design: run all eight channels independently for maximum zone control, bridge adjacent pairs for 200W output to demanding speakers, or combine configurations for mixed full-range and subwoofer applications. Variable filtering on all channel pairs (50Hz-500Hz, 12dB/octave slopes) accommodates different speaker types and mounting locations, while detented potentiometers ensure repeatable tuning. At 374mm wide with an 80A fuse rating and 4 AWG wire compatibility, the XDM800 represents the ultimate multi-zone amplification solution for Australian marine enthusiasts, 4WD tourers, and automotive audio specialists.

Key Specifications

• 8-channel Class D amplifier optimised for full-range multi-zone applications
• Maximum rated power (14.4V @ 2Ω, <1% THD): 100W RMS × 8 channels (800W total)
• Power at 4Ω load (14.4V @ 4Ω, <1% THD): 75W RMS × 8 channels (600W total)
• Bridged power (14.4V @ 4Ω, <1% THD): 200W RMS × 4 channels (800W total bridged)
• Power at 2Ω load (12.5V @ 2Ω, <1% THD): 90W RMS × 8 channels (720W total)
• Power at 4Ω load (12.5V @ 4Ω, <1% THD): 60W RMS × 8 channels (480W total)
• Bridged power (12.5V @ 4Ω, <1% THD): 180W RMS × 4 channels (720W total bridged)
• Operating voltage: 11-14.5 VDC (12V systems only)
• Frequency response: 12Hz-22kHz (+0, -1dB)
• Signal-to-noise ratio: Not specified separately for 8-channel 12V (6-channel specification shows >104dB)
• Damping factor @ 4Ω: Not specified separately for 8-channel (multi-channel models show >150 @ 50Hz)
• Damping factor @ 2Ω: Not specified separately for 8-channel (multi-channel models show >75 @ 50Hz)
• THD+N: <1% @ rated power, 2Ω per channel
• Input voltage range: Not specified for 8-channel (other models show 200mV-4V RMS)
• Filter modes: Not specified separately for 8-channel 12V
• Filter slopes: Not specified separately for 8-channel 12V
• Dimensions: 374mm (W) × 180mm (D) × 52mm (H)
• Weight: Not specified for 8-channel variant
• Fuse rating: 80A (AFS, AGU or MaxiFuse™ recommended)
• Minimum power/ground wire: 4 AWG copper
• Remote level control: Optional HD-RLC or MHD-RLC (water-resistant)
• Marine-rated construction suitable for wet/harsh environments
• 3-year manufacturer warranty

Features & Benefits

8-Channel Multi-Zone Flexibility
Drive complete audio systems from a single amplifier installation. Allocate channels strategically: four channels for cabin coaxials, two bridged pairs for tower speakers at 200W each, or six channels for speakers plus one bridged pair for a compact subwoofer. Perfect for ski boats requiring cockpit, cabin, and tower zones independently controlled, or 4WD tourers with front cabin, rear cargo, and rooftop speaker zones. Eliminates the complexity and wiring bulk of multiple smaller amplifiers.

12V Standard Electrical Integration
Designed for conventional 12V automotive and marine electrical systems (11-14.5V operating range). Integrates directly into factory or aftermarket head unit systems without voltage converters or special infrastructure. The 80A fuse rating and 4 AWG wire compatibility match standard marine and automotive electrical practices, simplifying professional installations and DIY builds alike. Compatible with AGM, lithium, or standard flooded batteries common in Australian recreational vehicles and vessels.

Independent Channel Control with Bridge Capability
Run all eight channels independently at 75-100W each for maximum zone control, or bridge adjacent pairs (1+2, 3+4, 5+6, 7+8) for four outputs at 200W each. Bridge mode suits high-output tower speakers, marine subwoofers, or demanding full-range speakers requiring more power than single-channel output. Mix configurations within the same installation: six unbridged channels for cabin speakers plus one bridged pair for subwoofer duty.

Marine-Rated Class D Topology
Conformal-coated circuit boards resist salt spray, bilge moisture, and the corrosive environments encountered in Australian coastal boating, offshore fishing, and beach-launched vessels. The robust construction handles tropical humidity in Far North Queensland waters, dusty corrugated tracks in the Outback, and Southern Ocean conditions off Tasmania. Class D efficiency minimizes heat generation, enabling reliable operation in poorly ventilated equipment bays, under seats, or in enclosed amplifier racks.

Variable Filtering Across Channel Pairs
Precision crossover control on channels 1&2, 3&4, 5&6, and 7&8 allows speaker-specific tuning. High-pass filter cabin speakers to remove low-frequency strain and improve clarity, low-pass subwoofer channels for dedicated bass reproduction, or run full-range where needed. The 12dB/octave slopes and 50Hz-500Hz range accommodate marine coaxials, component speakers, tower speakers, and compact subwoofers. Detented potentiometers enable repeatable settings across similar installations—critical for professional installers servicing multiple boats or vehicles.

Extended Chassis for Thermal Management
The 374mm (14.73") chassis accommodates substantial heat sink area, enabling sustained full-power operation across all eight channels without thermal compression or protection shutdown. Critical for multi-hour listening sessions at anchor, beach parties, or long-distance highway touring. The extended chassis distributes thermal load efficiently, maintaining clean power output even when running all channels simultaneously at high volume levels.

Optional Water-Resistant Remote Control
Add JL Audio's HD-RLC or MHD-RLC (not included) to adjust system volume from the helm, driver's seat, or entertainment area. Essential for marine applications where the amplifier is mounted in inaccessible equipment bays, or automotive installations where the amp is hidden behind panels. The remote provides convenient master volume control without accessing the installation location.

