1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your Hertz HMD1 Marine Mono Amplifier and HMS 10 S2-LD-SW Marine Subwoofer System. Please read this manual thoroughly before attempting installation or operation to ensure proper function and safety. This system is designed for marine environments, offering high-power audio performance and durability.
2. Consignes de sécurité
Respectez toujours les consignes de sécurité suivantes afin d'éviter les blessures ou les dommages matériels :
- Alimentation: Assurer l'alimentation voltage matches the specified requirements (11-15 VDC). Incorrect voltage peut endommager le amplifier.
- Câblage : Use appropriate gauge wiring for power, ground, and speaker connections. Improper wiring can lead to overheating or electrical fire.
- Fusibles: Le amplifier is equipped with dual 30A fuses. Always replace fuses with the same type and rating. Never bypass fuses.
- Montage: Securely mount all components in a location that is protected from direct water exposure, excessive heat, and vibration. Ensure adequate ventilation for the amplifier.
- Exposition à l'eau : While designed for marine use, avoid submerging components. Ensure all connections are watertight.
- Installation professionnelle : If you are unsure about any aspect of installation, consult a qualified marine audio technician.
3. Produit terminéview
The Hertz HMD1 Marine Mono Amplifier and HMS 10 S2-LD-SW Marine Subwoofer System is engineered for robust audio performance in marine applications.
Hertz HMD1 Marine Mono Amplifier
The HMD1 is a compact, high-power mono amplifier designed to deliver consistent performance. It features a robust power output, low distortion, and a high signal-to-noise ratio, making it suitable for driving subwoofers in marine environments.

Figure 1 : Angulaire view of the Hertz HMD1 Marine Mono Amplifier, showing its compact design and heat sink fins.

Figure 2: Rear panel of the Hertz HMD1 amplifier, detailing power, speaker, and input connections, along with control switches.
Hertz HMS 10 S2-LD-SW Marine Subwoofer
The HMS 10 S2-LD-SW subwoofers are engineered for high-power, infinite-baffle operation, eliminating the need for a dedicated enclosure. They feature durable polypropylene cones with UV inhibitors, high-density flux ferrite magnets, and integrated RGB LEDs for customizable lighting effects. The white sport grilles are paintable to match your vessel's aesthetics.

Figure 3: Hertz HMS 10 S2-LD-SW Marine Subwoofer featuring a white sport grille and integrated RGB LEDs.
4. Configuration et installation
Careful installation is crucial for optimal performance and longevity of your marine audio system.
4.1 AmpMontage lifier
Choose a mounting location that is dry, well-ventilated, and protected from direct sunlight and excessive heat. Ensure there is sufficient space around the ampAérateur pour la circulation de l'air. Fixez le amplifier using appropriate fasteners to a solid surface.
4.2 Wiring Connections (HMD1 Amplifiant)
Refer to Figure 2 for connection points.
- Power (POWER - 12V): Connect the positive (+) terminal to the boat's 12V battery via a fused power cable. Connect the negative (-) terminal to a solid ground point on the boat's chassis or battery negative. Use heavy-gauge wire suitable for the current draw.
- Fuses (FUSE 2x30A): Le amplifier is protected by two 30A blade fuses. Ensure these are correctly installed.
- Speaker Out (SPEAKER OUT 1, 2): Connect your subwoofers to these terminals. The HMD1 is a mono amplifier, so both subwoofers should be wired in parallel to achieve a 1-Ohm or 2-Ohm load, depending on the subwoofer impedance. For two 2-Ohm subwoofers, wiring them in parallel will result in a 1-Ohm load.
- SPK IN / REM IN / MUTE: These terminals are for speaker-level inputs and remote turn-on/mute functions.
- PRE IN (RCA): Connect your head unit's RCA pre-out to this input for a low-level signal.
- SENSITIVITY (H, M, L): This switch adjusts the input sensitivity. Set it to match the output level of your head unit.
- ART ON/OFF: Automatic Remote Turn-on. When ON, the amplifier will turn on automatically when it detects an audio signal on the speaker-level inputs. When OFF, a remote turn-on wire is required.
- LINK ON/OFF: Used for linking multiple amplifiers. Refer to advanced wiring diagrams if using this feature.
4.3 Subwoofer Installation (HMS 10 S2-LD-SW)
The HMS 10 S2-LD-SW subwoofers are designed for infinite-baffle applications, meaning they do not require a sealed enclosure. They can be mounted directly into a panel or bulkhead, using the boat's interior volume as the 'enclosure'.
- Emplacement de montage : Choose a sturdy, flat surface with sufficient depth clearance (refer to specifications for dimensions). Ensure the mounting surface is rigid enough to prevent vibrations.
- Coupé: Carefully cut the mounting hole according to the specified diameter.
- Câblage : Connectez les bornes du caisson de basses au amplifier's speaker outputs. Ensure correct polarity (+ to + and - to -). For two 2-Ohm subwoofers, wire them in parallel to the HMD1 amplifier for a 1-Ohm load.
- Câblage des LED RGB : Connect the RGB LED wires to a compatible RGB controller (not included) for customizable lighting effects. Follow the controller's instructions for wiring.
- Installation des grilles : Secure the white sport grille over the subwoofer. The grille can be painted to match your vessel's color scheme.

