1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your JL Audio M800/8 V2 8-Channel Marine Amplifier. This amplifier is designed to deliver high-quality audio performance in marine environments, powering component speakers and subwoofers.
Please read this manual thoroughly before attempting installation or operation to ensure proper use and to prevent damage to the unit or your vessel's electrical system.
2. Safety Information
Always observe the following safety precautions:
- Power Source: Connect the amplifier only to a 12-volt DC negative-ground electrical system.
- Wiring: Ensure all wiring is properly routed and secured to prevent pinching or abrasion. Use appropriate gauge wire for power and ground connections as specified in the installation section.
- Fusing: Install an appropriate fuse or circuit breaker on the main power wire within 18 inches (45 cm) of the battery.
- Ventilation: Ensure adequate ventilation around the amplifier to prevent overheating. Do not mount in enclosed spaces without airflow.
- Water Exposure: While designed for marine use, avoid direct exposure to high-pressure water sprays or submersion.
- Professional Installation: If you are unsure about any aspect of the installation, consult a qualified marine audio professional.
3. Package Contents
Verify that all items are present in the package:
- JL Audio M800/8 V2 Marine Amplifier
- Mounting Hardware (screws, washers)
- Owner's Manual (this document)
- Connector Plugs for Power/Speaker Terminals
4. Setup and Installation
Proper installation is crucial for optimal performance and longevity of your amplifier. Follow these steps carefully:
4.1 Mounting Location
Choose a mounting location that is dry, well-ventilated, and protected from direct sunlight and excessive heat. Ensure there is sufficient space around the amplifier for air circulation and access to connections.
Figure 4.1: Angled view of the JL Audio M800/8 V2 marine amplifier.
4.2 Power and Ground Connections
Connect the amplifier to the vessel's electrical system as follows:
- +12V (Power): Connect a heavy-gauge power wire (refer to specifications for recommended gauge) from the positive terminal of the battery to the +12V input on the amplifier. Install an appropriate fuse or circuit breaker near the battery.
- GND (Ground): Connect a heavy-gauge ground wire from the GND input on the amplifier to a clean, solid metal point on the vessel's chassis or a dedicated ground bus bar. Ensure a low-resistance connection.
- REM (Remote Turn-On): Connect a remote turn-on wire from your head unit's remote output to the REM input on the amplifier. This wire signals the amplifier to turn on when the head unit is active.
Figure 4.2: Rear panel connections for power, ground, remote, and audio inputs/outputs.
4.3 Audio Input Connections
Connect your audio source (e.g., marine head unit) to the amplifier's RCA input jacks. The M800/8 V2 features 8 channels, allowing for flexible input configurations.
- RCA Inputs: Connect RCA cables from your head unit's pre-outs to the corresponding input channels (CH. 1&2, CH. 3&4, CH. 5&6, CH. 7&8) on the amplifier.
- Input Mode: Use the Input Mode switches on the control panel to select between 2-channel, 4-channel, or 8-channel input configurations, depending on your source unit's outputs.
4.4 Speaker Output Connections
Connect your marine speakers and subwoofers to the amplifier's speaker output terminals. The M800/8 V2 supports both stereo and bridged configurations.
- Speaker Terminals: Connect speaker wires to the appropriate channel outputs (CH. 1-8). Observe correct polarity (+ to + and - to -).
- Bridged Mode: For higher power output to subwoofers, channels can be bridged. Refer to the markings on the amplifier for correct bridged wiring (e.g., CH. 1&2 Bridged).
4.5 Control Panel Settings
The amplifier's control panel allows for fine-tuning of audio settings:
Figure 4.3: Amplifier control panel with various settings.
Figure 4.4: Detailed view of the control panel settings.
- Input Sens (Input Sensitivity/Gain): Adjust this control to match the output voltage of your source unit. Start with the control at minimum and slowly increase until desired volume is achieved without distortion.
- Filter Mode: Select between OFF (full range), HP (High-Pass), or LP (Low-Pass) for each channel pair.
- HP (High-Pass): Allows frequencies above the set point to pass, typically used for component speakers.
- LP (Low-Pass): Allows frequencies below the set point to pass, typically used for subwoofers.
- Filter Freq (Filter Frequency): Adjust this dial to set the cutoff frequency for the selected filter mode.
- Remote Level Control: An optional wired remote level control can be connected to the RJ45 port for convenient bass level adjustment from the listening position.
5. Operating Instructions
Once properly installed, operating the M800/8 V2 amplifier is straightforward:
- Power On/Off: The amplifier will automatically turn on when your head unit is powered on (via the remote turn-on wire) and turn off when the head unit is off.
- Audio Playback: Play audio through your head unit. Adjust the volume on your head unit and fine-tune the amplifier's gain settings for optimal sound quality without distortion.
- Indicator Lights: Observe the status indicator light on the amplifier. A solid green light indicates normal operation. Refer to the troubleshooting section if the light indicates an issue.
6. Maintenance
The JL Audio M800/8 V2 is designed for durability in marine environments, but regular maintenance can extend its lifespan:
- Cleaning: Periodically wipe the amplifier's exterior with a soft, damp cloth to remove dust and salt residue. Do not use harsh chemicals or abrasive cleaners.
- Connections: Annually inspect all power, ground, and speaker connections for corrosion or looseness. Clean and re-tighten as necessary.
- Ventilation: Ensure that the cooling fins are free from obstructions to allow proper heat dissipation.
7. Troubleshooting
If you experience issues with your amplifier, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No Power / Amplifier does not turn on | Blown fuse, loose power/ground/remote wire, faulty remote turn-on signal. | Check fuse near battery. Verify all power, ground, and remote connections are secure and have proper voltage. Test remote wire for 12V when head unit is on. |
| No Audio Output | No input signal, incorrect gain setting, speaker wires disconnected, amplifier in protect mode. | Check RCA input connections. Adjust input sensitivity. Verify speaker wire connections. Check amplifier status light for protect mode indication. |
| Distorted Sound | Gain set too high, incorrect filter settings, poor ground connection, damaged speakers. | Reduce input sensitivity (gain). Adjust filter settings (HP/LP) appropriately for speakers/subwoofers. Inspect ground connection. Test speakers with another amplifier if possible. |
| Amplifier Overheating | Insufficient ventilation, impedance too low, prolonged high-volume use. | Ensure adequate airflow around the amplifier. Check speaker impedance to ensure it meets amplifier specifications. Reduce volume or allow amplifier to cool. |
If the problem persists after attempting these solutions, contact JL Audio customer support or a qualified service technician.
8. Specifications
Key specifications for the JL Audio M800/8 V2 Marine Amplifier:
- Model: M800/8v2
- Channels: 8-Channel
- RMS Power Output: 800 W RMS (Total)
- Application: Marine Audio (Component Speakers, Subwoofers)
- Features: Waterproof design, Car Audio marine audio compatibility
- Input Type: RCA
- Filter Types: High-Pass (HP), Low-Pass (LP)
- Dimensions: (Refer to product images for visual scale, specific dimensions not provided in source data)
Figure 8.1: Top view of the JL Audio M800/8 V2 amplifier.
9. Warranty and Support
JL Audio products are designed and manufactured to the highest quality standards. For specific warranty information, please refer to the warranty card included with your product or visit the official JL Audio website.
For technical support, troubleshooting assistance, or service inquiries, please contact JL Audio customer service through their official website or authorized dealer network. Keep your purchase receipt as proof of purchase for warranty claims.
Official Website: www.jlaudio.com
