Introduction
Thank you for choosing the Onkyo D-509C Center Speaker. This speaker is designed to deliver clear and dynamic dialogue and central sound effects, enhancing your home cinema experience. This manual provides essential information for the proper setup, operation, and maintenance of your speaker to ensure optimal performance and longevity.

Image: The Onkyo D-509C center speaker shown with other speakers in a home cinema setup. The center speaker is typically placed horizontally below or above the television.
Installation
1. Emplacement des haut-parleurs
The center channel speaker is crucial for dialogue clarity in a home theater system. Place the D-509C directly above or below your television or projection screen, centered horizontally. Ensure it is on a stable, flat surface, such as a TV stand or shelf, and positioned at approximately ear level when seated for the best listening experience.
2. Connexion des câbles d'enceintes
Before connecting, ensure your AV receiver or amplifier is turned off and unplugged from the power outlet. Use high-quality speaker cables for optimal sound performance.
- Prepare the speaker cables by stripping approximately 1/2 inch (12-15 mm) of insulation from the ends of each wire. Twist the bare wire strands tightly to prevent short circuits.
- Identify the positive (+) and negative (-) terminals on both the D-509C speaker and your AV receiver. The positive terminal is usually red, and the negative terminal is black.
- Connect the positive (+) terminal of the D-509C speaker to the positive (+) center channel output terminal on your AV receiver.
- Connect the negative (-) terminal of the D-509C speaker to the negative (-) center channel output terminal on your AV receiver.
- Ensure all connections are secure and that no bare wire strands are touching each other or any other metal parts, which could cause a short circuit.

Image: Rear panel of the Onkyo D-509C center speaker, highlighting the speaker wire binding posts. Note the red (+) and black (-) terminals for correct polarity connection.
3. Configuration du système
After connecting the speaker, refer to your AV receiver's manual for instructions on configuring speaker settings. This typically involves setting the center speaker to "Small" or "Large" depending on your system's subwoofer presence and crossover frequency. Run any automatic calibration features your receiver may have (e.g., Audyssey, MCACC) for optimal sound balance.
Utilisation de votre haut-parleur
The Onkyo D-509C is a passive speaker and does not have its own controls. Its operation is managed entirely through your connected AV receiver or amplifier. Ensure your receiver is set to the correct input source and that the center channel volume is appropriately balanced with other speakers in your system.
- Contrôle du volume : Réglez le volume global du système à l'aide de la télécommande de votre récepteur AV.
- Niveaux des canaux : If dialogue sounds too quiet or too loud, adjust the center channel level in your AV receiver's speaker setup menu.
- Position d'écoute : For the best sound, ensure your primary listening position is centered relative to the speaker and TV.
Entretien
To maintain the appearance and performance of your Onkyo D-509C speaker, follow these simple guidelines:
- Nettoyage: Gently wipe the speaker cabinet with a soft, dry cloth. For stubborn marks, slightly dampHumidifiez le chiffon avec de l'eau, puis essuyez immédiatement. Évitez d'utiliser des nettoyants abrasifs, des solvants ou des sprays chimiques, car ils peuvent endommager la finition.
- Grille: The speaker grille can be carefully removed for cleaning if necessary. Use a soft brush or a vacuum cleaner with a brush attachment to remove dust.
- Placement: Avoid placing the speaker in direct sunlight, near heat sources, or in areas with high humidity, as these conditions can affect its performance and lifespan.
- Manutention: Do not press on the speaker cones or tweeters, as this can cause damage.
Dépannage
If you experience issues with your Onkyo D-509C speaker, consult the following common problems and solutions:
| Problème | Cause possible | Solution |
|---|---|---|
| Aucun son provenant de l'enceinte centrale |
|
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| Son déformé ou indistinct |
|
|
| Dialogue sounds muffled or too quiet |
|
|
If the problem persists after trying these solutions, please consult your AV receiver's manual or contact Onkyo customer support.
Caractéristiques
The following are the technical specifications for the Onkyo D-509C Center Speaker:
- Marque: Onkyo
- Nom du modèle : J-509C
- Numéro de modèle : D-509C(B)
- Type de haut-parleur : Canal central
- Puissance de sortie maximale du haut-parleur : 150 watts
- Gestion de la puissance maximale : 150W (from product image label)
- Impédance: 4 Ohms (from product image label)
- Type de montage : Support de table
- Poids de l'article : 16.09 livre (environ 7.3 kg)
- Protocole de connectivité : Bluetooth (Note: This specification is typically for active devices; the D-509C is a passive speaker.)
- Source d'alimentation : Électrique avec fil (Note: This refers to the amplifier/receiver power, not the passive speaker itself.)
Remarque: les spécifications peuvent être modifiées sans préavis.
Informations sur la garantie
Onkyo products are manufactured to the highest quality standards. For specific warranty terms and conditions applicable to your region, please refer to the warranty card included with your product or visit the official Onkyo webConsultez le site. Conservez votre preuve d'achat pour toute réclamation au titre de la garantie.
Assistance clientèle
Pour obtenir de l'aide supplémentaire, une assistance technique ou des renseignements sur le service après-vente, veuillez consulter le site officiel d'Onkyo. website or contact your local Onkyo dealer. You can find contact information and FAQs on the Onkyo support page: