1. Introduction
This manual provides detailed instructions for the proper installation, operation, and maintenance of your Skar Audio SK8M 8-inch 2-Way Marine Full Range Coaxial Speakers. Please read this manual thoroughly before attempting installation or operation to ensure optimal performance and longevity of your speakers. These speakers are designed for marine and powersports environments, offering robust construction and high-quality audio reproduction.
2. Safety Information
- Always wear appropriate safety gear, including eye protection, during installation.
- Ensure all power to the audio system is disconnected before beginning installation to prevent electrical shock or damage to equipment.
- Verify proper wiring polarity to avoid damage to speakers and amplifier.
- Do not expose speakers to extreme temperatures or direct sunlight for prolonged periods when not in use.
- Avoid operating speakers at excessively high volumes for extended durations, as this can cause hearing damage or speaker damage.
- Ensure mounting locations are structurally sound and free from obstructions.
3. Package Contents
Verify that all items are present in your package:
- Skar Audio SK8M 8" 2-Way Marine Full Range 500 Watt Coaxial Speakers (Pair, White)
- Mounting Hardware (gaskets and screws)
- Instruction Manual (this document)

Image: A pair of Skar Audio SK8M 8-inch marine coaxial speakers in white, showing the front grilles.

Image: Mounting hardware for the Skar Audio SK8M speakers, including two black gaskets and sets of stainless steel screws.
4. Specifications
| Model Name | SK8M |
| Speaker Type | 2-Way Coaxial Full Range Marine Grade |
| Speaker Size | 8 Inches |
| Peak Power (Pair) | 500 Watts |
| RMS Power (Pair) | 250 Watts |
| Impedance | 4 Ohms |
| Sensitivity | 90.5 dB |
| Frequency Response | 49 Hz - 20,000 Hz |
| Woofer Material | Premium Microfiber Composite Mineral Filled Mid-Woofer Cone with Butyl Surround |
| Tweeter Type | 1" Marine Grade Silk Dome Tweeter |
| Voice Coil | 1.5" High Temperature SV Voice Coil |
| Water Resistance Level | Waterproof |
| Product Dimensions (D x W x H) | 4.05"D x 8.48"W x 5.29"H |
| Item Weight | 14.22 pounds |
5. Installation
Proper installation is crucial for the performance and durability of your marine speakers. If you are unsure about any step, it is recommended to seek professional assistance.
5.1. Choosing a Mounting Location
- Select a location that is structurally sound and can support the weight of the speakers.
- Ensure there is sufficient clearance behind the mounting surface for the speaker's depth.
- Consider speaker placement for optimal sound dispersion and listening experience.
- Avoid locations where speakers might be directly exposed to excessive impact or physical damage.
5.2. Mounting Procedure
- Prepare the Mounting Surface: Using the provided cutting template (if applicable), mark the cutout area on your chosen mounting surface. Carefully cut the opening.
- Wire Connection: Connect the speaker wires from your amplifier to the terminals on the back of the speaker. Ensure correct polarity (+ to + and - to -) to prevent phase issues and ensure proper sound reproduction.
- Secure the Speaker: Place the speaker into the cutout. Use the provided gasket between the speaker frame and the mounting surface to ensure a watertight seal. Secure the speaker using the supplied stainless steel screws, tightening them evenly to prevent distortion of the speaker frame.

Image: Rear view of a Skar Audio SK8M speaker, showing the magnet housing and terminal connections, with the model number label visible.
6. Operation
Once installed, your Skar Audio SK8M speakers are ready for operation. These speakers are designed to be powered by an external amplifier.
- Amplifier Connection: Ensure your amplifier is correctly connected to your audio source and the speakers. Refer to your amplifier's manual for specific connection details.
- Power On: Turn on your audio source and amplifier.
- Volume Adjustment: Start with the volume at a low level and gradually increase it to your desired listening level. Avoid setting the amplifier gain too high, as this can lead to distortion and potential speaker damage.
- Audio Settings: Adjust bass, treble, and balance settings on your audio source or amplifier to achieve your preferred sound profile.
7. Maintenance
To ensure the longevity and optimal performance of your Skar Audio SK8M marine speakers, follow these maintenance guidelines:
- Cleaning: Regularly clean the speaker grilles and surrounds with a soft, damp cloth. Avoid using harsh chemicals, abrasive cleaners, or high-pressure water sprays, as these can damage the marine-grade materials.
- Inspection: Periodically inspect the speaker cones, surrounds, and grilles for any signs of wear, tear, or damage. Check mounting screws for tightness.
- Environmental Protection: While designed for marine environments, prolonged exposure to direct sunlight, salt spray, or extreme weather conditions can still affect performance over time. Consider using protective covers when the boat or vehicle is stored.
8. Troubleshooting
If you experience issues with your Skar Audio SK8M speakers, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| No Sound |
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| Distorted Sound |
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| Intermittent Sound |
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9. Warranty Information
Skar Audio SK8M speakers come with a Limited Warranty. For specific details regarding warranty coverage, duration, and claims procedures, please refer to the warranty card included with your purchase or visit the official Skar Audio website.
10. Support
For further assistance, technical support, or inquiries not covered in this manual, please contact Skar Audio customer service through their official website or authorized dealers. When contacting support, please have your product model (SK8M) and purchase information readily available.