1. Introduction
This manual provides detailed instructions for the proper installation, operation, and maintenance of your Gravity G3-12D4 12-inch car audio subwoofer and Gravity WZ3000.1D Class D amplifier, along with the included 4-gauge amplifier installation kit. Please read this manual thoroughly before beginning installation to ensure correct setup and optimal performance.
2. Consignes de sécurité
Respectez toujours les consignes de sécurité suivantes lors de l'installation et du fonctionnement :
- Disconnect the vehicle's negative battery terminal before any wiring to prevent electrical shorts.
- Ensure all wiring is properly routed and secured to prevent damage from sharp edges or moving parts.
- Use appropriate gauge wiring as specified in this manual to handle current loads and prevent overheating.
- Install fuses at the battery and near the amplifier as instructed to protect against power surges.
- Avoid mounting components in locations that obstruct vehicle operation or safety features.
- Do not expose components to excessive moisture or extreme temperatures.
- Seek professional assistance if you are unsure about any installation steps.
3. Contenu du colis
Vérifiez que tous les éléments sont présents dans votre colis :
- Gravity G3-12D4 12-inch Car Audio Subwoofer
- Gravity WZ3000.1D Class D Amplifier
- Calibre 4 AmpKit d'installation d'amplificateur, comprenant :
- 17 ft. 4 Gauge Power Cable
- 3 ft. 4 Gauge Ground Cable
- Inline AGU Fuse Holder with 80A + 100A Fuses
- 17 ft. Double Shielded RCA Cable
- 17 ft. 18 Gauge Turn-On Cable
- 20 ft. 16 Gauge Speaker Wire
- All necessary accessories and terminals
- Bouton de commande des basses à distance
4. caractéristiques du produit
Gravity G3-12D4 Subwoofer
- Dual 4 Ohm Voice Coil Configuration
- Competition Grade Pressed Paper Cone
- Mousse haute densité
- Système de refroidissement à flux d'air avancé
Gravity WZ3000.1D Amplifier
- Class D MOSFET Power Amplifier
- Stable at 1 Ohm, 2 Ohm, and 4 Ohm loads
- High and Low Level Inputs
- Variable Low Pass Crossover (LPF)
- Amplification variable des basses
- Filtre subsonique
Calibre 4 AmpKit d'installation de lifier
- High Quality Thick 4 Gauge Power and Ground Cables
- Inline AGU Fuse Holder with multiple fuses for protection
- True Sound Double Shielded RCA Cable for clear signal transmission
- Complete set of accessories and terminals for a professional installation
5. Configuration et installation
Proper installation is crucial for performance and safety. If you are not confident in your ability to install this system, please consult a professional installer.
5.1. Montage du caisson de basses
The G3-12D4 subwoofer requires a suitable enclosure (not included) for optimal performance. Ensure the enclosure is properly sealed and sized according to subwoofer specifications. Mount the subwoofer securely to the enclosure using appropriate screws, ensuring a tight seal around the mounting flange.
Image : Avant view of the Gravity G3-12D4 12-inch subwoofer, showing the black cone with a red Gravity logo and red stitching on the foam surround.
Image : Arrière view of the Gravity G3-12D4 12-inch subwoofer, displaying the magnet structure and speaker terminals.
5.2. Montage du Amplifier
Select a mounting location for the WZ3000.1D amplifier that is dry, well-ventilated, and protected from physical damage. Common locations include under a seat, in the trunk, or mounted to a custom amplifier rack. Ensure there is sufficient airflow around the ampAmplificateur pour le refroidissement. Fixez le amplifier firmly using screws.
Image : Côté view of the Gravity WZ3000.1D amplifier, showing the heat sink fins for cooling.
5.3. Câblage du système
Follow these steps carefully for wiring the amplifier and subwoofer:
- Power Cable (Red 4 Gauge): Run the 17 ft. 4 gauge power cable from the vehicle's positive battery terminal to the amplifier location. Install the inline AGU fuse holder within 18 inches (45 cm) of the battery. Do not insert the fuse until all wiring is complete.
- Ground Cable (Black 4 Gauge): Connect the 3 ft. 4 gauge ground cable from the amplifier's ground terminal to a clean, unpainted metal surface on the vehicle chassis. Ensure a solid, low-resistance connection. The ground point should be as short as possible.
- Remote Turn-On Cable (Blue 18 Gauge): Connect the 17 ft. 18 gauge turn-on cable from the amplifier's REM terminal to the remote turn-on output of your head unit. This cable signals the ampL'amplificateur peut être allumé et éteint avec l'unité principale.
- RCA Signal Cables: Connect the 17 ft. double shielded RCA cable from the RCA outputs of your head unit to the RCA INPUTs on the WZ3000.1D amplifier.
- Speaker Wiring (16 Gauge): Connect the 20 ft. 16 gauge speaker wire from the amplifier's speaker output terminals to the G3-12D4 subwoofer. Ensure correct polarity (+ to + and - to -). For a single G3-12D4 (dual 4-ohm voice coils), you can wire the voice coils in parallel for a 2-ohm load or in series for an 8-ohm load. The WZ3000.1D amplifier is stable down to 1 ohm, so a 2-ohm parallel configuration is recommended for maximum power output.
- Contrôle des basses à distance : Connect the remote bass control knob to the dedicated REMOTE port on the amplifier. Mount the knob in an accessible location for easy adjustment.
Image: Front panel of the Gravity WZ3000.1D amplifier, displaying RCA inputs, remote control port, and various adjustment knobs.
Image: Rear panel of the Gravity WZ3000.1D amplifier, showing the power input terminals (+12V, GND, REM) and speaker output terminals.
