Definitive Technology Descend DN15 15" Subwoofer Instruction Manual

1. Introduktion

This manual provides essential information for the safe and optimal use of your Definitive Technology Descend DN15 15" Subwoofer. The DN15 is engineered to deliver powerful, clear, and impactful low-frequency sound, featuring 3XR Architecture, Intelligent Phase Control, and a 1500W peak Class H amplifier. Please read these instructions thoroughly before operating your subwoofer.

2. Sikkerhedsinstruktioner

Observe the following safety precautions to prevent damage to the unit and ensure personal safety:

• Strømkilde: Connect the subwoofer only to the specified power supply voltage angivet på enheden.
• Ventilation: Ensure adequate ventilation. Do not block ventilation openings. Maintain a minimum distance of 6 inches (15 cm) around the unit for proper airflow.
• Vand og fugt: Udsæt ikke enheden for regn, fugt, dryp eller stænk. Placer ikke genstande fyldt med væsker, såsom vaser, på enheden.
• Varme: Hold enheden væk fra varmekilder såsom radiatorer, varmeregistreringsapparater, komfurer eller andre apparater, der producerer varme.
• Rensning: Tag stikket ud af stikkontakten før rengøring. Brug kun en tør klud.
• Service: Forsøg ikke selv at servicere dette produkt. Overlad al service til kvalificeret servicepersonale.
• Placering: Place the subwoofer on a stable, level surface to prevent tipping.

3. Hvad er der i æsken

Kontroller, at alle varer er til stede i emballagen:

• Definitive Technology Descend DN15 Subwoofer
• Slim Remote Control
• AAA Batteries (for the remote)
• Strømledning
• Hurtig startvejledning
• Registreringskort

4. Opsætning

4.1 Placering af subwoofer

Optimal subwoofer placement is crucial for achieving the best bass performance in your listening environment. Experiment with different locations to find the ideal spot. Generally, placing the subwoofer in a corner can enhance bass output, while placing it along a wall can provide a more balanced sound. Avoid placing it directly in the center of a room, which can sometimes lead to bass nulls.

Figur 1: Forfra vinklet view of the Definitive Technology Descend DN15 Subwoofer.

4.2 Forbindelser

The DN15 offers versatile connection options to integrate with various home audio systems. Ensure your main audio system is powered off before making any connections.

Figure 2: Rear panel connections of the DN15 Subwoofer.

• LFE-input: For receivers or processors with a dedicated Subwoofer/LFE output. Connect a single RCA cable from your receiver's LFE output to the LFE input on the subwoofer.
• Stereo linjeniveau RCA-indgange: Til modtagere eller pre-receivereamplifiers without a dedicated LFE output. Connect RCA cables from your receiver's stereo pre-out (left and right) to the corresponding Line In (Left/Right) inputs on the subwoofer.
• High-Level Input (5-way binding posts): For connecting directly to the speaker outputs of your amplifier or receiver. This method allows the subwoofer to receive the same signal as your main speakers.
• USB A Input: Kun til servicebrug.
• 12V udløser: For integrating with home automation systems, allowing the subwoofer to power on/off with other components.

After making connections, plug the power cord into the subwoofer and then into a wall outlet.

5. Betjening

The Descend DN15 Subwoofer features various controls for fine-tuning its performance to your listening preferences and room acoustics.

5.1 Betjening og justeringer

Figure 3: Subwoofer control panel.

• Bind: Adjusts the overall output level of the subwoofer. Use the remote control or the rear panel buttons.
• Lavpasfilter: Controls the upper frequency limit of the subwoofer's output. This should be set to blend seamlessly with your main speakers. If your receiver has a built-in crossover, set the subwoofer's low pass filter to its maximum setting (LFE mode).
• Fasekontrol (0/180°): Adjusts the phase of the subwoofer's output relative to your main speakers. Experiment with both settings to find the one that provides the most coherent and impactful bass. The DN15 features Intelligent Phase Control for 360 degrees of customizable adjustment.
• EQ Modes (Flat, Deep, Loud): Select an EQ mode to tailor the subwoofer's response to your content and preference.
• Flad: Provides a balanced frequency response.
• Dyb: Enhances the lowest frequencies for a more profound bass experience, ideal for movies.
• Højt: Maximizes output for higher volume levels.

Figure 4: Subwoofer displaying 'DEEP' EQ mode.
• Power Toggle (Auto On/Off or DC Control):
• Automatisk tænd/sluk: Subwooferen tænder automatisk, når der registreres et lydsignal, og går i standbytilstand efter en periode med inaktivitet.
• DC-styring: For use with a 12V trigger from a compatible receiver or processor.

5.2 3XR Architecture

The DN15 features Definitive Technology's 3XR Architecture, which provides three times the bass-radiating surface area compared to a traditional ported subwoofer of similar size. This design incorporates a 15-inch driver pressure-coupled with dual 15-inch bass radiators, enabling the subwoofer to produce louder and clearer low frequencies without port noise distortion.

Figure 5: Illustration of the 3XR Architecture.

6. Vedligeholdelse

Korrekt pleje sikrer din subwoofers levetid og ydeevne.

• Rensning: Use a soft, dry cloth to clean the cabinet. Avoid using harsh chemicals, solvents, or abrasive cleaners, as these can damage the finish.
• Støv: Regularly dust the grille and cabinet to prevent accumulation that could affect performance or aesthetics.
• Undgå direkte sollys/varme: Do not place the subwoofer in direct sunlight or near heat sources, as this can cause discoloration or damage to internal components.

7. Fejlfinding

If you encounter issues with your Descend DN15 Subwoofer, refer to the following common problems and solutions:

• Ingen strøm:
• Ensure the power cord is securely plugged into both the subwoofer and a working wall outlet.
• Tjek afbryderen på bagpanelet.
• Kontroller, at stikkontakten fungerer ved at tilslutte en anden enhed.
• Ingen lyd:
• Confirm that the audio cables are securely connected to both the subwoofer and your receiver/processor.
• Check the volume level on the subwoofer and your receiver.
• Ensure the subwoofer is powered on and not in standby mode.
• Verify the LFE/subwoofer output is enabled in your receiver's settings.
• Adjust the Low Pass Filter setting. If using LFE, ensure it is set to maximum.
• Forvrænget eller buldrende lyd:
• Reducer subwooferens lydstyrkeniveau.
• Adjust the Low Pass Filter to a lower frequency.
• Eksperimentér med fasekontrollen (0° eller 180°).
• Try different EQ modes (Flat, Deep, Loud) to see if one provides a cleaner sound.
• Adjust the subwoofer's placement in the room.

If problems persist, contact Definitive Technology customer support or a qualified service technician.

8. Specifikationer

Detaljerede tekniske specifikationer for Definitive Technology Descend DN15 subwooferen:

Figure 6: Dimensions of the DN15 Subwoofer.

9. Garanti og support

The Definitive Technology Descend DN15 Subwoofer comes with a limited warranty. For specific warranty terms and conditions, please refer to the included Registration Card or visit the official Definitive Technology webwebsted.

For technical support, troubleshooting assistance, or service inquiries, please contact Definitive Technology customer support directly. Contact information can typically be found on the manufacturer's webwebsted eller i produktemballagen.