1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your Skar Audio SDR-12 D2 12-inch Dual 2 Ohm Car Subwoofer. Designed for powerful, low-frequency sound reproduction, this subwoofer features a high-flux ferrite motor and a 2.5-inch high-temperature 4-layer copper voice coil. Please read this manual thoroughly before installation and use to ensure optimal performance and longevity of your product.
2. Safety Information
WARNING: Improper installation or use can result in serious injury or damage to your equipment. Always consult a professional if you are unsure about any installation steps.
- Electrical Hazards: Disconnect the vehicle's battery before performing any electrical work. Ensure all wiring is properly insulated and secured to prevent short circuits.
- Hearing Protection: Prolonged exposure to high sound pressure levels can cause permanent hearing damage. Use appropriate hearing protection when operating the subwoofer at high volumes.
- Secure Mounting: Ensure the subwoofer and its enclosure are securely mounted within the vehicle to prevent movement during sudden stops or collisions.
- Ventilation: Ensure adequate ventilation around the subwoofer and amplifier to prevent overheating.
- Impedance Matching: Always match the subwoofer's impedance (Dual 2 Ohm) to your amplifier's output capabilities. Incorrect impedance can damage the amplifier or subwoofer.
3. What's in the Box
Upon opening your Skar Audio SDR-12 D2 package, you should find the following:
- Skar Audio SDR-12 D2 12" Dual 2 Ohm Car Subwoofer (1 unit)
Note: Additional components such as an enclosure, amplifier, wiring kit, and installation hardware are sold separately and are required for a complete system.
4. Setup and Installation
Proper installation is crucial for the performance and longevity of your subwoofer. It is highly recommended that installation be performed by a qualified car audio professional.
4.1. Enclosure Selection
The SDR-12 D2 subwoofer requires a suitable enclosure for optimal performance. Consult Skar Audio's recommended enclosure specifications for sealed or ported designs. The enclosure should be robust and free from air leaks.
4.2. Wiring and Impedance
The SDR-12 D2 features dual 2-ohm voice coils. This allows for various wiring configurations to achieve different final impedances, such as 1 ohm or 4 ohms, depending on your amplifier's capabilities. Refer to your amplifier's manual for compatible impedance loads.
Figure 1: Skar Audio SDR-12 D2 Subwoofer, showing the cone and surround. This view highlights the robust construction and design of the subwoofer.
Figure 2: Close-up of the wiring terminals on the Skar Audio SDR-12 D2 Subwoofer. These terminals are designed for secure and reliable electrical connections.
4.3. Amplifier Connection
- Connect the subwoofer's voice coils to your amplifier according to the desired impedance and the amplifier's specifications.
- Ensure all connections are tight and free from corrosion.
- Route power and signal cables away from each other to minimize noise interference.
4.4. Initial Settings
Before powering on, set your amplifier's gain to its minimum setting. Set the low-pass filter (LPF) to a suitable frequency (e.g., 80-100 Hz) and disable any bass boost or equalization for initial testing.
5. Operating Instructions
5.1. Break-in Period
Allow a break-in period of approximately 20-30 hours of normal listening before operating the subwoofer at maximum output. This allows the suspension components to loosen and perform optimally.
5.2. Adjusting Settings
- Gradually increase the amplifier's gain until the desired volume is achieved without distortion.
- Adjust the LPF to blend the subwoofer's output seamlessly with your main speakers.
- Use caution with bass boost features, as excessive boost can lead to distortion and damage.
Video 1: Skar Audio SDR Series Product Line-Up. This official video from Skar Audio showcases the SDR series subwoofers, including the SDR-12, highlighting their design and features.
6. Maintenance
- Regular Inspection: Periodically check all wiring connections for tightness and signs of wear or corrosion.
- Cleaning: Keep the subwoofer cone and surround free from dust and debris. Use a soft, dry cloth for cleaning. Avoid using harsh chemicals or excessive moisture.
- Environmental Factors: Protect the subwoofer from extreme temperatures, direct sunlight, and moisture.
7. Troubleshooting
If you experience issues with your subwoofer, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No Sound | Loose wiring, amplifier off, incorrect settings, blown fuse. | Check all connections, ensure amplifier is powered on, verify settings, inspect fuses. |
| Distorted Sound | Gain too high, incorrect LPF setting, damaged voice coil, poor power supply. | Reduce amplifier gain, adjust LPF, check power and ground connections, inspect subwoofer for damage. |
| Subwoofer Overheating | Insufficient ventilation, improper impedance, excessive power. | Ensure adequate airflow, verify impedance match, reduce power input. |
| Weak Bass | Incorrect enclosure volume, phase issues, low gain setting. | Verify enclosure volume, check phase setting on amplifier, increase gain gradually. |
8. Specifications
| Feature | Specification |
|---|---|
| Model Name | SDR-12 D2 |
| Speaker Type | Subwoofer |
| Subwoofer Diameter | 12 Inches |
| Peak Power | 1200 Watts |
| RMS Power | 600 Watts |
| Impedance | Dual 2 Ohm |
| Voice Coil Size | 2.5" 4-Layer High Temperature Copper |
| Frequency Response Range | 22 Hz - 300 Hz |
| Sensitivity (SPL) | 84.7 dB |
| Fs (Resonance Frequency) | 32 Hz |
| Xmax (One-way) | 13.5mm |
| Mounting Depth | 7.62" |
| Cone Material | Competition Grade Pressed Paper |
| Surround Material | High Roll Foam |
| Motor Type | Powerful High Flux Ferrite |
| Cooling Design | Advanced Air Flow |
| Product Dimensions | 12 x 12 x 8 inches |
| Item Weight | 18.56 Pounds |
| Connectivity Technology | Wired |
9. Warranty and Support
9.1. Warranty Information
The Skar Audio SDR-12 D2 Subwoofer comes with a Limited Warranty. Please refer to the official Skar Audio website or contact their customer service for detailed terms and conditions regarding warranty coverage, duration, and claims procedures.
9.2. Customer Support
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact Skar Audio customer support:
- Website: Visit the official Skar Audio website for support resources, FAQs, and contact information.
- Contact: Refer to the 'Contact Us' section on the Skar Audio website for phone numbers or email support.