Figure 4: Physical dimensions diagram for the Hertz HMS 10 S2-LD-SW Subwoofer, showing measurements A, B, C, D, and F.
5. Mode d'emploi
5.1 Mise sous/hors tension
Le amplifier will power on when a remote turn-on signal is received (either from the head unit's remote output or via the ART function if enabled). It will power off when this signal is removed.
5.2 Adjusting Sensitivity (Gain)
The SENSITIVITY switch on the HMD1 amplifier allows you to match the amplifier's input level to the output level of your head unit. Start with the switch in the 'L' (Low) position and gradually increase it to 'M' (Medium) or 'H' (High) if needed. Adjust the gain control on the amplifier (if present, not explicitly detailed in provided data) to achieve maximum clean output without distortion. It is recommended to set the head unit volume to about 75% of maximum, then adjust the amplifier gain until the sound is loud and clear without audible distortion. If distortion occurs, reduce the gain.
Contrôle des LED RVB 5.3
The integrated RGB LEDs in the HMS 10 S2-LD-SW subwoofers require an external RGB controller (not supplied) for operation. Connect the subwoofer's RGB wiring to the controller according to the controller's instructions. This allows for customization of color and lighting effects.
6. Entretien
Regular maintenance ensures the longevity and optimal performance of your marine audio system.
- Nettoyage: Nettoyez périodiquement le amplifier and subwoofers with a soft, damp cloth. Avoid using harsh chemicals or abrasive cleaners. Ensure all components are dry before operation.
- Contrôle des connexions : Annually inspect all power, ground, speaker, and signal connections for corrosion, looseness, or damage. Tighten any loose connections and clean any corrosion.
- Remplacement du fusible : Si le amplifier fails to power on, check the 30A fuses. Replace blown fuses only with fuses of the same type and rating.
- Contrôles environnementaux : Assurez-vous que amplifier's mounting area remains well-ventilated and free from obstructions. Verify that subwoofers are securely mounted and grilles are intact.
7. Dépannage
If you experience issues with your system, refer to the following common problems and solutions:
| Problème | Cause possible | Solution |
|---|---|---|
| Ample lificateur ne s'allume pas | Fusible grillé Connexion d'alimentation/de terre lâche Aucun signal de mise en marche à distance Niveau de batterie faibletage | Vérifier et remplacer les fusibles Verify and tighten all power/ground connections Check remote wire connection or ART setting Charge or check boat battery |
| No sound from subwoofers | fils de haut-parleurs débranchés Sensibilité d'entrée incorrecte L'autoradio n'envoie pas de signal. AmpAmplificateur en mode de protection | Check and secure speaker connections Adjust SENSITIVITY switch and gain Verify head unit output Check for overheating or short circuits |
| Son déformé | Gain trop élevé Signal d'entrée de mauvaise qualité Damaged speaker wire or subwoofer | Réduire ampgain de lificateur Check RCA cables and head unit output Inspect speaker wires and subwoofer cone for damage |
| Subwoofer RGB LEDs not working | Incorrect wiring to controller Contrôleur RVB défectueux Bande LED endommagée | Verify RGB wiring connections Test with a known good controller Contact support if LEDs are damaged |
8. Spécifications
Hertz HMD1 Marine Mono Amplifier
| Fonctionnalité | Spécification |
|---|---|
| Puissance de sortie (RMS) | 800 W x 1 at 2-Ohm Up to 1000 W x 1 at 1-Ohm |
| Distorsion (THD) | 0.1% |
| Rapport signal sur bruit (S/N) | 110 dBA |
| DampFacteur | 140 à 100Hz |
| Vol. d'alimentationtage | 11-15 VCC |
| Fusibles | Double 30A |
| Entrées | Pre-in RCA, Wired Speaker Inputs |
| Caractéristiques | Mute Function, Automatic Remote Turn On/Off |
| Poids de l'article | 26.9 pounds (System Weight) |
| Dimensions du colis | 19 x 15 x 9 inches (System Dimensions) |
| Numéro de modèle | HertzBDL240610-03 |
Hertz HMS 10 S2-LD-SW Marine Subwoofer
| Fonctionnalité | Spécification |
|---|---|
| Taille | 10 pouces |
| Impédance | 2 ohms |
| Power Handling (Continuous/Peak) | 250 500 W / XNUMX W |
| Bobine téléphonique | 50 mm (2 po) |
| Taille de l'aimant | 140 x 60 x 30 mm (5.51 x 2.36 x 1.18 pouces) |
| SPL Rating | 88.5 dB |
| Fs (fréquence de résonance) | 43 Hz |
| Qts (Total Q Factor) | 0.60 |
| Xmech (Excursion mécanique) | ±16.3 mm (0.64 in.) |
| Profondeur | 191 mm (7.52 po) |
| Caractéristiques | RGB LEDs, White Sport Grille (paintable), UV Inhibitors |

Figure 5: Frequency response graph for the Hertz HMS 10 S2-LD-SW Subwoofer, showing impedance (Ohm) versus frequency (Hz).
9. Informations sur la garantie
This Hertz product is covered by a Garantie fabricant d'un an from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage resulting from improper installation, accident, misuse, abuse, neglect, unauthorized modification, or normal wear and tear. Please retain your proof of purchase for warranty claims.
10. Assistance
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact Hertz customer support or your authorized Hertz dealer. Refer to the official Hertz website contenant des informations de contact et des ressources supplémentaires.