1. Introduction
Thank you for choosing Audiobank AB674 6.5-inch 3-Way Coaxial Car Speakers. These speakers are designed to provide enhanced audio quality for your vehicle's sound system. This manual provides essential information for proper installation, operation, and maintenance of your new speakers.

Image 1.1: Front view of the Audiobank AB674 speaker, showing the 3-way design with woofer, midrange, and tweeter, along with a view of the speaker with its protective grill and a rear view displaying the product label.
2. Safety Information
Please read and understand all safety instructions before installing or operating these speakers. Failure to follow these guidelines may result in injury or damage to the product or vehicle.
- Professional Installation Recommended: If you are unsure about any aspect of installation, consult a qualified car audio technician.
- Power Handling: Do not exceed the speaker's rated power handling (600 watts peak, 200 watts RMS per pair) to prevent damage.
- Wiring: Ensure all wiring is correctly connected and insulated to prevent short circuits and electrical hazards. Use appropriate gauge speaker wire.
- Mounting: Securely mount speakers to prevent them from becoming loose during vehicle operation, which could cause injury.
- Volume Levels: Prolonged exposure to high volume levels can cause hearing damage. Adjust volume responsibly.
- Environmental Conditions: These speakers are not waterproof. Avoid exposure to water or excessive moisture.
3. Package Contents
Verify that all items are present in the package:
- 2 x Audiobank AB674 6.5-inch Coaxial Speakers
- 1 x Speaker Wire (set)
- 1 x Screws (set)
- 1 x User Manual (this document)
4. Setup and Installation
Proper installation is crucial for optimal performance. Refer to your vehicle's service manual for specific panel removal and speaker replacement procedures.
4.1 Speaker Dimensions
Before installation, confirm that the speaker dimensions are compatible with your vehicle's mounting locations.

Image 4.1: Diagram showing the dimensions of the Audiobank AB674 speaker, including a 6.5-inch diameter, 2.38-inch top-mount depth, 3.25-inch magnet depth, and 5.63-inch cutout diameter.
- Woofer Size: 6.5 inches (165 mm)
- Top-mount Depth: 2.38 inches
4.2 Mounting
- Carefully remove the existing speakers or access the speaker mounting locations in your vehicle.
- Position the Audiobank AB674 speaker into the opening. Ensure it fits correctly and does not obstruct any vehicle components.
- Use the provided screws to secure the speaker firmly in place. Do not overtighten.
- If applicable, attach the speaker grill.

Image 4.2: Front view of the Audiobank AB674 speaker without the protective grill, highlighting the polypropylene with MICA cone woofer and the piezoelectric tweeter.
4.3 Wiring Connections
Connect the speaker wires to your car audio system. Pay close attention to polarity (positive to positive, negative to negative).

Image 4.3: Rear view of the Audiobank AB674 speaker, showing the magnet structure and the wiring terminals for connection to the amplifier or head unit. The product label with model number and impedance is also visible.
- Identify the positive (+) and negative (-) terminals on both the speaker and your car's speaker wiring.
- Connect the positive terminal of the speaker to the positive output of your amplifier or head unit.
- Connect the negative terminal of the speaker to the negative output of your amplifier or head unit.
- Ensure all connections are secure and free from short circuits.
- The speakers have a 4-ohm impedance. Ensure your amplifier or head unit is compatible with this impedance.
5. Operating Instructions
Once installed and wired correctly, your Audiobank AB674 speakers are ready for use.
- Turn on your car's audio system.
- Start with the volume at a low level and gradually increase it to a comfortable listening level.
- Adjust the audio settings (bass, treble, balance, fader) on your head unit or amplifier to optimize sound quality to your preference.
- Avoid operating the speakers at excessively high volumes for extended periods to prevent damage.
6. Maintenance
To ensure the longevity and performance of your speakers, follow these simple maintenance guidelines:
- Cleaning: Use a soft, dry cloth to gently wipe the speaker cones and grills. Avoid using harsh chemicals or abrasive cleaners.
- Protection: Keep speakers free from dust, dirt, and debris. Ensure grills are properly installed to protect the speaker cones.
- Environmental Factors: Protect speakers from extreme temperatures and direct sunlight, which can degrade materials over time.
7. Troubleshooting
If you experience issues with your speakers, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from speakers |
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| Distorted sound |
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| Intermittent sound |
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If the problem persists after trying these solutions, contact Audiobank customer support or a qualified car audio technician.
8. Specifications
Technical specifications for the Audiobank AB674 6.5-inch 3-Way Coaxial Car Speakers:
| Model Name | AB674 |
| Speaker Type | 3-Way Coaxial Car Speaker |
| Woofer Size | 6.5 Inches (165 mm) |
| Tweeter Type | Piezoelectric Tweeter (1.19 Inches) |
| Power Handling (Peak) | 600 Watts (for two speakers) |
| Power Handling (RMS) | 200 Watts (for two speakers) / 100 Watts (per speaker) |
| Impedance | 4 Ohms |
| Frequency Response | 80-20,000 Hz |
| Sensitivity | 88dB |
| Cone Material | Polypropylene with MICA |
| Surround Material | Rubber Coated Cloth |
| Top-mount Depth | 2.38 Inches |
| Item Weight | 1.59 Kilograms (3.5 pounds) |
| Connectivity Technology | Coaxial, Wired |
| Water Resistance | Not Water Resistant |
9. Warranty and Support
Audiobank AB674 speakers come with a limited warranty. For specific warranty terms and conditions, please refer to the documentation included with your purchase or visit the official Audiobank website.
For technical support, troubleshooting assistance, or warranty claims, please contact Audiobank customer service through their official channels. Keep your proof of purchase for warranty validation.
10. Recycling and Disposal
Please dispose of this product responsibly according to local regulations. Do not dispose of electronic products with household waste. Contact your local authorities for information on electronic waste recycling programs.