Introduction
This manual provides essential instructions for the proper installation, operation, and maintenance of your LASE XD-000002-00 Replacement Woofer. This 15-inch, 8-ohm speaker is designed as a replacement for QSC KW153 and K152 speaker systems. Please read this manual thoroughly before installation and use to ensure optimal performance and longevity of the product.

Figure 1: Front view of the LASE XD-000002-00 Replacement Woofer.
Safety Information
Always observe the following safety precautions to prevent damage to the speaker or injury to yourself:
- Ensure all power to the audio system is disconnected before attempting installation or maintenance.
- Handle the speaker with care. The magnet assembly is heavy.
- Wear appropriate personal protective equipment, such as gloves, during installation.
- Do not expose the speaker to excessive moisture or extreme temperatures.
- Verify correct polarity when connecting speaker wires to avoid phase issues and potential damage.
Setup and Installation
1. Unpacking
Carefully remove the LASE XD-000002-00 woofer from its packaging. Inspect the speaker for any signs of damage that may have occurred during transit. Retain the packaging for future transport or storage.
2. Compatibility
This woofer is designed as a direct replacement for the original woofers in QSC KW153 and K152 speaker models. Ensure your speaker cabinet is compatible with a 15-inch diameter woofer and has sufficient depth for the magnet assembly.
3. Mounting
The LASE XD-000002-00 woofer features a flush mount design. Follow these steps for installation:
- Remove the existing woofer from the speaker cabinet.
- Clean the mounting surface to ensure a good seal.
- Carefully place the new LASE woofer into the cabinet opening, aligning the mounting holes.
- Secure the woofer using appropriate screws, tightening them evenly to prevent warping of the speaker frame. Do not overtighten.

Figure 2: Angled view of the woofer, highlighting the mounting frame.
4. Wiring
The woofer has a nominal impedance of 8 Ohms. Connect the speaker wires from your amplifier or crossover network to the terminals on the back of the woofer. Ensure correct polarity: positive (+) to positive, and negative (-) to negative. Incorrect wiring can lead to poor sound quality or damage.

Figure 3: Rear view showing speaker terminals for wiring.
Operating Instructions
Once installed, the LASE XD-000002-00 woofer operates as part of your existing speaker system. Observe the following guidelines for optimal performance:
- Power Handling: The woofer has a power rating of 400W RMS and 800W Music Program. Ensure your amplifier's output power is within these limits to prevent damage.
- Volume Control: Avoid operating the speaker at excessively high volumes for extended periods, which can lead to distortion and premature wear.
- Recommended Uses: This woofer is suitable for various applications including home theater systems, karaoke machines, and professional audio equipment, particularly for music reproduction.
Maintenance
Proper maintenance ensures the longevity and performance of your woofer.
- Cleaning: Use a soft, dry cloth to gently wipe the speaker cone and frame. Avoid using harsh chemicals or excessive moisture.
- Inspection: Periodically check the speaker for any loose connections, tears in the cone, or damage to the surround. Address any issues promptly.
- Storage: If storing the speaker, keep it in a dry, temperature-controlled environment, ideally in its original packaging, to protect it from dust and physical damage.
Troubleshooting
If you encounter issues with your LASE XD-000002-00 woofer, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No Sound from Woofer | Loose or incorrect wiring, amplifier off, damaged speaker. | Check all speaker connections for proper polarity and secure fit. Ensure amplifier is powered on and functioning. Test with another known-good speaker if possible. |
| Distorted Sound | Overdriving the speaker, incorrect amplifier settings, damaged cone/voice coil. | Reduce amplifier volume. Check amplifier EQ and crossover settings. Inspect speaker cone and surround for physical damage. |
| Intermittent Sound | Loose connection, faulty cable. | Verify all connections are tight. Try a different speaker cable. |
If troubleshooting steps do not resolve the issue, please contact LASE customer support.
Specifications

Figure 4: Detailed view of the woofer's magnet structure.
| Model Name | XD-000002-00 |
| Speaker Type | Woofer |
| Nominal Basket Diameter | 15 inches |
| Nominal Impedance | 8 Ohms |
| Power Rating (RMS) | 400W |
| Music Program Power | 800W |
| Usable Frequency Range | 44Hz - 5kHz |
| Resonance (Fs) | 45Hz |
| Sensitivity (1W/1m) | 98.3 dB |
| Voice Coil Diameter | 2.5 inches (63.5mm) |
| Magnet Weight | 70 oz |
| Mounting Type | Flush Mount |
| Material | Metal |
| Product Dimensions | 15 x 15 x 6 inches |
| Item Weight | 13 Pounds |
| UPC | 647356206887 |
Warranty Information
This product comes with a Limited Warranty. For specific details regarding warranty coverage, terms, and conditions, please refer to the documentation provided with your purchase or contact LASE customer support directly. Keep your proof of purchase for warranty claims.
Customer Support
For technical assistance, replacement parts, or any questions not covered in this manual, please contact LASE customer support. Provide your product model number (XD-000002-00) and purchase date when seeking support.