1. Introduction
The Rolls HE18 Hum Eliminator is a passive audio device designed to remove unwanted hum and buzz caused by ground loops in audio systems. This unit requires no external power and effectively isolates ground paths, converting unbalanced signals to balanced for cleaner audio transmission.
2. Principales caractéristiques
- Removes buzz or hum caused by ground loops.
- Passive operation, requiring no external power supply.
- Converts unbalanced audio signals to balanced.
- Features both RCA and 1/4" (6.35mm) input/output connections.
3. Informations importantes sur la sécurité
Please read and understand the following safety guidelines before using the Rolls HE18 Hum Eliminator:
- N’exposez pas l’appareil à l’humidité, à la pluie ou à des températures extrêmes.
- Évitez de placer l’appareil à proximité de sources de chaleur ou en plein soleil.
- This device is passive and does not require external power. Do not attempt to connect it to a power source.
- Ensure all audio cables are securely connected to prevent signal loss or intermittent operation.
- N'essayez pas d'ouvrir le casing or modify the unit. There are no user-serviceable parts inside.
4. Instructions de configuration
The Rolls HE18 is designed for straightforward integration into your audio system. Follow these steps to connect the device:
4.1 Identifying Connections
The HE18 features both RCA and 1/4" (6.35mm) input and output jacks for stereo audio signals. Each channel (Left and Right) has dedicated input and output connections.
Figure 1 : Face avant view of the Rolls HE18 Hum Eliminator, illustrating the RCA and 1/4" input and output connections for both left and right channels.
Figure 2 : Côté view of the Rolls HE18 Hum Eliminator, highlighting the 1/4" input and output connections.
4.2 Étapes de connexion
- Identify the Source and Destination: Determine which audio component is producing the hum (source) and which component is receiving the signal (destination). The HE18 should be placed between these two components.
- Connecter les entrées : Connect the audio output from your source device (e.g., mixer, preamplifier) to the corresponding LEFT INPUT and RIGHT INPUT jacks on the HE18. You can use either RCA cables or 1/4" (6.35mm) TS cables.
- Sorties de connexion : Connect the LEFT OUTPUT and RIGHT OUTPUT jacks of the HE18 to the audio input of your destination device (e.g., amplifier, powered speakers). Ensure you use the same type of cables (RCA or 1/4" TS) as used for the inputs.
- Mise sous tension : Once all connections are secure, power on your audio components. The HE18 operates passively and does not require its own power.
The HE18 will automatically isolate the ground paths, reducing or eliminating ground loop hum.
5. Fonctionnement
The Rolls HE18 Hum Eliminator functions as a transparent audio interface. Once connected, it continuously works to isolate ground loops without requiring any user adjustments. Its passive design ensures reliable operation without the need for power adapters or batteries.
6. Entretien
The HE18 is a robust device designed for long-term use with minimal maintenance. To ensure optimal performance and longevity:
- Nettoyez l'appareil avec un chiffon doux et sec. Évitez d'utiliser des nettoyants liquides ou des solvants.
- Conservez l'appareil dans un endroit sec, à l'abri de la lumière directe du soleil et des températures extrêmes.
- Vérifiez régulièrement les connexions des câbles pour vous assurer qu'elles sont bien fixées et exemptes de dommages.
7. Dépannage
If you encounter issues while using the HE18, refer to the following troubleshooting guide:
- Hum Persists:
- Assurez-vous que tous les câbles audio sont complètement insérés et bien fixés.
- Verify that the hum is indeed a ground loop issue. The HE18 is designed to address ground loop hum, not other types of interference (e.g., radio frequency interference, cable noise).
- Try isolating other components in your audio chain to pinpoint the exact source of the ground loop.
- Ensure you are connecting the HE18 between the correct components that are part of the ground loop.
- Signal Loss or Degradation:
- Check the integrity of your audio cables. Replace any damaged cables.
- Confirm that the HE18 is connected correctly: source output to HE18 input, and HE18 output to destination input.
- While designed for minimal impact, passive devices can sometimes introduce slight signal attenuation or impedance mismatches depending on the specific characteristics of the connected equipment. If significant degradation occurs, consult the specifications of your other audio components.
8. Spécifications techniques
| Spécification | Détail |
|---|---|
| Numéro de modèle | HE18 |
| Poids de l'article | 1 livre |
| Dimensions du produit | 5 x 5 x 5 pouces |
| Couleur | Noir |
| D'entrée / sortie Connecteurs | RCA, 1/4" (6.35mm) TS |
| Besoin en énergie | Passive (No power required) |
9. Contenu du colis
The Rolls HE18 Hum Eliminator package includes:
- 1x Rolls HE18 Hum Eliminator Unit
10. Garantie et assistance
For detailed warranty information, product registration, or technical assistance, please visit the official Rolls webConsultez leur site web ou contactez directement leur service client. Conservez votre reçu d'achat comme preuve d'achat pour toute réclamation au titre de la garantie.
