Introduction
The Sunfire SDS12 is a high-performance 12-inch powered subwoofer designed to deliver powerful and accurate bass for home theater and music systems. Featuring 600W of peak power from Sunfire's Class-D digital amplification and exclusive FFD™ technology, the SDS12 provides deep, impactful low frequencies with exceptional clarity and detail. This manual provides essential information for the proper setup, operation, and maintenance of your SDS12 subwoofer.
This image shows the front of the Sunfire SDS12 subwoofer, featuring its black cabinet and removable grille with the Sunfire logo prominently displayed at the top.
Key Features:
- 600 Watts of dependable, cool-running Sunfire bass.
- Compact cabinet design for its class.
- Sunfire’s proprietary FFD™ (Frequency Filtration Design) technology for low distortion and high-output performance.
- Optimized for both movies and music.
- Gold plated connections for reliable signal transfer.
Setup
1. Unpacking
Carefully remove the SDS12 subwoofer from its packaging. Retain all packing materials for future transport or storage. Inspect the subwoofer for any signs of damage during transit. If damage is found, contact your dealer immediately.
2. Placement
The placement of your subwoofer significantly impacts its performance. Experiment with different locations in your room to find the optimal spot. Consider the following:
- Corner Placement: Placing the subwoofer in a corner often maximizes bass output due to room gain, but can sometimes lead to boomy or uneven bass.
- Wall Placement: Placing the subwoofer along a wall, away from corners, can provide a more balanced bass response.
- Near Listening Position: Placing the subwoofer closer to your primary listening position can sometimes improve bass clarity and impact.
- Avoid Obstructions: Ensure the subwoofer's driver is not obstructed by furniture or other objects.
3. Connections
Before making any connections, ensure all audio equipment is turned off and unplugged from the power outlet.
- LFE/Subwoofer Output: Connect an RCA cable from the LFE or Subwoofer Output of your AV receiver or pre-amplifier to the LFE Input on the SDS12 subwoofer. This is the recommended connection for most home theater systems.
- Stereo RCA Inputs: If your receiver does not have a dedicated LFE output, connect stereo RCA cables from the pre-out (left and right) of your receiver to the Left and Right Line Inputs on the SDS12.
- Power Connection: Once audio connections are made, connect the supplied power cord to the SDS12's power inlet and then to a grounded AC power outlet.
Operating
1. Powering On/Off
The SDS12 features an auto-sensing power mode. When set to 'Auto', the subwoofer will automatically turn on when an audio signal is detected and enter standby mode after a period of inactivity. You can also manually turn the subwoofer on or off using the power switch on the rear panel.
2. Initial Settings
After connecting and powering on your subwoofer, adjust the following controls:
- Volume/Gain: Start with the volume control at its lowest setting. Play some audio and slowly increase the volume until the subwoofer blends seamlessly with your main speakers. The bass should be felt, not localized.
- Crossover Frequency: If using the LFE input, your AV receiver will manage the crossover. If using stereo RCA inputs, set the crossover frequency on the subwoofer to match the low-frequency extension of your main speakers. A common starting point is 80Hz.
- Phase Control: The phase control (0° or 180°) helps ensure the subwoofer's output is in phase with your main speakers. Experiment with both settings while listening to music with strong bass. Choose the setting that provides the most impactful and cohesive bass.
3. Optimizing Performance
Fine-tuning your subwoofer can significantly enhance your listening experience. Consider using your AV receiver's automatic room correction system (e.g., Audyssey, MCACC, YPAO) if available. For manual adjustments, listen to a variety of music and movie content to ensure the bass is tight, articulate, and well-integrated with your system.
Maintenance
Cleaning
To clean the cabinet of your SDS12 subwoofer, use a soft, dry cloth. For stubborn marks, a slightly damp cloth can be used, followed by a dry cloth. Avoid using harsh chemicals, abrasive cleaners, or solvents, as these can damage the finish.
Storage
If you need to store the subwoofer for an extended period, disconnect it from power, clean it, and ideally repack it in its original packaging to protect it from dust and physical damage. Store in a cool, dry place.
Troubleshooting
If you experience issues with your Sunfire SDS12 subwoofer, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No Sound |
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| Weak or Distorted Bass |
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| Humming or Buzzing Noise |
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If the problem persists after trying these solutions, please refer to the Support section.
Specifications
| Feature | Detail |
|---|---|
| Model | SDS12 |
| Speaker Maximum Output Power | 600 Watts (Peak) |
| Connectivity Technology | Wired (RCA) |
| Material | Composite |
| Color | Black |
| Product Dimensions | 20 x 19.5 x 20.8 inches |
| Item Weight | 38.8 pounds |
| Manufacturer | Sunfire |
| UPC | 748926529259 |
Warranty
The Sunfire SDS12 subwoofer comes with a Limited Warranty. Please refer to the warranty documentation included with your purchase for specific terms, conditions, and duration of coverage. Keep your proof of purchase for warranty claims.
Support
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact the retailer where you purchased the Sunfire SDS12 subwoofer or visit the official Sunfire support website for further assistance. Have your product model and serial number ready when contacting support.
