Introduction
Thank you for choosing the KUERL K-603A 6.5 Inch Car Audio Coaxial Speaker. This manual provides essential information for the proper installation, operation, and maintenance of your new car speakers. Designed for high-fidelity sound reproduction, these speakers will elevate your in-car audio experience with clear, powerful sound.
Figure 1: KUERL K-603A High-Fidelity Coaxial Speaker
Safety Information
- Always disconnect the car battery's negative terminal before starting any electrical work.
- Ensure all wiring connections are secure and properly insulated to prevent short circuits.
- Do not expose speakers to excessive moisture or extreme temperatures.
- Consult a professional car audio installer if you are unsure about any installation steps.
- Avoid listening to audio at excessively high volumes for prolonged periods to prevent hearing damage.
Package Contents
Please check the package for the following items:
- 2 x KUERL K-603A 6.5 Inch Coaxial Speakers
- 1 x Product Manual
- Wiring Accessories (as pictured)
Figure 2: Contents of the KUERL K-603A Speaker Package
Specifications
Refer to the table below for detailed technical specifications of the KUERL K-603A speakers:
Figure 3: KUERL K-603A Product Information Table
| Attribute | Value |
|---|---|
| Product Model | K-603A |
| Woofer Size | 6.5" |
| RMS Power | 60W |
| MAX Power | 120W |
| Frequency Response | 65Hz-20KHz |
| High Pitch (Voice Coil Diameter) | 25mm |
| Magnet Weight | 8.845oz |
| Magnet Size | 80*32*12mm |
| Impedance | 4 Ω |
| Sensitivity | 91dB/m/w |
| Drum Paper Material | PP |
| Voice Coil Material | ASV |
| Edgefold Material | Nitrile rubber |
| Net Weight (A pair) | 1.4kg |
| Gross Weight (A pair) | 1.8kg |
| Package Size | 380x190x95mm |
| Voltage | 12 V |
| Speaker Type | Coaxial speakers |
| Certification | CE |
Note: All data are manually measured, allowing slight errors. Please refer to the actual product.
Figure 4: Speaker Dimensions and Weight Details
Setup and Installation
Proper installation is crucial for optimal sound performance. It is recommended to have these speakers installed by a qualified professional. If you choose to install them yourself, please follow these general guidelines:
- **Preparation**: Gather necessary tools (screwdrivers, wire strippers, crimpers, drill, safety glasses). Disconnect the car battery's negative terminal.
- **Remove Old Speakers**: Carefully remove the existing speakers from your car's door panels or mounting locations.
- **Check Fitment**: Ensure the KUERL K-603A speakers (165mm diameter, 63mm depth) fit into the existing speaker openings. Modifications may be required for some vehicles.
- **Wiring**: Connect the speaker wires to the appropriate terminals on the KUERL K-603A speakers. Pay attention to polarity (positive to positive, negative to negative). The rear view of the speaker shows the terminals clearly.
- **Mounting**: Secure the speakers into the mounting locations using appropriate screws. Ensure they are firmly seated to prevent vibrations.
- **Test Connections**: Before reassembling the car interior, temporarily reconnect the car battery and test the speaker functionality with your car's audio system.
- **Reassemble**: Once confirmed working, reassemble the car's interior panels.
Figure 5: Speaker Rear View with Wiring Terminals
Figure 6: KUERL Speakers Installed in a Car Interior
Operating Instructions
Once installed, the KUERL K-603A speakers operate as part of your car's existing audio system. No special operation is required for the speakers themselves.
- **Power On**: Turn on your car's ignition and car audio head unit.
- **Audio Source**: Select your desired audio source (radio, CD, Bluetooth, etc.).
- **Volume Control**: Adjust the volume using your car's head unit controls. Start at a low volume and gradually increase to a comfortable listening level.
- **Audio Settings**: Utilize your car's equalizer and audio settings to fine-tune the sound to your preference. The high-quality rubber edge and raised tweeter design contribute to a smooth, clear, and metallic sound.
Figure 7: High-Quality Rubber Edge for Durability
Figure 8: Raised Tweeter Design for Smooth and Clear Sound
Maintenance
To ensure the longevity and optimal performance of your KUERL K-603A speakers, follow these simple maintenance tips:
- **Cleaning**: Gently wipe the speaker grilles and cones with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials.
- **Protection**: Keep the speakers free from dust, dirt, and debris. Ensure they are not exposed to direct sunlight for extended periods, which can degrade materials.
- **Inspection**: Periodically check wiring connections for any signs of looseness or corrosion.
Troubleshooting
If you encounter any issues with your speakers, refer to the following troubleshooting guide:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from speakers |
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| Distorted or poor sound quality |
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| One speaker not working |
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User Tips
- **Vehicle Compatibility**: These speakers are designed to be compatible with most car models. However, for specific vehicle fitment (e.g., VW Bora 1998-2005), it is highly recommended to measure your car's speaker mounting depth and diameter to ensure a proper fit before installation. The K-603A speakers have a diameter of 165mm and a depth of 63mm.
- **Break-in Period**: Like many audio components, speakers may benefit from a 'break-in' period. Play them at moderate volumes for the first few hours of use to allow the components to settle and achieve their optimal sound.
- **Professional Installation**: While DIY installation is possible, professional installation can ensure correct wiring, optimal placement, and prevent potential damage to your vehicle's electrical system or the speakers themselves.
Warranty and Support
KUERL products are manufactured to high-quality standards. For any issues or support inquiries, please contact your retailer or the manufacturer's customer service. Keep your purchase receipt as proof of purchase for warranty claims.
This product is certified with CE, indicating compliance with health, safety, and environmental protection standards for products sold within the European Economic Area (EEA).




