1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Power Acoustik SM.804N 8-inch Pro Audio Speaker. Please read this manual thoroughly before attempting to install or operate the speaker to ensure proper function and safety. This speaker is designed for car audio applications, delivering high-quality sound reproduction.
2. Safety Information
Always observe the following safety precautions during installation and operation:
- Disconnect the vehicle's battery negative terminal before starting any electrical work to prevent short circuits.
- Ensure all wiring is properly insulated and secured to prevent damage from vibration or sharp edges.
- Do not mount the speaker in locations that obstruct the driver's view or interfere with vehicle safety features.
- Use appropriate gauge wiring for speaker connections to handle the power output and prevent overheating.
- Avoid exposing the speaker to excessive moisture or extreme temperatures.
- Prolonged exposure to high volume levels can cause hearing damage. Adjust volume to a safe level.
3. Package Contents
Upon opening the package, verify that all items are present and undamaged:
- Power Acoustik SM.804N 8-inch Pro Audio Speaker (Sold Individually)
- Mounting hardware (screws, clips - may vary)
- User Manual (this document)
4. Key Features
The Power Acoustik SM.804N speaker incorporates advanced design and materials for optimal performance:
- Pressed Paper Cone for balanced sound reproduction.
- Woven Cloth Surround for durability and excursion.
- 2-inch Voice Coil on Kapton Former for high power handling.
- Quick Disconnect Terminals for easy wiring.
- Poly-Cotton Progressive Spider for controlled cone movement.
- Cast Aluminum Basket for rigidity and heat dissipation.
- Neodymium Magnet Motor Structure for powerful and efficient performance.
- Solid Aluminum Phase Plug for improved off-axis response.
5. Setup and Installation
Proper installation is crucial for the performance and longevity of your speaker. If you are unsure about any steps, consult a professional installer.
5.1 Mounting Location
Select a suitable mounting location in your vehicle. The speaker is designed for flush mount applications. Ensure there is sufficient depth (3.25 inches) and clearance behind the mounting surface for the speaker magnet and basket. Avoid areas exposed to direct sunlight or excessive moisture.
5.2 Mounting Procedure
- Carefully mark the mounting hole locations using the speaker as a template.
- Cut the speaker opening to the appropriate diameter.
- Drill pilot holes for the mounting screws.
- Connect the speaker wires to the quick disconnect terminals, ensuring correct polarity (+ to + and - to -).
- Place the speaker into the opening and secure it with the provided mounting screws. Do not overtighten.

Image 1: Front view of the Power Acoustik SM.804N 8-inch Pro Audio Speaker, showing the cone, surround, and phase plug. This view illustrates the primary sound-producing components.
5.3 Wiring Connections
The SM.804N speaker has an impedance of 4 ohms. Connect the speaker to an amplifier or head unit capable of safely driving a 4-ohm load. Ensure that the positive (+) terminal of the speaker is connected to the positive (+) output of the amplifier, and the negative (-) terminal of the speaker is connected to the negative (-) output of the amplifier. Incorrect polarity can lead to poor sound quality and reduced bass response.

Image 2: Rear view of the Power Acoustik SM.804N 8-inch Pro Audio Speaker, highlighting the quick disconnect terminals and the cast aluminum basket. This view is important for understanding wiring connections.
6. Operating Instructions
Once installed, the Power Acoustik SM.804N speaker will reproduce audio signals from your car's audio system. Follow these guidelines for optimal performance:
- Power Handling: The speaker has a maximum output power of 350 watts. Ensure your amplifier's output does not exceed this rating to prevent damage.
- Frequency Response: The speaker operates within a frequency range of 135 Hz to 8 kHz. For full-range sound, it is recommended to use a crossover to filter out frequencies below 135 Hz, protecting the speaker and improving overall sound clarity.
- Volume Control: Start with a low volume level and gradually increase it to your desired listening level. Avoid prolonged listening at extremely high volumes to prevent speaker damage and hearing loss.
- Audio Settings: Adjust your head unit's or amplifier's equalizer and sound settings to fine-tune the audio output to your preference.
7. Maintenance
The Power Acoustik SM.804N speaker requires minimal maintenance to ensure long-lasting performance.
- Cleaning: Periodically wipe the speaker cone and surround with a soft, dry cloth to remove dust and debris. Do not use harsh chemicals or abrasive cleaners.
- Inspection: Regularly inspect the speaker for any signs of damage, such as tears in the cone or surround, or loose connections. Address any issues promptly.
- Environmental Protection: While the speaker features a durable aluminum basket, it is not waterproof. Protect it from direct exposure to water or excessive humidity.
8. Troubleshooting
If you experience issues with your speaker, refer to the following common problems and solutions:
- No Sound:
- Check all wiring connections from the amplifier/head unit to the speaker for looseness or disconnections.
- Verify that the amplifier/head unit is powered on and functioning correctly.
- Ensure the audio source is playing and not muted.
- Distorted Sound:
- Reduce the volume level. Distortion often occurs when the amplifier is overdriven.
- Check for incorrect wiring polarity.
- Inspect the speaker cone and surround for any physical damage.
- Ensure the amplifier's gain settings are not set too high.
- Weak or No Bass:
- Verify correct wiring polarity.
- Check if the speaker is properly sealed in its enclosure (if applicable) or mounting location.
- Adjust bass settings on your head unit or amplifier.
If the problem persists after attempting these solutions, contact customer support or a qualified car audio technician.
9. Specifications
| Feature | Specification |
|---|---|
| Model Number | SM.804N |
| Speaker Type | Pro Audio Midrange Speaker |
| Speaker Size | 8 inches |
| Maximum Output Power | 350 watts |
| Impedance | 4 ohm |
| Frequency Response | 135 Hz - 8 kHz |
| Mounting Type | Flush Mount |
| Mounting Depth | 3.25 inches (8.25 cm) |
| Voice Coil | 2-inch on Kapton Former |
| Cone Material | Pressed Paper |
| Surround Material | Woven Cloth |
| Basket Material | Cast Aluminum |
| Magnet Structure | Neodymium |
| Product Dimensions (D x W x H) | 23.5 x 10.2 x 23.5 cm |
| Item Weight | 2.38 kg |
| Power Source | Amplifier or Head Unit |
10. Warranty and Support
Power Acoustik products are designed and manufactured to the highest quality standards. For information regarding warranty coverage, terms, and conditions, please refer to the warranty card included with your product or visit the official Power Acoustik website. For technical support or service inquiries, please contact your authorized dealer or Power Acoustik customer service.