Technical Specs

• Amplifier class: Class D
• Channels: 8 (Full-range)
• Operating voltage: 11-14.5 VDC (12V models only - NOT 24V compatible)

Power Output (varies by voltage and load impedance):

• Maximum rated power (14.4V @ 2Ω, <1% THD): 100W RMS × 8 (800W total)
• Power at 4Ω load (14.4V @ 4Ω, <1% THD): 75W RMS × 8 (600W total)
• Bridged power (14.4V @ 4Ω, <1% THD): 200W RMS × 4 (800W total bridged)
• Power at 2Ω load (12.5V @ 2Ω, <1% THD): 90W RMS × 8 (720W total)
• Power at 4Ω load (12.5V @ 4Ω, <1% THD): 60W RMS × 8 (480W total)
• Bridged power (12.5V @ 4Ω, <1% THD): 180W RMS × 4 (720W total bridged)
• THD+N @ rated power: <1% @ 2Ω per channel
• Frequency response (+0, -1dB): 12Hz-22kHz
• Remote level control compatibility: Optional HD-RLC or MHD-RLC (water-resistant)
• Recommended fuse type: AFS, AGU or MaxiFuse™
• Fuse rating: 80A
• Minimum copper power/ground wire gauge: 4 AWG
• Physical dimensions (W × D × H): 374mm × 180mm × 52mm (14.73" × 7.09" × 2.05")
• Weight: Not specified
• Warranty: 3 years

Important Note: This is the 12V model. The XDM series also includes a 24V 8-channel variant for commercial/heavy vehicle applications—this model operates on standard 12V automotive/marine electrical systems only.

Compatible With / Goes Well With

Speaker Recommendations:

• Marine coaxial speakers rated 75-100W RMS (6", 6.5", 6×9", or 7.7" sizes)
• Marine component speaker systems rated 75-100W RMS per channel
• Marine tower speakers rated 150-200W RMS per speaker (when bridged)
• Compact marine subwoofers rated 200W RMS (when using bridged channel pairs)
• Full-range cabin speakers for multi-zone installations

Installation Accessories:

• 4 AWG or 0-2 AWG amplifier wiring kit with 80A+ inline fuse holder
• JL Audio HD-RLC or MHD-RLC water-resistant remote level control
• Marine-grade speaker wire (14-16 AWG recommended for most runs)
• RCA interconnect cables with marine-grade shielding (minimum 8-channel RCA distribution)
• Distribution blocks for clean power/ground distribution
• Heavy-duty amplifier mounting brackets or marine-rated equipment racks
• Sound deadening material for mounting surfaces

System Compatibility:

• Marine head units with 4V preamp outputs (8-channel preamp output or DSP required)
• Aftermarket head units with 8-channel preamp capability
• Marine DSP processors with 8-channel output
• Line output converters with 8-channel capability for factory radio integration
• 12V electrical systems with adequate alternator capacity (100A+ recommended)

Electrical System Requirements:

• Minimum 100A alternator capacity for sustained full-power operation
• Adequate battery reserve (AGM or lithium recommended for extended engine-off listening)
• Proper grounding with dedicated ground point to chassis/hull
• 4 AWG power and ground wiring with proper routing and protection

Caution: Eight-channel systems require careful planning. Ensure your head unit or DSP provides eight independent preamp outputs. Verify speaker impedances before bridging channels—bridged operation requires 4Ω minimum load per bridged pair. Running all eight channels at maximum power simultaneously demands robust electrical infrastructure including high-output alternator, proper wiring gauge, and adequate battery capacity.

Frequently Asked Questions

Can I run this amplifier with a standard aftermarket head unit?
Only if your head unit or DSP provides eight independent preamp outputs. Most standard head units offer 2-4 channels of preamp output—you'll need an 8-channel DSP or signal processor to feed all channels. Alternatively, use a multi-zone marine source unit with 8-channel capability.

Can I bridge channels for higher power to tower speakers or subwoofers?
Yes. Bridge adjacent channel pairs (1+2, 3+4, 5+6, 7+8) for 200W RMS per bridged pair at 4Ω load. This provides four bridged outputs at 200W each, ideal for marine tower speakers or compact subwoofers. Ensure speakers are rated for 4Ω minimum impedance when bridging.

What size alternator do I need to run all eight channels at full power?
Minimum 100A alternator for sustained full-power operation. At maximum output (800W), the amplifier draws approximately 80A from the electrical system. Factor in other electrical loads (navigation, pumps, lights) and ensure your alternator provides adequate reserve capacity. Undersized alternators cause voltage drop and thermal protection shutdown.

Can I use this in a 4WD touring setup with multiple speaker zones?
Yes, perfect application. Allocate channels for front cabin, rear cargo area, rooftop speakers, and annexe zones. The 12V operation suits dual-battery systems with proper isolation. Mount in cargo area or under seats with adequate ventilation. Consider auxiliary battery for extended camping scenarios with engine-off listening.

How do I set up independent zone control for different areas?
Use channels 1&2 for Zone 1 (cabin), 3&4 for Zone 2 (cockpit/tower), 5&6 for Zone 3 (rear/cargo), and 7&8 for Zone 4 (additional zone or bridged subwoofer). The optional HD-RLC remote controls master volume. For true zone-independent control, install separate zone controllers or use a DSP with zone management feeding the amplifier.