Definitive Technology D15 Demand Series Tower Speaker (Right-Channel) User Manual

1.製品オーバーview

The Definitive Technology D15 Demand Series Tower Speaker is a high-performance 3-way speaker designed to deliver full-range, room-filling sound and precise imaging. This dedicated right-channel speaker features a 1-inch annealed aluminum dome tweeter, BDSS midrange/woofer sections, new carbon fiber woofers, and dual 8-inch side-firing passive radiators. Its modern, elegant styling with a hand-crafted cabinet and extruded aluminum front baffle integrates seamlessly into any home audio setup.

For optimal stereo imaging and a complete soundstage, this D15 right-channel speaker should be paired with a dedicated D15 left-channel speaker (sold separately).

2. 箱の中身

• One (1) D15 Demand Series Tower Speaker (Right-Channel)

Please inspect the contents of the box for any damage or missing parts. Contact your retailer immediately if any issues are found.

3. セットアップと配置

Proper setup and placement are crucial for achieving the best audio performance from your D15 tower speaker. Follow these guidelines for optimal sound quality:

3.1 開梱と初期検査

Carefully remove the speaker from its packaging. Retain all packaging materials for future transport or storage. Inspect the speaker for any visible damage.

3.2 Speaker Orientation and Pairing

The D15 speaker features offset tweeters designed for optimum stereo imaging. It is essential to purchase both a dedicated left-channel and a dedicated right-channel speaker to form a true stereo pair. Ensure the speakers are positioned correctly according to their left/right designation for accurate soundstage reproduction.

3.3 Room Placement

• 壁からの距離: For optimal sound, especially for bass response, position the speakers approximately 2 to 3 feet away from the rear wall. This allows the sound from the rear-firing passive radiators to reflect and enhance the soundstage without causing excessive bass buildup.
• ステレオ分離: Place the left and right speakers equidistant from your primary listening position, forming an equilateral triangle. Adjust the toe-in (angle towards the listener) slightly to fine-tune the stereo image.
• 安定性： The speaker includes a cast aluminum base with spikes and floor glides. Use the spikes for carpeted surfaces to couple the speaker firmly to the floor, reducing unwanted vibrations. Use the floor glides for solid surfaces like hardwood or tile to protect the floor and maintain stability.

Image: A pair of white Definitive Technology D15 tower speakers set up in a living room for stereo listening, flanking a media console.

Image: A home theater setup featuring white Definitive Technology D15 tower speakers, a matching center channel speaker, and a television.

画像: クローズアップ view of the cast aluminum base of the D15 speaker, showing the floor glides for stability on hard surfaces.

3.4 接続 Ampリファイア/レシーバー

Connect your D15 speaker to your amplifier or receiver using high-quality speaker cables. Ensure correct polarity (positive to positive, negative to negative) for both speakers and the amplifier. Incorrect polarity can lead to poor bass response and a degraded stereo image.

Image: The rear panel of a Definitive Technology D15 speaker, displaying the speaker terminals for connecting to an amplifier。

4. スピーカーの操作

Once properly set up, your D15 speaker is ready to deliver exceptional audio. The speaker is designed for full-range music and home theater experiences, providing deep, punchy bass and clear high-frequency reproduction.

4.1 オーディオ性能

• The 1-inch annealed aluminum dome tweeter with 20/20 Wave Alignment Lens ensures smooth, accurate high-frequency reproduction.
• The 5.25-inch BDSS woofer and dual 5.25-inch carbon fiber drivers provide a natural mid-range timbre and enhanced bass.
• Dual 8-inch side-firing passive radiators contribute to deeper, more impactful bass.

画像: 詳細な view of the 1-inch aluminum dome tweeter, part of the D15's driver array.

Image: A close-up of the 5.25-inch Balanced Double Surround System (BDSS) driver, designed for superior mid-range detail.

Image: A detailed shot of one of the 8-inch side-firing passive bass radiators, which enhance low-frequency response.

4.2 システムの拡張

The D15 tower speakers are part of the Demand Series and can be integrated into a larger home theater system. Consider adding a D5 center channel speaker and D9 or D7 bookshelf speakers for a thrilling surround sound and immersive home theater experience.

5. メンテナンス

To ensure the longevity and optimal performance of your D15 speaker, follow these maintenance tips:

• クリーニング： Use a soft, dry cloth to wipe down the cabinet. Avoid abrasive cleaners or solvents. For the grille, a soft brush or vacuum cleaner with a brush attachment can be used to remove dust.
• グリルのお手入れ: The D15 features acoustically transparent magnetic grilles. These can be easily removed if you prefer the aesthetic of the exposed drivers. Handle them gently to avoid damage.
• 環境： スピーカーを直射日光の当たる場所、熱源の近く、湿度の高い場所に置かないでください。

Image: A black D15 tower speaker with its magnetic grille attached, providing a clean and minimalist look.

Image: A D15 speaker with its magnetic grille removed, revealing the tweeter, midrange, and woofer drivers.

6。 トラブルシューティング

If you encounter any issues with your D15 speaker, refer to the following common troubleshooting steps:

• 音が出ない:
  • Check all cable connections between the speaker and your amp送電器/受電器。しっかりと正しく接続されていることを確認してください（プラスとプラス、マイナスとマイナス）。
  • あなたの amp受信機/コントローラの電源がオンになっており、正しい入力ソースに設定されています。
  • Confirm that the volume is not muted or set too low on your ampリファイア/レシーバー。
• 歪んだ音:
  • 音量を下げてください ampリファイア/レシーバー。
  • Check speaker wire connections for any frayed strands that might be touching.
  • Ensure the speaker is not overdriven by the amplifier。
• 弱い低音:
  • Check speaker placement relative to walls (refer to Section 3.3).
  • Verify correct speaker polarity.
  • 低音設定を調整する ampリファイア/レシーバー。
• Poor Stereo Imaging:
  • Ensure both left and right speakers are correctly designated and positioned.
  • Adjust speaker toe-in and distance from the listening position.

If the issue persists after trying these steps, please contact Definitive Technology customer support.

7. 仕様

8. 公式製品ビデオ

9. 保証とサポート

The Definitive Technology D15 Demand Series Tower Speaker comes with a full warranty. For detailed warranty information, terms, and conditions, please refer to the warranty card included with your product or visit the official Definitive Technology webサイト。

For technical support, service, or any inquiries, please contact Definitive Technology customer support through their official channels. You can find contact information on their webサイトまたは製品ドキュメントに記載されています。

訪問する Definitive Technology Store 詳しい製品と情報については、こちらをご覧ください。