1. Introduction
Thank you for choosing the Gravity 7 Band Graphic Equalizer GR-EQ9. This equalizer is designed to provide precise control over your car audio system, allowing you to fine-tune sound frequencies for an enhanced listening experience. Please read this manual thoroughly before installation and operation to ensure proper use and optimal performance.
2. Consignes de sécurité
- Débranchez toujours la batterie du véhicule avant de commencer toute installation.
- Veillez à ce que tous les câbles soient correctement isolés afin d'éviter les courts-circuits.
- Mount the equalizer securely to avoid movement during vehicle operation.
- Do not operate the unit in wet conditions or expose it to excessive moisture.
- Consultez un installateur audio automobile professionnel si vous avez des doutes sur une quelconque étape du processus d'installation.
3. Contenu du colis
Verify that all items are present in your GR-EQ9 package:
- Gravity 7 Band Graphic Equalizer GR-EQ9 Unit
- Supports de montage
- Vis de montage
- Faisceau de câblage alimentation/masse/télécommande
- Manuel d'utilisation
Image: Included mounting brackets, screws, and wiring harness for the GR-EQ9.
4. Produit terminéview
4.1. Commandes du panneau avant
Image : Haut view of the GR-EQ9 front panel with all controls.
- SOUS NIVEAU : Régle le niveau de sortie du caisson de basses.
- LE VOLUME: Réglage principal du volume pour l'ensemble du système.
- SOUS-FRÉQUENCE : Adjusts the low-pass crossover frequency for the subwoofer output (60Hz to 90Hz).
- FONDU : Équilibre la sortie audio entre les haut-parleurs avant et arrière.
- AUX/CD Selector: Switches between Main (CD) and Auxiliary (AUX) input sources.
- 7-Band Equalizer Knobs: Individual controls for 50Hz, 125Hz, 315Hz, 750Hz, 2.2KHz, 6KHz, and 16KHz frequencies. Each band can be boosted or cut by -12dB to +12dB.
- HIGH LEVEL / MAIN LEVEL: Input level adjustment for high-level or main RCA inputs to prevent distortion.
4.2. Connexions du panneau arrière
Image: Close-up of the GR-EQ9 rear panel connections.
- MAIN IN (L/R): RCA inputs for the primary audio source (e.g., head unit).
- Entrée AUX (L/R) : RCA inputs for an auxiliary audio source.
- FRONT OUT (L/R): RCA outputs for front speakers.
- REAR OUT (L/R): RCA outputs for rear speakers.
- SUB OUT (L/R): RCA outputs for subwoofer amplifier. This output features a 10V line driver.
- Bornes d'alimentation (+12V, REM, GND) : Raccordements pour l'alimentation, la mise en marche à distance et la terre.
5. Installation
5.1. Installation
The GR-EQ9 is designed for flexible installation in various vehicle locations. Consider a location that allows for easy access to controls and proper ventilation.
Image: Mounting diagram for the GR-EQ9.
- Choose a suitable mounting location (e.g., under the dashboard, in the center console).
- Use the provided mounting brackets as a template to mark screw holes.
- Drill pilot holes and secure the brackets using the supplied screws.
- Attach the GR-EQ9 unit to the mounted brackets.
5.2. Câblage
Proper wiring is crucial for optimal performance and safety. Ensure all connections are secure and correctly polarized.
- Connexion d'alimentation (+12V): Connect the +12V wire from the equalizer to a constant +12V power source from the vehicle's battery. Use an inline fuse (not supplied) for protection. The unit operates between 9V and 16V.
- Connexion à la terre (GND) : Connect the GND wire to a clean, unpainted metal surface on the vehicle chassis.
- Mise en marche à distance (REM) : Connect the REM wire to the remote output of your head unit. This will turn the equalizer on and off with your car's audio system.