Image: The remote bass control knob, used for adjusting subwoofer output level from the driver's seat.
5.4. Connexion finale
Once all wiring is securely connected and checked for shorts, insert the appropriate fuse (80A or 100A, depending on your system's power draw) into the inline AGU fuse holder near the battery. Reconnect the vehicle's negative battery terminal.
6. Mode d'emploi
After installation, power on your head unit. The amplifier should turn on automatically (indicated by a power LED). Adjust the amplifier settings as follows:
- GAIN (Niveau d'entrée) : Start with the GAIN control at minimum. Play a familiar track with strong bass at about 75% of your head unit's maximum volume. Slowly increase the GAIN until you hear distortion, then back off slightly. This sets the ampRéglez la sensibilité d'entrée de l'amplificateur pour qu'elle corresponde à la sortie de votre autoradio.
- LPF (filtre passe-bas) : This control filters out high frequencies, allowing only low frequencies to pass to the subwoofer. Set the LPF between 40 Hz and 180 Hz. A common starting point is 80 Hz, but adjust to blend smoothly with your main speakers.
- SUBSONIC Filter: This filter removes extremely low frequencies below the audible range that can cause damage to the subwoofer. Set it between 0 Hz and 50 Hz. A setting around 25-30 Hz is often suitable for ported enclosures, while sealed enclosures may not require it as much.
- FRÉQUENCE D'AGILATION DES BASSES : This selects the frequency at which the bass boost will be applied. Adjust this to enhance a specific bass frequency range.
- RENFORCEMENT DES BASSES: This control increases the output level at the selected bass boost frequency (0-12 dB). Use sparingly to avoid distortion and potential speaker damage.
- Contrôle des basses à distance : This knob allows you to adjust the subwoofer's output level conveniently from your listening position without affecting other ampparamètres de lifier.
7. Entretien
To ensure longevity and optimal performance of your car audio system:
- Vérifiez régulièrement le serrage et l'absence de corrosion de tous les branchements électriques.
- Gardez le amplifier and subwoofer free from dust and debris. Use a soft, dry cloth for cleaning.
- Assurez-vous que ampLes ailettes de refroidissement de l'amplificateur ne sont pas obstruées afin d'éviter toute surchauffe.
- Avoid exposing the subwoofer cone to direct sunlight for extended periods, as UV rays can degrade materials.
8. Dépannage
En cas de problème, veuillez consulter la liste des problèmes courants et leurs solutions ci-dessous :
| Problème | Cause possible | Solution |
|---|---|---|
| Pas de courant / Ample lificateur ne s'allume pas | Fusible grillé Mauvaise alimentation ou connexion à la terre Aucun signal de mise en marche à distance | Check and replace fuse in fuse holder Vérifiez que toutes les connexions d'alimentation et de terre sont sécurisées. Vérifiez la connexion du câble de commande à distance à l'unité principale et amplifier |
| Aucun son provenant du caisson de basses | Câbles RCA déconnectés ou défectueux Câbles des haut-parleurs déconnectés ou en court-circuit AmpGain de l'amplificateur trop faible Volume de l'autoradio trop faible | Vérifier les connexions RCA Vérifiez les connexions des câbles des haut-parleurs et recherchez les courts-circuits. Ajuster ampgain de lificateur Augmenter le volume de l'unité de tête |
| Son déformé | Gain trop élevé Haut-parleur endommagé ou amplifier Réglages LPF ou Bass Boost incorrects | Réduire ampgain de lificateur Inspect speaker and amplifier for damage Adjust LPF and Bass Boost settings |
| AmpSurchauffe de l'amplificateur | Ventilation insuffisante Charge d'impédance incorrecte Gain trop élevé | Assurez une bonne circulation d'air autour amplifier Vérifiez que l'impédance des haut-parleurs correspond. amplifier's stable load Réduire ampgain de lificateur |
9. Spécifications
Gravity G3-12D4 Subwoofer
- Speaker Size: 12 Inches
- Voice Coil Configuration: Dual 4 Ohm
- Peak Power: 2000 Watts (each)
- RMS Power: 1000 Watts (each)
- Réponse en fréquence : 30 - 500 Hz
- Sensibilité : 87 dB
Gravity WZ3000.1D Amplifier
- Max Power: 3000W @ 1 Ohm
- Classe : D
- Stable Impedance: 1 Ohm, 2 Ohm, 4 Ohm
- Signal-to-Noise Ratio (S/N): 70 dB
- Réponse en fréquence : 8 Hz ~ 180 XNUMX Hz
- Distorsion harmonique totale (THD) : 0.2 %
- Bass Boost Level: 0 ~ 12 dB
- Low Pass Filter (LPF): 40 Hz ~ 180 Hz
- Subsonic Filter: 0 ~ 50 Hz
- Dimensions (L×W×H): 223.5mm (8.8 in) × 211mm (8.3 in) × 64.5 mm (2.5 in)
Calibre 4 AmpKit d'installation de lifier
- Power Cable: 17 ft. 4 Gauge
- Ground Cable: 3 ft. 4 Gauge
- Fuse Holder: Inline AGU with 80A + 100A Fuses
- RCA Cable: 17 ft. Double Shielded
- Turn-On Cable: 17 ft. 18 Gauge
- Speaker Wire: 20 ft. 16 Gauge
10. Garantie et assistance
Gravity products are designed for reliability and performance. For specific warranty terms and conditions, please refer to the warranty card included with your product or contact Gravity customer support. Keep your purchase receipt as proof of purchase for any warranty claims.
For technical support or inquiries, please visit the official Gravity website ou contactez leur service client.