1. Introducció
This manual provides essential information for the proper installation, operation, and maintenance of your DD Audio 2508G-D4 8-inch Dual 4-Ohm 3600W Subwoofer. Please read this manual thoroughly before attempting installation or use to ensure optimal performance and longevity of your product. Retain this manual for future reference.
Figura 1: Frontal view of the DD Audio 2508G-D4 Subwoofer, showcasing the carbon fiber dust cap and V-ROM surround.
2. Informació de seguretat
Always observe the following safety precautions to prevent injury or damage to the subwoofer or vehicle:
- Instal·lació professional recomanada: Due to the complexity of car audio systems and the high power handling of this subwoofer, professional installation by a qualified technician is highly recommended.
- Seguretat elèctrica: Disconnect the vehicle's battery negative terminal before any wiring or installation to prevent electrical shorts and damage.
- Cablejat adequat: Ensure all wiring is correctly gauged, insulated, and securely connected to prevent overheating, short circuits, and fire hazards.
- Ventilació: Assegureu-vos que la ventilació sigui adequada al voltant del subwoofer i amplificador per evitar el sobreescalfament.
- Protecció auditiva: L'exposició prolongada a nivells elevats de pressió sonora pot causar danys auditius permanents. Aneu amb compte a l'hora d'ajustar els nivells de volum.
- Muntatge segur: Always mount the subwoofer securely within its enclosure and the enclosure securely within the vehicle to prevent movement during driving or in the event of an accident.
3. Característiques
The DD Audio 2508G-D4 subwoofer incorporates advanced design and materials for enhanced performance and durability:
- Aluminum 2-Stage Heatsink: Designed for improved thermal management, ensuring stable performance during extended use.
- 7.0 Inch Diameter Motor: Provides robust magnetic force for precise cone control.
- 20mm Top Plate: Contributes to the motor's efficiency and power handling.
- 2nd Generation V-ROM Surround: Features a triple density expansion joint for smooth and controlled cone excursion.
- Ironcloth Double Spider System: Reimagined for increased stability and durability under high excursion.
- Hand Laid Carbon Fiber Dust Cap: Offers rigidity and contributes to the subwoofer's aesthetic.
- DD ESP Cast Frame: Provides a strong and stable foundation for the moving parts.
- Carbon Fiber Loaded, Non-Pressed Pulp Cone: Combines lightweight properties with stiffness for accurate bass reproduction.
- Direct Leads & Laminated Tinsel Leads: Ensures reliable electrical connection and signal transfer.
- Embossed DDesign Magnet Boot: Protects the motor structure and adds to the finished appearance.
Figura 2: lateral view of the subwoofer, highlighting the robust surround and cone structure.
4. Especificacions
Detailed technical specifications for the 2508G-D4 subwoofer:
| Paràmetre | Valor |
|---|---|
| Mida de l'altaveu | 8 polzades |
| Gestió de potència RMS | 1200 watts |
| Manipulació de potència màxima | 3600 watts |
| Impedància nominal | Dual 4-Ohm (D4) |
| Voice Coil Diameter (VCD) | 2.5 polzades |
| Diàmetre del pistó | 7.25 polzades |
| Freqüència de ressonància (Fs) | 42 Hz |
| Q mecànic (Qms) | 5.88 |
| Q elèctrica (Qes) | 0.62 |
| Q total (Qts) | 0.56 |
| Volum equivalent (Vas) | 4.64 litres |
| Mechanical Excursion (Xmech) | 57 mm |
| Excursió lineal (Xmax) | 20 mm |
| Frame Outer Diameter (OD) | 8.95 polzades |
| Frame OD with Gasket | 9.25 polzades |
| Diàmetre de muntatge | 8 polzades |
| Profunditat de muntatge | 6.69 polzades |
| Diàmetre del motor | 7 polzades |
| Motor Depth | 3.25 polzades |
| Desplaçament del woofer | 0.08 CuFt |
| Recommended Sealed Enclosure Volume | 0.4 - 0.8 CuFt |
| Recommended Ported Enclosure Volume | 0.75 - 1.25 CuFt |
| Material | Alumini (marc) |
| Pes de l'article | 29 lliures |
5. Configuració i instal·lació
Proper installation is crucial for the performance and longevity of your subwoofer. If you are unsure about any steps, consult a professional installer.
