1. はじめにview
This manual provides essential information for the proper installation, operation, and maintenance of your Fenton 902.426 WK20 8-inch Kevlar Woofer. Designed for high-fidelity audio reproduction, this woofer features a durable Kevlar cone and robust rubber suspension, ensuring clear and powerful bass. It is suitable for integration into various audio systems, including home and car audio setups.
Key features include a 20 cm (8-inch) diameter, 250 Watts RMS power handling, 500 Watts maximum power, 8 ohms impedance, and a sensitivity of 85.5 dB. The frequency response ranges from 27 Hz to 6000 Hz.
画像1.1：正面 view of the Fenton 902.426 WK20 woofer, showcasing its yellow Kevlar cone and black rubber surround.
2. セットアップとインストール
2.1インストールに関する考慮事項
The Fenton 902.426 WK20 woofer has an impedance of 8 ohms, making it compatible with a wide range of home audio amplifiers. It can be installed as a single unit, in pairs, or as part of a multi-speaker array, depending on your audio system design.
2.2 Ampリファーレコメンデーション
This woofer is designed to be amplified by a traditional 2-channel Class AB amplifier. For optimal performance and to achieve the best sound quality, it is recommended to provide approximately チャネルあたり 250 ワット RMS. To prevent potential damage to the speaker, it is crucial not to exceed the maximum recommended power ratings of 500 Watts.
2.3 物理的寸法と取り付け
Careful consideration of the woofer's dimensions is necessary for proper installation into an enclosure or mounting location. Refer to the diagram below for detailed measurements:
- Total Diffuser Diameter: 20.3センチ
- Diagonal Installation Holes: 19.5センチ
- Installation Cutout Diameter: 18.3センチ
- 磁石の直径: 14センチ
- 取り付け深さ: 8.8センチ
- 製品寸法（長さ x 幅 x 高さ）： 12 x 21 x 23 cm
- 商品の重量: 2.8キロ
Image 2.1: Dimensional drawing of the woofer, indicating total diameter, mounting depth, and magnet diameter.
2.4配線接続
ウーファーを amplifier using appropriate speaker wire. Ensure correct polarity (+ to + and - to -) to maintain proper phase and sound quality. The woofer features standard terminals for secure connections.
画像2.2：リア view of the woofer, highlighting the connection terminals and the Fenton branding on the magnet.
3. 操作手順
After successful installation and connection to a compatible ampライファイアを使用する場合は、次の一般的な操作ガイドラインに従ってください。
- 初期パワーアップ: 電源を入れる前に amplifier, ensure its volume control is set to the minimum level.
- 音量調整: 徐々に増やして amplifier's volume to your desired listening level. Avoid sudden high volume increases.
- オーバードライブを避ける: Do not operate the woofer at excessively high volumes for extended periods, as this can lead to distortion and potential damage to the speaker components. If you hear any distortion, immediately reduce the volume.
- システム互換性: あなたの amplifier's output power and impedance match the woofer's specifications for optimal performance and longevity.
4. メンテナンス
Proper maintenance will help extend the lifespan and maintain the performance of your woofer:
- クリーニング： Regularly clean the woofer cone and surround with a soft, dry, lint-free cloth. Avoid using harsh chemicals or abrasive materials.
- 環境保護: Protect the woofer from direct sunlight, extreme temperatures, and high humidity. The woofer is 防水ではありません; avoid exposure to liquids.
- 物理的な取り扱い: Do not press on the speaker cone or suspension, as this can cause permanent damage.
- 検査： Periodically inspect the speaker for any signs of wear or damage, especially to the cone and rubber surround.
5。 トラブルシューティング
If you encounter issues with your Fenton 902.426 WK20 woofer, refer to the following troubleshooting guide:
5.1 音が出ない
- 接続を確認してください: Ensure all speaker wires are securely connected to both the woofer and the ampライファイアであり、その極性は正しいです。
- Ampライフステータス: あなたの amplifier is powered on, functioning correctly, and receiving an audio signal from your source device.
- ソースデバイス: Confirm that your audio source (e.g., stereo, car head unit) is playing and its volume is not muted or set too low.
5.2 歪んだ音や不明瞭な音
- 音量レベル: 減らす amp音量を上げると歪みが生じることが多い。 amplifier or woofer is overdriven.
- インピーダンスマッチ: 確認する ampスピーカーの出力インピーダンスはウーファーの 8 オームのインピーダンスと一致します。
- 物理的ダメージ: Visually inspect the woofer cone and rubber surround for any tears, punctures, or other physical damage.
- クロスオーバー設定: If using a crossover, ensure it is set appropriately for a woofer (typically low-pass filter).
5.3 Weak or Insufficient Bass
- Ampリファイアパワー： あなたの amplifier provides sufficient power (250 Watts RMS recommended) to drive the woofer effectively.
- 囲い： Verify that the woofer is installed in a suitable enclosure (if applicable) that is properly sealed and sized for optimal bass response.
- 段階： Double-check speaker wire polarity. Incorrect polarity can lead to phase cancellation and reduced bass output.
- Equalizer/Bass Boost: Adjust any equalizer or bass boost settings on your ampライファイアーまたはオーディオソース。
6. 技術仕様
| 特徴 | 仕様 |
|---|---|
| ブランド | フェントン |
| モデル | 902.426 WK20 |
| スピーカータイプ | ウーファー |
| スピーカーサイズ | 8インチ（20 cm） |
| コーン素材 | ケブラー |
| サスペンション素材 | ゴム |
| RMSパワー | 250ワット |
| 最大パワー | 500ワット |
| インピーダンス | 8オーム |
| 感度 | 85.5デシベル |
| 周波数応答 | 27～6000Hz |
| Total Diffuser Diameter | 20.3センチ |
| Diagonal Installation Holes | 19.5センチ |
| Installation Cutout Diameter | 18.3センチ |
| 磁石の直径 | 14センチ |
| 取り付け深さ | 8.8センチ |
| 製品寸法（長さ x 幅 x 高さ） | 12 x 21 x 23 cm |
| アイテム重量 | 2.8キロ |
| 接続技術 | 補助、RCA |
| 防水 | いいえ |
画像6.1: 詳細 view of the woofer's magnet, displaying model number, impedance, and power ratings.
7. 保証とサポート
The Fenton 902.426 WK20 woofer comes with a 2年間のメーカー保証この保証は、通常の使用における材料および製造上の欠陥をカバーします。
For warranty claims, technical assistance, or any product-related inquiries, please contact your original retailer or the manufacturer, GK SOUND, directly. Please retain your proof of purchase for warranty validation.