Manuale di istruzioni del subwoofer Definitive Technology Descend DN15 da 15"

1. Introduzione

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. Istruzioni di sicurezza

Per evitare danni all'unità e garantire la sicurezza personale, osservare le seguenti precauzioni di sicurezza:

• Fonte di energia: Connect the subwoofer only to the specified power supply voltage indicato sull'unità.
• Ventilazione: Ensure adequate ventilation. Do not block ventilation openings. Maintain a minimum distance of 6 inches (15 cm) around the unit for proper airflow.
• Acqua e umidità: Non esporre l'unità a pioggia, umidità, gocciolamenti o schizzi. Non posizionare oggetti contenenti liquidi, come vasi, sull'unità.
• Calore: Tenere l'unità lontana da fonti di calore quali termosifoni, bocchette di ventilazione, stufe o altri apparecchi che producono calore.
• Pulizia: Scollegare l'unità dalla presa a muro prima di pulirla. Utilizzare solo un panno asciutto.
• Manutenzione: Non tentare di riparare questo prodotto da soli. Affidare tutte le operazioni di manutenzione a personale di assistenza qualificato.
• Posizionamento: Posizionare il subwoofer su una superficie stabile e piana per evitare che si ribalti.

3. Cosa c'è nella scatola

Verificare che tutti gli articoli siano presenti nella confezione:

• Subwoofer Descend DN15 di Definitive Technology
• Slim Remote Control
• AAA Batteries (for the remote)
• Cavo di alimentazione
• Guida rapida
• Scheda di registrazione

4. Impostazione

4.1 Posizionamento del 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.

Figura 1: Angolato anteriore view of the Definitive Technology Descend DN15 Subwoofer.

4.2 Connessioni

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.

• Ingresso LFE: 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.
• Ingressi RCA stereo a livello di linea: Per ricevitori o preamplifiers 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.
• Ingresso USB A: Solo per uso di servizio.
• Innesco 12V: 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. Operativo

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

5.1 Controlli e regolazioni

Figure 3: Subwoofer control panel.

• Volume: Adjusts the overall output level of the subwoofer. Use the remote control or the rear panel buttons.
• Filtro passa basso: 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).
• Controllo di fase (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.
• Piatto: Provides a balanced frequency response.
• In profondità: Enhances the lowest frequencies for a more profound bass experience, ideal for movies.
• Forte: Maximizes output for higher volume levels.

Figure 4: Subwoofer displaying 'DEEP' EQ mode.
• Power Toggle (Auto On/Off or DC Control):
• Accensione/spegnimento automatico: The subwoofer will automatically power on when an audio signal is detected and enter standby mode after a period of inactivity.
• Controllo CC: 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. Manutenzione

Una cura adeguata garantisce la longevità e le prestazioni del subwoofer.

• Pulizia: Use a soft, dry cloth to clean the cabinet. Avoid using harsh chemicals, solvents, or abrasive cleaners, as these can damage the finish.
• Polvere: Regularly dust the grille and cabinet to prevent accumulation that could affect performance or aesthetics.
• Evitare la luce solare diretta/il calore: Do not place the subwoofer in direct sunlight or near heat sources, as this can cause discoloration or damage to internal components.

7. Risoluzione Dei Problemi

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

• Nessun potere:
• Assicurarsi che il cavo di alimentazione sia collegato saldamente sia al subwoofer sia a una presa a muro funzionante.
• Controllare l'interruttore di alimentazione sul pannello posteriore.
• Verificare che la presa a muro funzioni collegandovi un altro dispositivo.
• Nessun suono:
• 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.
• Suono distorto o rimbombante:
• Ridurre il volume del subwoofer.
• Adjust the Low Pass Filter to a lower frequency.
• Prova con il controllo di fase (0° o 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. Specifiche

Detailed technical specifications for the Definitive Technology Descend DN15 Subwoofer:

Figure 6: Dimensions of the DN15 Subwoofer.

9. Garanzia e supporto

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 websito.

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 websito o nella confezione del prodotto.