1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your Hertz Mille Legend Series ML-Power-1 D-Class Mono Amplifier and ML 2000.3 8" Subwoofer bundle. Please read this manual thoroughly before attempting installation or operation to ensure optimal performance and safety.
The Hertz Mille Legend Series components are designed to deliver high-fidelity audio performance in automotive environments. This bundle combines a powerful mono amplifier with a high-performance subwoofer to enhance your vehicle's audio system.
2. Safety Information
Always observe the following safety precautions:
- Professional Installation Recommended: Installation of car audio components can be complex. It is highly recommended that a qualified professional perform the installation.
- Disconnect Battery: Before starting any installation, disconnect the vehicle's negative battery terminal to prevent electrical shorts and damage.
- Proper Wiring: Use appropriate gauge wiring for power, ground, and speaker connections as specified by the manufacturer. Incorrect wiring can lead to overheating, fire, or component failure.
- Secure Mounting: Ensure all components are securely mounted to prevent them from becoming projectiles in the event of a sudden stop or collision.
- Avoid Obstruction: Do not install components where they might obstruct vehicle operation, airbags, or other safety features.
- Ventilation: Ensure adequate ventilation for the amplifier to prevent overheating. Do not cover the amplifier's heat sink.
- Volume Levels: Prolonged exposure to high volume levels can cause permanent hearing damage. Adjust volume responsibly.
3. Package Contents
Verify that all items are present in your package:
- 1x Hertz Mille Legend Series ML-20003 8 inch (200mm) 700 Watt RMS Subwoofer
- 1x Hertz Mille Legend Series ML-Power-1 D-Class Mono Bass Amplifier
- User Manual (this document)
- Mounting hardware (specific to each component, refer to individual component manuals if provided separately)
4. Product Overview
4.1 Hertz Mille Legend Series ML-20003 Subwoofer
The ML-20003 subwoofer is engineered for high performance with an Exponential V-cone and pressed-pulp cone for superior rigidity and accurate bass reproduction. Its compact size and anti-resonant aluminum alloy basket facilitate easy installation, particularly in sealed box applications.
Image: Front view of the Hertz Mille Legend Series ML-20003 8-inch Subwoofer, showcasing its cone and surround.
Image: Side view of the Hertz Mille Legend Series ML-20003 8-inch Subwoofer, highlighting the robust magnet structure and basket design.
4.2 Hertz Mille Legend Series ML-Power-1 Amplifier
The ML-Power-1 amplifier features Advanced D-Class Technology, designed for efficient power delivery and pure audio reproduction. Its robust heat sink design ensures stable operation and constant full power output without overheating, even under demanding conditions. The amplifier offers flexible filter combinations and an adjustable slope Lo-Pass filter for precise audio tuning.
Image: Top view of the Hertz Mille Legend Series ML-Power-1 D-Class Mono Amplifier, showing its sleek design and branding.
Image: Close-up view of the input and output terminals on the Hertz Mille Legend Series ML-Power-1 D-Class Mono Amplifier.
5. Setup & Installation
This section provides general guidelines. Always refer to the detailed wiring diagrams and specific instructions provided with each component for precise installation.
5.1 General Installation Considerations
- Power Source: Connect the amplifier directly to the vehicle's battery using a fused power cable of appropriate gauge.
- Ground Connection: Ensure a solid, short ground connection to the vehicle's chassis. The ground point should be free of paint and corrosion.
- Remote Turn-On: Connect the amplifier's remote turn-on terminal to your head unit's remote output.
- Signal Input: Use high-quality RCA cables for low-level input from your head unit or a speaker-level input converter if your head unit lacks RCA outputs.
- Speaker Wiring: Connect the subwoofer to the amplifier's speaker output terminals using appropriate gauge speaker wire.
5.2 ML-20003 Subwoofer Installation
The ML-20003 subwoofer is designed for optimal performance in a sealed enclosure. Consult a car audio professional or specific enclosure design guides for recommended box volumes and dimensions. Ensure the subwoofer is securely mounted within the enclosure and the enclosure is firmly fixed within the vehicle.
5.3 ML-Power-1 Amplifier Installation
Mount the amplifier in a location that allows for adequate airflow around its heat sink. Avoid mounting in enclosed spaces without ventilation. Ensure all connections are tight and properly insulated to prevent short circuits.
