1. Introducció
This manual provides essential information for the proper installation, operation, and maintenance of your DD Audio 608F-D2 8-inch Dual 2-Ohm 3000W Subwoofer. Please read these instructions thoroughly before proceeding with installation or use to ensure optimal performance and product longevity.

Figura 1: Frontal view of the DD Audio 608F-D2 Subwoofer.
2. Característiques del producte
The DD Audio 608F-D2 subwoofer incorporates several design elements for enhanced performance and durability:
- EROM Surround: Designed for extended excursion and durability.
- Aluminum Heatsink and Thermal Transfer Insert: Precision-engineered for thermal cooling, transferring heat away from critical components.
- High-Temperature 2.5-inch Voice Coil: Capable of handling significant power.
- Triple Layer Deep Bass, High Excursion Spider System: Contributes to deep bass reproduction and controlled cone movement.
- Unique Glass Fiber and Natural Pulp Cone: Provides a balance of rigidity and lightweight properties for accurate sound reproduction.
- Back Plate Coil Gap Venting: Further aids in thermal management.
- Extended Pole Piece: Optimizes magnetic field linearity.
- Cast Aluminum Basket: Offers structural rigidity and reduces resonance.

Figura 2: Angle view highlighting the cone and magnet assembly.
3. Contingut del paquet
Verifiqueu que tots els elements siguin presents al paquet:
- 1 x DD Audio 608F-D2 8-inch Subwoofer
4. Configuració i instal·lació
Proper installation is crucial for the performance and longevity of your subwoofer. Professional installation is recommended.
4.1 Recomanacions de recinte
The type and size of the enclosure significantly impact sound quality. Refer to the following guidelines:
- Sealed Enclosure Volume: 0.4 - 0.8 cubic feet (CuFt)
- Ported Enclosure Volume: 0.75 - 1.25 cubic feet (CuFt)
Consult with an audio specialist for custom enclosure designs to match your specific vehicle and listening preferences.
4.2 Wiring Considerations
The 608F-D2 features a Dual 2-Ohm voice coil configuration. Proper wiring is essential to match the subwoofer's impedance with your amplifier's capabilities. Incorrect wiring can damage both the subwoofer and the ampmés viu.
- Parallel Wiring (Dual 2-Ohm to 1-Ohm): Connect the positive terminals of both voice coils together and to the amplifier's positive output. Connect the negative terminals of both voice coils together and to the amplifier's negative output. This results in a 1-Ohm load.
- Series Wiring (Dual 2-Ohm to 4-Ohm): Connect the positive terminal of one voice coil to the amplifier's positive output. Connect the negative terminal of that voice coil to the positive terminal of the second voice coil. Connect the negative terminal of the second voice coil to the amplifier's negative output. This results in a 4-Ohm load.
Verifiqueu sempre la impedància final amb un multímetre abans de connectar-lo a un amplifier. Ensure all connections are secure and properly insulated.

Figura 3: lateral view illustrating mounting depth and terminal connections.
4.3 Muntatge
Ensure the mounting surface is rigid and free from obstructions. Use appropriate hardware to secure the subwoofer firmly.
- Diàmetre de muntatge: 7.37 polzades
- Profunditat de muntatge: 6.5 polzades
5. Directrius de funcionament
Follow these guidelines for optimal performance and to prevent damage:
- Període d'entrada: Allow a break-in period of approximately 20-30 hours of moderate listening before operating the subwoofer at high volumes. This allows the suspension components to loosen and reach their optimal compliance.
- Coincidència de poder: Assegureu-vos el vostre amplifier's RMS power output is within the recommended range for the subwoofer (1000 Watts RMS). Overpowering or underpowering can lead to damage.
- Evitar la distorsió: If you hear any distortion, reduce the volume immediately. Distortion indicates that the subwoofer or amplifier is being overdriven, which can cause permanent damage.
- Proper Gain Setting: Estableix el teu ampguany del lificador correctament per coincidir amb el volum de sortidatage of your head unit. Consult your amplifier's manual for proper gain adjustment procedures.
6. Manteniment
Regular maintenance helps preserve the subwoofer's condition and performance:
- Neteja: Use a soft, dry cloth to clean the cone and surround. Avoid using harsh chemicals or excessive moisture.
- Inspecció: Periodically inspect the subwoofer for any signs of damage, such as tears in the surround or cone, loose connections, or unusual odors.
- Factors ambientals: Protegiu el subwoofer de temperatures extremes, la llum solar directa i la humitat.
7. Solució De Problemes
Si teniu problemes, consulteu els següents problemes i solucions habituals:
| Problema | Causa possible | Solució |
|---|---|---|
| Sense so | Cablejat solt, amplifier off, incorrect gain settings, blown fuse. | Comproveu totes les connexions, assegureu-vos amplifier is powered on, adjust gain, inspect fuses. |
| So distorsionat | Excedit amplifier/subwoofer, incorrect gain settings, poor quality audio source. | Baixar el volum, ajustar amplifier gain, use a higher quality audio source. |
| greus febles | Incorrect enclosure volume, phase issues, low pass filter set too high/low. | Verify enclosure specifications, check amplifier phase switch, adjust low pass filter. |
8. Especificacions
Detailed technical specifications for the DD Audio 608F-D2 Subwoofer:
| Especificació | Valor |
|---|---|
| Mida de l'altaveu | 8 polzades |
| Watts RMS | 1000 W |
| Watts Peak | 3000 W |
| Impedància | Dual 2-Ohm (D2) |
| Voice Coil Diameter (VCD) | 2.5 polzades |
| Diàmetre del pistó | 6.5 polzades |
| Freqüència de ressonància (Fs) | 38 Hz |
| Q mecànic (Qms) | 7.76 |
| Q elèctrica (Qes) | 0.5 |
| Q total (Qts) | 0.46 |
| Volum equivalent (Vas) | 7.4 litres |
| Mechanical Excursion (Xmech) | 60 MM |
| Excursió lineal (Xmax) | 18 MM |
| Frame Outer Diameter (OD) | 8.3 polzades |
| Frame OD with Gasket | 8.5 polzades |
| Diàmetre de muntatge | 7.37 polzades |
| Profunditat de muntatge | 6.5 polzades |
| Diàmetre del motor | 6.5 polzades |
| Motor Depth | 3.25 polzades |
| Desplaçament del woofer | 0.07 Cubic Feet (CuFt) |
| Material | Aluminum (Basket) |
| Pes de l'article | 21 lliures |
| Fabricant | Àudio DD |

Figura 4: posterior view displaying the magnet structure and thermal management features.
9. Garantia i Suport
9.1 Garantia limitada
This DD Audio subwoofer is covered by a limited warranty. The terms and conditions of this warranty are provided at the time of purchase or can be obtained from your authorized DD Audio dealer. Please retain your proof of purchase for warranty claims.
9.2 Atenció al client
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact your authorized DD Audio dealer or visit the official DD Audio weblloc de recursos de suport.

Figura 5: A baix view of the subwoofer, highlighting the protective rubber boot.





