1. はじめに
This manual provides detailed instructions for the installation, operation, and maintenance of your NVX XAD12 Monoblock Car Audio Amplifier. The XAD12 is a 1500W RMS, 1-Ohm stable, full bridge Class D amplifier designed for high-power car audio applications. Please read this manual thoroughly before attempting installation or operation to ensure proper use and to prevent damage.
2. 安全情報
- 電気作業を始める前に、必ず車両のバッテリーのマイナス端子を外してください。
- 鋭利なエッジや可動部品による損傷を防ぐために、すべての配線が適切に配線され、固定されていることを確認してください。
- 設置セクションで指定されているように、電源およびアース接続には適切なゲージの配線を使用してください。
- Install fuses as close to the battery as possible to protect against short circuits.
- の取り付けは避けてください。 amp直射日光、高温、湿気、ほこりの多い場所に置かないでください。
- インストール プロセスのいずれかの部分について不明な点がある場合は、専門のインストール担当者にご相談ください。
- 操作 amplifier at extreme volumes for extended periods can cause hearing damage.
3. セットアップとインストール
Proper installation is crucial for optimal performance and safety. The NVX XAD12 features a Pulse Width Modulated (PWM) MOSFET power supply and soft start turn-on circuitry.
3.1 取り付け Ampリファイアー
The XAD12 is designed for surface mount installation. Choose a location that provides adequate ventilation and is protected from moisture and direct heat. Ensure there is sufficient space around the amp空気循環用のライファイヤー。
Figure 3.1: The NVX XAD12 ampライフファイア、ショーasing its compact chassis design. This image highlights the overall physical dimensions of the unit.
3.2電源接続
電源、アース、リモート電源オンの配線を amplifier's power input terminal block.
- +12V（電源）: Connect a heavy-gauge power cable (e.g., 4 AWG or larger for 1500W RMS) directly from the positive terminal of the vehicle's battery. Install an appropriate fuse (not included) within 18 inches of the battery.
- REM IN (Remote Turn-On): Connect a 18-gauge wire from the remote turn-on output of your head unit or other switched 12V source.
- GND (グランド): Connect a heavy-gauge ground cable (same gauge as power) to a clean, unpainted metal surface of the vehicle's chassis. Ensure a solid electrical connection.
図3.2：背面 view of the NVX XAD12 amplifier, detailing the power input section with +12V, REM IN, and GND terminals clearly labeled.
3.3 スピーカー出力接続
Connect your subwoofer(s) to the speaker output terminals. The XAD12 is 1-Ohm stable, allowing for flexible wiring configurations. Ensure the total impedance of your connected speakers does not fall below 1 Ohm.
Figure 3.3: The NVX XAD12 amplifier, highlighting its 1-Ohm stable capability. This view shows the input and output connections on the side panel.
3.4 RCA入力/出力接続
Connect the RCA input cables from your head unit's subwoofer output to the amplifier's INPUT RCA jacks. If daisy-chaining multiple amplifiers, use the OUTPUT RCA jacks to send the signal to the next amplifier。
図3.4：上 view of the NVX XAD12 amplifier, illustrating the RCA input and output connections, along with various control knobs for audio adjustment.
3.5 Remote Level Control Connection
Connect the included remote bass level control to the "REMOTE" port on the amplifier. This allows for convenient adjustment of the subwoofer output level from the driver's seat.
Figure 3.5: The included remote bass level control for the NVX XAD12 amplifier, featuring a power indicator and a rotary knob for level adjustment.
図3.6: 詳細な view of the NVX XAD12 remote bass level control, showing the 'PWR' indicator and the 'MIN' to 'MAX' adjustment dial.
4. 操作方法 Ampリファイアー
Once all connections are made and verified, you can power on your system and adjust the ampライファイア設定。
4.1 初期電源投入とゲイン調整
- ヘッドユニットの電源を入れます。 amplifier should power on (indicated by the power LED).
- 設定する amplifier's GAIN control to its minimum position.