Image: Side view of the Hertz Mille Legend Series ML-Power-1 D-Class Mono Amplifier, showing the heat sink fins crucial for thermal management.
6. Operating Instructions
Once installed, proper configuration of the amplifier is crucial for optimal sound quality and system longevity.
6.1 Initial Power-Up
After all connections are made and verified, reconnect the vehicle's negative battery terminal. Turn on your head unit. The amplifier should power on, indicated by an LED indicator.
6.2 Gain Adjustment
The gain control on the ML-Power-1 amplifier matches the input sensitivity to the output voltage of your head unit. This is not a volume control. Set the head unit volume to about 75% of its maximum. Slowly increase the amplifier's gain until you hear distortion, then back it off slightly. This ensures the amplifier receives a clean signal without clipping.
6.3 Crossover Settings
The ML-Power-1 amplifier features an adjustable Lo-Pass filter. This filter allows only frequencies below a set point to pass through to the subwoofer. Typically, a subwoofer's low-pass filter is set between 60 Hz and 100 Hz, depending on your other speakers and personal preference. Experiment with the setting to achieve a seamless blend with your main speakers.
Image: Close-up of the control panel on the Hertz Mille Legend Series ML-Power-1 D-Class Mono Amplifier, showing gain and crossover adjustment knobs.
7. Maintenance
These components require minimal maintenance:
- Cleaning: Use a soft, dry cloth to clean the exterior surfaces of the amplifier and subwoofer. Do not use harsh chemicals or abrasive cleaners.
- Inspection: Periodically check all wiring connections for tightness and signs of corrosion.
- Ventilation: Ensure the amplifier's heat sink remains free of dust and debris to maintain proper cooling.
8. Troubleshooting
If you encounter issues, refer to the following common troubleshooting steps:
- No Power: Check the main fuse at the battery, the amplifier's fuse, and all power and ground connections. Verify the remote turn-on wire is receiving 12V when the head unit is on.
- No Sound: Check all RCA and speaker wire connections. Ensure the head unit is sending a signal. Verify amplifier gain settings.
- Distorted Sound: Reduce the amplifier's gain setting. Check for proper crossover settings. Ensure speaker wires are not shorted.
- Amplifier Overheating: Ensure adequate ventilation around the amplifier. Check speaker impedance to ensure it matches the amplifier's capabilities.
- Subwoofer Not Moving: Check speaker wire connections at both the subwoofer and amplifier. Verify amplifier is receiving power and signal.
If problems persist after performing these checks, contact a qualified car audio technician or Hertz customer support.
9. Specifications
9.1 ML-20003 Subwoofer Specifications
| Feature | Specification |
|---|---|
| Size | 200mm (8") |
| Power Handling (RMS) | 700W |
| Power Handling (Peak) | 1400W |
| Impedance | 4 ohms |
| Frequency Response | 30-600 Hz |
| Sensitivity | 86 dB SPL |
| Cone Material | Pressed-pulp with Exponential V-cone |
| Basket | Anti-resonant aluminum alloy |
9.2 ML-Power-1 Amplifier Specifications
| Feature | Specification |
|---|---|
| Amplifier Class | D-Class (Advanced D-Class Technology) |
| Power Output (RMS @ 2 Ohm) | 1000W x 1 |
| Power Supply Voltage | 11-15VDC |
| Idling Current | 2A |
| Consumption @ 1Ω | 83.5A |
| THD (1 kHz @ 4Ω) | 0.08% |
| Bandwidth (-3 dB) | 18-500 Hz |
| S/N Ratio (A-weighted) | 105 dB |
| Damping Factor (100 Hz @ 4Ω) | 100 |
| Pre-In Sensitivity | 0.2-5V RMS |
| Pre-In Impedance | 15kΩ |
| Speaker-In Sensitivity | 0.8-20V RMS |
| Speaker-In Impedance | 470Ω |
| Filter Type | Lo-Pass (Adjustable Slope) |
10. Warranty Information
This product is covered by a 1-Year Manufacturer Warranty. This warranty typically covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims. For specific terms and conditions, refer to the warranty documentation included with your product or contact Hertz customer support.
11. Support & Contact
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact Hertz customer support or visit the official Hertz website. You may also consult with the authorized dealer from whom you purchased this product.
Manufacturer: Hertz
Model Number: HertzBDL241017-06 (Bundle SKU)
ASIN: B0DKPL6RT5