5.1 Enclosure Selection
The 2508G-D4 is designed to perform well in both sealed and ported enclosures. Refer to the specifications table for recommended enclosure volumes.
- Tancaments segellats: Offer tighter, more accurate bass response, suitable for musicality.
- Tancaments portats: Provide louder output and deeper bass extension, often preferred for SPL applications.
5.2 Wiring (Dual 4-Ohm Voice Coils)
The 2508G-D4 features dual 4-ohm voice coils, offering wiring flexibility. Ensure your amplifier is stable at the resulting impedance.
- Cablejat en paral·lel (2 ohms): Connect the positive terminals of both voice coils together, and the negative terminals of both voice coils together. Connect the combined positive to the ampla sortida positiva del lificador i la negativa combinada a la amplifier's negative output. This configuration presents a 2-ohm load to the ampmés viu.
- Cablejat en sèrie (8 ohms): Connect the positive terminal of one voice coil to the negative terminal of the other voice coil. Connect the remaining positive terminal to the ampla sortida positiva del lificador i el terminal negatiu restant al amplifier's negative output. This configuration presents an 8-ohm load to the ampmés viu.
Always use appropriate gauge speaker wire for your power levels and wire length. Consult your amplifier's manual for recommended wire gauges.
Figura 3: posterior view of the subwoofer, showing the dual voice coil terminals for wiring.
5.3 AmpCoincidència de lifier
Seleccioneu un amplifier that can provide the recommended RMS power (1200 Watts) at the impedance you choose (2-ohm or 8-ohm). Overpowering or underpowering can damage the subwoofer.
5.4 Muntatge
Mount the subwoofer securely into its enclosure using appropriate fasteners. Ensure a tight seal between the subwoofer frame and the enclosure baffle. The enclosure itself must be securely fastened within the vehicle to prevent movement.
6. Instruccions de funcionament
6.1 Període de rodatge
Allow a break-in period of approximately 20-30 hours of normal listening before operating the subwoofer at its maximum potential. This allows the suspension components to loosen and reach their optimal compliance.
6.2 Amplifier Gain and Crossover Settings
Configura correctament el teu amplifier's gain and crossover frequencies. The gain control is not a volume knob; it should be set to match the output voltage of your head unit. A low-pass filter (LPF) should be used to send only low frequencies to the subwoofer, typically between 60Hz and 100Hz, depending on your system and preferences.
6.3 Listening Levels
Avoid prolonged listening at extremely high volumes, which can lead to voice coil overheating and damage. If you notice distortion, reduce the volume immediately.
7. Manteniment
The DD Audio 2508G-D4 subwoofer requires minimal maintenance:
- Neteja: Periodically wipe the subwoofer cone and surround with a soft, dry cloth to remove dust and debris. Avoid using harsh chemicals or excessive moisture.
- Inspecció: Regularly inspect the speaker terminals, wiring, and mounting hardware for any signs of corrosion, looseness, or damage.
- Protecció del medi ambient: Protect the subwoofer from direct sunlight, extreme temperatures, and moisture, which can degrade materials over time.
8. Solució De Problemes
Si teniu problemes amb el subwoofer, consulteu els problemes i solucions més comuns següents:
| Problema | Causa possible | Solució |
|---|---|---|
| No hi ha so del subwoofer |
|
|
| So distorsionat |
|
|
| Sobreescalfament del subwoofer |
|
|
If these steps do not resolve the issue, contact DD Audio customer support or a qualified car audio technician.
9. Garantia i Suport
The DD Audio 2508G-D4 Subwoofer comes with a Garantia limitada. For specific details regarding warranty coverage, terms, and conditions, please refer to the warranty card included with your product or visit the official DD Audio weblloc.
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact DD Audio customer support directly. Ensure you have your product model number (2508G-D4) and proof of purchase available when contacting support.