- Entrées RCA : Connect the RCA output from your head unit to the PRINCIPAL DANS (L/R) inputs on the GR-EQ9. If using an auxiliary device, connect its RCA output to the AUX IN (L/R) inputs.
- Sorties RCA : Connectez le AVANT DEHORS (L/R), SORTIE ARRIÈRE (L/R), and SOUS-SORTIE (L/R) from the GR-EQ9 to the corresponding inputs on your amplificateurs.
6. Mode d'emploi
Once installed, the GR-EQ9 allows for precise audio customization.
- Mise sous tension : The unit will power on automatically when the remote turn-on signal is received from your head unit.
- Sélection d'entrée : Utilisez le AUX/CD Selector button to switch between your main audio source (CD) and the auxiliary input (AUX).
- Contrôle du volume : Ajustez le VOLUME knob to set the overall listening level.
- Contrôle du caisson de basses :
- Utilisez le SOUS-NIVEAU knob to control the output volume of your subwoofer.
- Ajustez le SUB FREQ knob to set the low-pass crossover point for the subwoofer, typically between 60Hz and 90Hz, to blend with your main speakers.
- Ajustements de l'égaliseur : Use the seven individual frequency knobs (50Hz, 125Hz, 315Hz, 750Hz, 2.2KHz, 6KHz, 16KHz) to boost or cut specific frequency ranges. Adjust these to tailor the sound to your preference and vehicle acoustics. Each band offers a range of -12dB to +12dB.
- Contrôle des fondus : Le FADER knob allows you to adjust the balance of sound between your front and rear speakers.
- Réglage du niveau d'entrée : Utilisez le HIGH LEVEL / MAIN LEVEL switch and corresponding knobs to match the input signal level from your head unit, preventing distortion.
7. Entretien
- Gardez l'appareil propre en l'essuyant avec un chiffon doux et sec.
- Évitez d’utiliser des produits chimiques agressifs ou des nettoyants abrasifs.
- Assurez-vous que toutes les connexions restent sécurisées et exemptes de corrosion.
8. Dépannage
| Problème | Cause possible | Solution |
|---|---|---|
| Pas de courant | Blown fuse; incorrect wiring; no remote signal. | Check and replace fuse; verify +12V, GND, and REM connections. |
| Pas de son | Incorrect RCA connections; amplifier not powered; input source issue. | Verify all RCA cables are connected correctly; ensure amplifiers are on; check head unit output. |
| Son déformé | Input level too high; equalizer settings too extreme; poor grounding. | Adjust input level using HIGH LEVEL/MAIN LEVEL controls; reduce EQ boost; check ground connection. |
| Noise/Hiss | Poor grounding; RCA cables too close to power wires; gain settings too high. | Ensure proper grounding; reroute RCA cables away from power wires; adjust ampparamètres de gain du lificateur. |
9. Spécifications
- Modèle: GR-EQ9
- Dimensions du produit : 1.8 x 9 x 7.7 pouces
- Poids de l'article : 1.6 livres
- Bandes d'égalisation : 7 (50 Hz, 125 Hz, 315 Hz, 750 Hz, 2.2 kHz, 6 kHz, 16 kHz)
- Boost/Couper : -12 dB to +12 dB per band
- Fréquence de croisement du caisson de basses : Réglable (60 Hz - 90 Hz)
- Sortie du pilote de ligne : 10V (Subwoofer Output)
- Alimentation: 9V-16V DC
- Caractéristiques spéciales : EPICENTER, Fully Adjustable EQ Bands, Line Driver, RCA Output, Subwoofer Control
10. Garantie
This Gravity product is covered by a manufacturer's warranty against defects in materials and workmanship. Please refer to the warranty card included with your purchase or contact customer support for specific terms and conditions. Keep your proof of purchase for warranty claims.
11. Assistance
For technical assistance, troubleshooting, or warranty inquiries, please contact Gravity customer support. Contact details can typically be found on the product packaging or the official Gravity website.