1. はじめに
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. 主な特徴
- 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. 重要な安全情報
Please read and understand the following safety guidelines before using the Rolls HE18 Hum Eliminator:
- デバイスを湿気、雨、または極端な温度にさらさないでください。
- ユニットを熱源の近くや直射日光の当たる場所に置かないでください。
- 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.
- cを開こうとしないでくださいasing or modify the unit. There are no user-serviceable parts inside.
4. セットアップ手順
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.
図1: 前面 view of the Rolls HE18 Hum Eliminator, illustrating the RCA and 1/4" input and output connections for both left and right channels.
図2：側面 view of the Rolls HE18 Hum Eliminator, highlighting the 1/4" input and output connections.
4.2 接続手順
- 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.
- 入力を接続: 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.
- 出力を接続: 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.
- 電源オン: 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. 操作
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. メンテナンス
The HE18 is a robust device designed for long-term use with minimal maintenance. To ensure optimal performance and longevity:
- 本体を清潔に保つには、柔らかく乾いた布で拭いてください。液体クリーナーや溶剤の使用は避けてください。
- デバイスは直射日光や極端な温度を避け、乾燥した環境に保管してください。
- ケーブル接続が安全で損傷がないことを定期的に確認してください。
7。 トラブルシューティング
If you encounter issues while using the HE18, refer to the following troubleshooting guide:
- Hum Persists:
- すべてのオーディオ ケーブルが完全に挿入され、しっかりと固定されていることを確認します。
- 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. 技術仕様
| 仕様 | 詳細 |
|---|---|
| モデル番号 | ＨＥ００４ |
| アイテム重量 | 1ポンド |
| 製品寸法 | 5 x 5 x 5インチ |
| 色 | 黒 |
| 入力/出力コネクタ | RCA, 1/4" (6.35mm) TS |
| 電力要件 | Passive (No power required) |
9. パッケージ内容
The Rolls HE18 Hum Eliminator package includes:
- 1x Rolls HE18 Hum Eliminator Unit
10. 保証とサポート
For detailed warranty information, product registration, or technical assistance, please visit the official Rolls web公式サイトをご覧いただくか、カスタマーサポートに直接お問い合わせください。保証請求の際は、購入証明としてレシートを保管してください。
