Definitive Technology ProSub 800 Powered Subwoofer User Manual

1. Introduzione e oltreview

The Definitive Technology ProSub 800 is a high-performance powered subwoofer designed to enhance your audio experience with deep, impactful bass. It features a 300-watt amplifier driving an 8-inch front-mounted direct-radiating woofer, pressure-coupled to an 8-inch Low Bass Radiator. This design provides a net radiating area greater than a single 10-inch woofer, delivering superior speed, pitch definition, and control for both music and movie soundtracks.

This manual provides essential information for setting up, operating, and maintaining your ProSub 800 to ensure optimal performance and longevity.

Figura 1: Fronte view of the Definitive Technology ProSub 800 Subwoofer with its grille.

Figura 2: Angolato view of the Definitive Technology ProSub 800 Subwoofer, showcasing il suo design compatto.

2. Understanding Bass Radiator Technology

The ProSub 800 utilizes Definitive Technology's Bass Radiator technology to achieve powerful and accurate low-frequency reproduction. This system employs an active driver and a passive bass radiator within a sealed enclosure. The air pressure generated by the active driver's movement causes the passive radiator to move, effectively increasing the bass output and efficiency without requiring additional amppotenza del lifier o un involucro più grande.

3. Configurazione e installazione

3.1 Disimballaggio

Carefully remove the subwoofer from its packaging. Inspect the unit for any signs of damage. Retain all packaging materials for future transport or service needs.

3.2 Posizionamento

The placement of your subwoofer significantly impacts its performance. Experiment with different locations in your room to find the best balance of bass response and integration with your main speakers. The ProSub 800's design allows for flexible placement without easily revealing its location due to its efficient bass radiation.

• Posizionamento ad angolo: Spesso fornisce la maggiore resa dei bassi, ma a volte può suonare rimbombante.
• Parte anteriore della stanza: Placing the subwoofer near your front main speakers can improve integration and soundstage coherence.
• Mid-Wall Placement: Can offer a more balanced bass response.

Ensure the subwoofer is placed on a stable, level surface. The ProSub 800 includes integrated feet with rubber tips for secure placement and height adjustment on uneven floors.

Figura 3: Esample placement of the ProSub 800 in a home audio environment.

3.3 Connessioni

The ProSub 800 offers various connection options for integration with any stereo or multi-channel audio system.

• Low-Level Input (LFE): For receivers or processors with a dedicated subwoofer pre-out (LFE output). Connect a single RCA cable from your receiver's LFE output to the LFE input on the subwoofer. This bypasses the subwoofer's internal low-pass crossover.
• High-Level Inputs/Outputs: For receivers without a dedicated LFE output, or for stereo systems. Connect your main amplifier's speaker outputs to the subwoofer's "High Level In" terminals, and then connect the subwoofer's "High Level Out" terminals to your main speakers.

Assicurarsi che tutti i collegamenti siano sicuri prima di accendere l'unità.

Figure 4: Rear panel connections and controls of the ProSub 800.

4. Istruzioni per l'uso

4.1 Accensione/spegnimento

The ProSub 800 features a signal-sensing auto on/off function. When an audio signal is detected, the subwoofer will automatically power on. After a period of inactivity, it will enter standby mode. Ensure the main power switch (if present) is in the 'On' position for the auto function to work.

4.2 Controllo del volume

Adjust the subwoofer's volume using the conveniently located side-mounted control knob. Start with a low volume and gradually increase it until the bass blends seamlessly with your main speakers without overpowering them.

Figure 5: The side-mounted volume control for easy access.

4.3 Low Pass Crossover Adjustment

The ProSub 800 includes a continuously adjustable low-pass filter control, ranging from 40 Hz to 150 Hz. This allows you to set the upper frequency limit for the subwoofer, ensuring a smooth transition between the subwoofer and your main speakers. If using the LFE input, this control is bypassed, and the crossover is managed by your receiver or processor.

Adjust the crossover frequency to match the low-frequency capabilities of your main speakers. A good starting point is often around 80 Hz, but fine-tuning may be necessary for optimal sound integration.

5. Manutenzione

To ensure the longevity and optimal performance of your ProSub 800, follow these maintenance guidelines:

• Pulizia: Use a soft, dry cloth to clean the cabinet. Avoid abrasive cleaners, solvents, or strong detergents, as these can damage the finish.
• Spolverare: Regularly dust the grille and cabinet to prevent dust buildup, which can affect sound quality and component lifespan.
• Ambiente di collocamento: Avoid placing the subwoofer in direct sunlight, near heat sources, or in areas with high humidity. Ensure adequate ventilation around the unit.
• Gestione: When moving the subwoofer, lift it carefully to avoid dropping or damaging the feet or cabinet.

6. Risoluzione Dei Problemi

If you experience issues with your ProSub 800, consult the following troubleshooting tips:

• Nessun suono:
  • Check if the subwoofer is plugged into a working power outlet and the power switch is on.
  • Verify that the audio cables are securely connected to both the subwoofer and your receiver/processor.
  • Ensure the volume control on the subwoofer is not set to minimum.
  • If using LFE input, check your receiver's settings to ensure the subwoofer output is enabled and volume is adjusted.
  • If using high-level inputs, ensure your main amplifier is powered on and sending a signal.
• Bassi distorti o rimbombanti:
  • Ridurre il volume del subwoofer.
  • Adjust the low-pass crossover frequency. A lower setting might improve clarity.
  • Experiment with subwoofer placement. Moving it away from corners or walls can reduce boominess.
  • Verificare la presenza di collegamenti allentati o cavi danneggiati.
• Subwoofer Does Not Turn On Automatically:
  • Ensure the auto on/off feature is enabled (if applicable via a switch, though the description mentions signal sensing).
  • Increase the input signal level from your receiver/processor, as the auto-on feature requires a sufficient signal to activate.

Se il problema persiste dopo aver provato questi passaggi, consultare la sezione Supporto per ulteriore assistenza.

7. Specifiche

8. Informazioni sulla garanzia

The Definitive Technology ProSub 800 comes with the following limited warranty:

• Amplificatore: 3 anni
• Componenti degli altoparlanti: 5 anni

Please retain your proof of purchase for warranty claims. For full warranty terms and conditions, refer to the official product registration card included with your subwoofer or visit the Definitive Technology websito.

9. Supporto

For technical assistance, service, or additional information regarding your Definitive Technology ProSub 800, please contact Definitive Technology customer support. You can find contact details on the official Definitive Technology websito o tramite la documentazione fornita con il prodotto.

Risorse online: Visit the Definitive Technology Store on Amazon