Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your DD Audio 510E-D2 10" Dual 2-Ohm 2100W Subwoofers. Please read this manual thoroughly before installation and use to ensure optimal performance and longevity of your product.
Safety Information
- Always disconnect the vehicle's battery before performing any electrical work.
- Ensure proper wiring and impedance matching to prevent damage to the subwoofers and amplifier.
- Avoid exposing subwoofers to excessive moisture or extreme temperatures.
- Securely mount the subwoofers to prevent movement during vehicle operation.
- Prolonged exposure to high sound pressure levels can cause permanent hearing damage.
Product Features
The DD Audio 510E-D2 subwoofers incorporate advanced design elements for high performance:
- Free Flow Cooling System
- High-temperature Voice Coil
- Dual Layer Spider System with Integrated Tinsel Leads
- Extended Pole Piece
- Double Stitched EROM Surrounds
- Fiberglass Loaded Non-Pressed Cones
- Embossed DDesign Magnet Boot
- 3-inch Voice Coils with 120oz Magnet Motors
- Increased Xmax (50% increase)

Image: Front and side view of the DD Audio 510E-D2 subwoofers, highlighting their robust construction.
Setup and Installation
Proper installation is crucial for the performance and longevity of your subwoofers. If you are unsure about any steps, consult a professional installer.
1. Enclosure Recommendations
For optimal performance, DD Audio recommends a ported enclosure with a volume of 1.25 - 1.5 cubic feet per subwoofer. Ensure the enclosure is well-constructed and sealed to prevent air leaks.
2. Mounting
- Ensure the mounting surface is sturdy and free from obstructions.
- Cut a circular opening with a diameter of 8.93 inches for each subwoofer.
- Secure the subwoofer to the enclosure using appropriate screws, ensuring a tight seal.
- The mounting depth required is 5.9 inches.

Image: Front view of the DD Audio 510E-D2 subwoofers, illustrating the cone and surround design.
3. Wiring
The 510E-D2 subwoofers are Dual 2-Ohm (D2) voice coil models. Proper wiring is essential to match the impedance requirements of your amplifier. Consult your amplifier's manual for compatible impedance loads.
Example Wiring for a Pair of D2 Subwoofers:
- 1 Ohm Final Load: Wire each subwoofer's voice coils in parallel (resulting in 1 Ohm per subwoofer). Then, wire both 1 Ohm subwoofers in parallel to the amplifier.
- 2 Ohm Final Load: Wire each subwoofer's voice coils in series (resulting in 4 Ohms per subwoofer). Then, wire both 4 Ohm subwoofers in parallel to the amplifier.
- 4 Ohm Final Load: Wire each subwoofer's voice coils in series (resulting in 4 Ohms per subwoofer). Then, wire both 4 Ohm subwoofers in series to the amplifier.
Always use appropriate gauge speaker wire for your power levels and cable runs. Ensure all connections are secure and insulated.

Image: Side view of the DD Audio 510E-D2 subwoofers, highlighting the magnet boot and terminal connections.
Operating Instructions
- Break-in Period: Allow a break-in period of approximately 20-30 hours of normal listening before operating the subwoofers at high power levels. This allows the suspension components to loosen and perform optimally.
- Gain Setting: Set your amplifier's gain correctly to match the output voltage of your head unit. Incorrect gain settings can lead to distortion and damage.
- Crossover Settings: Use a low-pass filter (LPF) on your amplifier or head unit to send only low frequencies to the subwoofers. A typical LPF setting for subwoofers is between 60Hz and 100Hz.
- Subsonic Filter: If your amplifier has a subsonic filter, set it slightly below your enclosure's tuning frequency to protect the subwoofers from over-excursion at very low frequencies.
- Monitoring: Listen for signs of distortion or stress from the subwoofers. If you hear distortion, reduce the volume or adjust your amplifier settings immediately.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the subwoofer cones and surrounds. Avoid using harsh chemicals or excessive moisture.
- Inspection: Periodically inspect the subwoofer surrounds, cones, and wiring connections for any signs of wear, damage, or corrosion.
- Environmental Protection: Protect the subwoofers from direct sunlight, extreme temperatures, and moisture, which can degrade materials over time.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No Sound | No power to amplifier, loose wiring, incorrect input signal, amplifier in protect mode. | Check amplifier power and ground connections. Verify RCA and speaker wire connections. Ensure amplifier is not in protect mode. |
| Distorted Sound | Amplifier gain too high, incorrect crossover settings, damaged subwoofer, amplifier clipping. | Reduce amplifier gain. Adjust LPF and subsonic filter settings. Inspect subwoofer for physical damage. |
| Weak Bass Output | Incorrect wiring impedance, phase issues, insufficient amplifier power, poor enclosure design. | Verify wiring impedance matches amplifier. Check phase setting on amplifier/head unit. Ensure amplifier provides adequate power. Review enclosure specifications. |
| Subwoofer Overheating | Overpowering, incorrect impedance, insufficient cooling, prolonged high volume use. | Reduce power. Verify impedance. Ensure adequate ventilation around the subwoofer and amplifier. |

Image: Top-down view of the DD Audio 510E-D2 subwoofers, showcasing the magnet boot design.
Specifications
| Feature | Detail |
|---|---|
| Model Name | 510E-D2 |
| Speaker Type | Subwoofer |
| Speaker Size | 10 Inches |
| Woofer Diameter | 10 Inches |
| Watts RMS | 700 Watts (per subwoofer) |
| Watts Peak | 2100 Watts (per subwoofer) |
| Impedance | Dual 2-Ohm (D2) |
| Voice Coil Diameter (VCD) | 3 Inches |
| Fs (Resonance Frequency) | 38 Hz |
| Qms (Mechanical Q) | 4.96 |
| Qes (Electrical Q) | 0.76 |
| Qts (Total Q) | 0.65 |
| Vas (Equivalent Volume) | 37.1 Liters |
| BL (Motor Strength) | 25 TM |
| Xmech (Mechanical Excursion) | 30 MM |
| Xmax (Linear Excursion) | 18 MM |
| Frame OD (Outer Diameter) | 10 Inches |
| Frame OD w/Gasket | 10.4 Inches |
| Mounting Diameter | 8.93 Inches |
| Mounting Depth | 5.9 Inches |
| Motor Diameter | 7 Inches |
| Motor Depth | 2.375 Inches |
| Magnet Weight | 120 Oz |
| Woofer Displacement | 0.7 CuFt |
| Recommended Ported Enclosure | 1.25 - 1.5 CuFt |
| Item Weight (Pair) | 38 Pounds |
| Connectivity Technology | RCA, Speaker Wire |
| Mounting Type | Car mount |
Warranty Information
The DD Audio 510E-D2 subwoofers come with a Limited Warranty. Please refer to the official DD Audio website or contact their customer support for specific terms and conditions regarding warranty coverage, duration, and claims procedures.
Typically, warranties cover manufacturing defects and do not cover damage caused by improper installation, abuse, or exceeding recommended power limits.
Customer Support
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact DD Audio customer support:
- Visit the official DD Audio website for support resources and contact information.
- Refer to your purchase documentation for reseller-specific support options.