- Play a familiar music track with a strong bass presence at about 75% of your head unit's maximum volume.
- ゆっくりとゲインコントロールを上げます amplifier until you hear distortion, then back it off slightly. The POWER/CLIP/PROTECT indicator can assist in setting the gain without clipping.
図4.1: 角度付き view of the NVX XAD12 amplifier, displaying the various control knobs including Subsonic, LPF, Gain, and Bass Boost, along with the input/output terminals.
4.2 Crossover and Bass Boost Adjustments
- LPF (ローパスフィルター): Adjust this control to filter out high frequencies from your subwoofer. A common starting point is 80-100 Hz.
- SUBSONICフィルター: This filter removes extremely low frequencies that are below the audible range and can cause damage to your subwoofer. Set it slightly below your subwoofer's port tuning frequency or around 20-30 Hz.
- バスブースト： Use this control sparingly to enhance bass output. Excessive bass boost can lead to distortion and potential speaker damage. Start at 0dB and increase gradually if desired.
図4.2：上 view of the NVX XAD12 amplifier, providing a clear look at the Subsonic, LPF, Gain, and Bass Boost controls, along with the POWER/CLIP/PROTECT indicators.
5. メンテナンス
- クリーニング： 柔らかく乾いた布で拭いてください。 amp洗浄剤の外装。刺激の強い化学薬品や研磨剤入りの洗剤は使用しないでください。
- 換気： 確実に amplifier's cooling fins are free from obstructions to maintain proper airflow. Periodically check for dust buildup.
- 接続: Periodically inspect all power, ground, speaker, and RCA connections to ensure they are secure and free from corrosion.
6。 トラブルシューティング
問題が発生した場合 amp問題が解決しない場合は、次のトラブルシューティング ガイドを参照してください。
| 問題 | 考えられる原因 | 解決 |
|---|---|---|
| 電源なし / 音が出ない | ヒューズが切れている、電源/アース/リモート ワイヤが緩んでいる、ヘッド ユニットのリモート出力に障害がある。 | ヒューズを確認して交換します。すべての電源、アース、リモート接続を確認します。ヘッドユニットのリモート出力をテストします。 |
| 歪んだ音 | Gain set too high; Improper crossover settings; Speaker impedance too low. | Reduce gain; Adjust LPF/Subsonic filters; Verify speaker impedance is 1 Ohm or higher. |
| Amplifier Goes into Protection Mode (Protect LED on) | 過熱、スピーカーの短絡、スピーカーのインピーダンスが低すぎる、DC オフセット。 | Ensure proper ventilation; Check speaker wiring for shorts; Verify speaker impedance; Consult a professional. |
| サブウーファーから低音が出ない | RCA cables disconnected; LPF set too low; Subwoofer wired out of phase. | Check RCA connections; Adjust LPF to appropriate frequency; Verify subwoofer wiring phase. |
7. 仕様
| 特徴 | 仕様 |
|---|---|
| モデル | NVX XAD12 |
| 出力電力（RMS） | 1500ワット |
| チャンネル | 1（モノブロック） |
| Minimum Stable Impedance | 1オーム |
| Amplifierクラス | Class D (Full Bridge) |
| 電源 | Pulse Width Modulated MOSFET |
| 周波数応答 | 10～300Hz |
| 最大供給量tage | 14ボルト |
| 寸法（幅×長さ×高さ） | 6"W x 8.75"L x 2.5"H |
| 取り付けタイプ | 表面実装 |
| 仕様が満たされました | CEA-2006準拠 |
8. 保証情報
NVX products are designed and manufactured to the highest quality standards. For specific warranty terms and conditions, please refer to the official NVX web保証書または製品に付属の保証書をご覧ください。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。
9. カスタマーサポート
If you have any questions or require assistance with your NVX XAD12 amplifier, please contact NVX customer support through their official website or authorized dealer. Provide your product model number (XAD12) and purchase details when seeking support.