1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Atrend 10SME 10-inch Single Sealed Shallow Mount Subwoofer Enclosure. This enclosure is designed to enhance your car audio system by providing a precise housing for a 10-inch shallow-mount subwoofer, delivering tight and accurate bass response.
The Atrend 10SME is engineered for performance and durability, featuring precision construction to ensure a rattle-free and noise-free listening experience, especially in space-limited installations.
2. Safety Information
- Always disconnect the vehicle's battery before performing any electrical work.
- Ensure all wiring connections are secure and properly insulated to prevent short circuits.
- Mount the enclosure securely within the vehicle to prevent movement during driving, which could cause injury or damage.
- Do not expose the enclosure to excessive moisture or extreme temperatures.
- Consult a professional car audio installer if you are unsure about any installation steps.
3. Package Contents
Please check the package for the following items:
- Atrend 10SME 10-inch Single Sealed Shallow Mount Subwoofer Enclosure
- Terminal Cup (pre-installed)
4. Specifications
The Atrend 10SME enclosure is designed with the following key specifications:
| Feature | Specification |
|---|---|
| Speaker Size Compatibility | 10 inches (Shallow Mount) |
| Subwoofer Cutout Diameter | 9.125 inches |
| Mounting Depth | 4.5 inches |
| Net Internal Volume | 0.51 cubic feet |
| Enclosure Type | Sealed |
| Material | High-Grade Medium Density Fiberboard (MDF) |
| Finish | OEM-Grade Charcoal Carpeting |
| Terminals | Nickel Finish Speaker Terminals |
| Height | 15.25 inches |
| Width | 20.125 inches |
| Depth | 5.125 inches |
Note: These dimensions are critical for proper subwoofer selection and vehicle fitment.

Figure 4.1: Enclosure Dimensions and Subwoofer Fitment Details
5. Setup and Installation
Proper installation is crucial for optimal performance and longevity of your subwoofer system. Follow these steps carefully:
5.1 Subwoofer Selection and Fitment
- Ensure your 10-inch shallow-mount subwoofer has a mounting depth of 4.5 inches or less and a cutout diameter compatible with 9.125 inches.
- Verify the subwoofer's recommended sealed enclosure volume matches or is close to the 0.51 cubic feet internal volume of this enclosure for best sound quality.
5.2 Preparing the Enclosure

Figure 5.1: Enclosure Construction and Features
- The enclosure is constructed from high-grade MDF with a 1-inch front baffle for rigidity. It uses aliphatic wood glue and brad nail joints for an airtight, vibration-free seal.
- Inspect the enclosure for any shipping damage or loose carpeting.
- If desired, you may add poly-fill (acoustic damping material) inside the enclosure to simulate a larger internal volume and potentially improve bass response.
5.3 Subwoofer Installation
- Mounting the Subwoofer: Carefully place your subwoofer into the cutout opening. Ensure it sits flush against the baffle. Use appropriate screws to secure the subwoofer to the enclosure. Do not overtighten.
- Wiring Connections: Connect your subwoofer's positive (+) and negative (-) terminals to the corresponding nickel finish speaker terminals on the enclosure. Ensure a tight and secure connection.

Figure 5.2: Subwoofer Installation and Enclosure Features
5.4 Vehicle Placement
- Due to its shallow design, this enclosure is ideal for placement in tight spaces such as under truck seats or in compact car trunks.
- Ensure the enclosure is placed in a location where it will not obstruct safety equipment or vehicle operation.
- Secure the enclosure to prevent it from shifting during vehicle movement. Use straps or brackets if necessary.
6. Operating the Subwoofer System
Once your subwoofer is installed in the Atrend 10SME enclosure and connected to an appropriate amplifier, you can begin enjoying enhanced bass in your vehicle.
- Amplifier Connection: Connect your amplifier's subwoofer output to the enclosure's terminals using appropriate gauge speaker wire. Refer to your amplifier's manual for correct wiring configurations (e.g., parallel, series, bridged).
- Initial Power-Up: Start with your amplifier's gain settings at minimum. Gradually increase the gain and adjust crossover frequencies to blend the subwoofer's output seamlessly with your main speakers.
- Tuning: Experiment with amplifier settings (gain, low-pass filter, bass boost) to achieve your desired bass response. The sealed design of the 10SME enclosure is optimized for tight, accurate, and musical bass.
7. Maintenance
The Atrend 10SME enclosure requires minimal maintenance to ensure its longevity and continued performance.
- Cleaning: The charcoal carpeting can be cleaned with a soft brush or vacuum cleaner to remove dust and debris. For stubborn stains, use a mild carpet cleaner sparingly and allow to air dry completely.
- Connection Checks: Periodically check all wiring connections to the enclosure and amplifier to ensure they remain tight and free from corrosion. Loose connections can lead to signal loss or damage.
- Enclosure Integrity: Inspect the enclosure for any signs of damage, such as cracks in the wood or peeling carpet, which could affect its sealed integrity. Address any issues promptly.
8. Troubleshooting
If you encounter issues with your subwoofer enclosure, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No Bass Output | No power to amplifier; incorrect wiring; amplifier in protect mode; subwoofer damaged. | Check amplifier power, ground, and remote turn-on connections. Verify speaker wire connections to subwoofer and amplifier. Check amplifier fuses. Test subwoofer with another known good amplifier if possible. |
| Weak or Distorted Bass | Incorrect amplifier gain settings; improper crossover settings; air leaks in enclosure; subwoofer not matched to enclosure volume; phase issues. | Adjust amplifier gain carefully. Set low-pass filter correctly. Inspect enclosure for air leaks (especially around terminals and seams) and seal if necessary. Ensure subwoofer is compatible with 0.51 cu. ft. sealed volume. Check subwoofer phase setting on amplifier. |
| Rattling or Buzzing Noise | Loose subwoofer mounting screws; enclosure not secured in vehicle; internal air leak; loose components inside enclosure. | Tighten subwoofer mounting screws. Securely mount enclosure in vehicle. Check for and seal any air leaks. Ensure no loose wires or debris are inside the enclosure. |
| Subwoofer Overheating | Underpowered amplifier; overdriven subwoofer; incorrect impedance match. | Ensure amplifier power matches subwoofer RMS rating. Avoid excessive gain or bass boost. Verify amplifier and subwoofer impedance compatibility. |
9. Warranty and Support
9.1 Limited Warranty
Atrend provides a limited warranty for this product. The warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims. For specific details regarding the duration and terms of your limited warranty, refer to the warranty documentation included with your purchase or visit the official Atrend website.
9.2 Customer Support
For technical assistance, troubleshooting not covered in this manual, or warranty inquiries, please contact Atrend customer support through their official website or the retailer where the product was purchased.
Atrend Official Store: Visit the Atrend Store on Amazon
