1. Product Overview
The MTX Audio RT8PT is an 8-inch amplified and vented bass tube designed to enhance the low-frequency audio in your vehicle. This compact unit integrates a subwoofer and amplifier within a vented enclosure, providing a complete bass solution.
Image 1.1: Front view of the MTX Audio RT8PT powered subwoofer enclosure, showing the 8-inch subwoofer and the MTX Audio logo on the gray carpeted tube.
Key Features:
- Integrated 120 Watt RMS Amplifier: Provides efficient power to the subwoofer.
- 8-Inch High Output Subwoofer: Delivers clear and impactful bass.
- Vented Enclosure Design: Optimizes bass output and efficiency.
- High and Low Level Inputs: Allows connection to various audio sources.
- External Bass Control: Enables convenient adjustment of bass levels from the driver's seat.
- Durable Construction: Features a butyl rubber surround for subwoofer longevity and aviation-grade carpet for interior integration.
2. Installation and Setup
Proper installation is crucial for optimal performance and safety. If you are unsure about any steps, consult a professional installer.
2.1 Unpacking
Carefully remove all components from the packaging. Ensure the following items are present:
- MTX Audio RT8PT Powered Bass Tube
- External Bass Control (EBC)
- Mounting Straps
- Wiring Harnesses (Power, Ground, Signal)
2.2 Mounting the Subwoofer
Select a secure location in your vehicle, such as the trunk or behind a seat. Use the provided mounting straps to firmly secure the enclosure, preventing movement during vehicle operation.
Image 2.1: The MTX Audio RT8PT subwoofer enclosure securely placed in a car trunk, demonstrating its compact size and rugged construction.
2.3 Wiring Connections
All wiring should be performed with the vehicle's battery disconnected to prevent electrical shorts or damage.
- Power Connection (+12V): Connect an 8-gauge power wire from the vehicle's positive battery terminal to the +12V terminal on the subwoofer's amplifier panel. Install an appropriate fuse (not included) within 18 inches of the battery.
- Ground Connection (GND): Connect an 8-gauge ground wire from the GND terminal on the amplifier panel to a clean, unpainted metal surface on the vehicle's chassis. Ensure a solid electrical connection.
- Remote Turn-On (REM): Connect a remote turn-on wire from your head unit's remote output to the REM terminal on the amplifier panel. This wire signals the subwoofer to turn on and off with your head unit.
- Signal Input:
- Low-Level Input (RCA): If your head unit has RCA pre-outs, connect RCA cables from the head unit to the "Line In" RCA inputs on the subwoofer.
- High-Level Input (Speaker Level): If your head unit does not have RCA pre-outs, use the provided high-level input harness. Connect the speaker wires from your head unit's rear speaker outputs to the corresponding wires on the high-level input harness, then plug the harness into the "HLI" port on the subwoofer.
- External Bass Control (EBC): Plug the EBC cable into the "EBC Port" on the amplifier panel and mount the control knob in a convenient location near the driver.
Image 2.2: Rear panel of the MTX Audio RT8PT, showing the power, ground, remote, RCA line-in, high-level input (HLI), and external bass control (EBC) ports.
3. Operation
Once installed, you can power on your vehicle's audio system and begin adjusting the subwoofer for optimal sound.
3.1 Initial Power-Up
After connecting the battery, turn on your vehicle's ignition and head unit. The subwoofer should power on automatically via the remote turn-on signal.
3.2 Adjusting Settings
- Gain Control: The "Gain" knob on the amplifier panel adjusts the input sensitivity. Start with the gain at its minimum setting. Play music with a strong bass presence and slowly increase the gain until the bass sounds balanced with the rest of your audio system without distortion.
- Low Pass Filter (LPF): The "LPF" knob (variable, 50Hz-200Hz) controls the upper frequency limit the subwoofer will play. Set this to blend smoothly with your main speakers. A common starting point is 80Hz-100Hz. If your main speakers are small, you might set it higher; if they are large, you might set it lower.
- External Bass Control (EBC): Use the EBC knob to make real-time adjustments to the bass level from your driving position. This allows for quick customization based on music genre or personal preference.
4. Maintenance
Regular care will help maintain the performance and appearance of your RT8PT subwoofer.
- Cleaning: Use a soft, dry cloth to wipe down the enclosure. For stubborn dirt on the carpet, a slightly damp cloth can be used, but avoid excessive moisture. Do not use harsh chemicals or abrasive cleaners.
- Inspection: Periodically check all wiring connections to ensure they are secure. Verify that the mounting straps are tight and the enclosure is stable.
- Environmental Factors: Avoid exposing the subwoofer to extreme temperatures, direct sunlight for prolonged periods, or excessive moisture.
5. Troubleshooting
If you encounter issues with your RT8PT subwoofer, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from subwoofer |
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| Distorted or unclear bass |
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| Subwoofer turns on/off intermittently |
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6. Specifications
Detailed technical specifications for the MTX Audio RT8PT powered subwoofer enclosure.
Image 6.1: Diagram illustrating the dimensions of the MTX Audio RT8PT subwoofer enclosure: 21.25 inches (L) x 9.84 inches (W) x 9.84 inches (H).
| Feature | Specification |
|---|---|
| Model Name | RT8PT |
| Speaker Type | Subwoofer |
| Speaker Size | 8 Inches |
| Woofer Diameter | 8 Inches |
| Speaker Maximum Output Power | 240 Watts (MAX) |
| Amplifier RMS Power | 120 Watts |
| Frequency Response | 35 - 250Hz (Crossover: Variable, 50Hz - 200Hz, 12dB/Oct) |
| Input Voltage | 12 Volts |
| Connectivity Technology | Wired (RCA, High-Level Input) |
| Control Method | Remote (External Bass Control) |
| Product Dimensions (L x W x H) | 21.25" x 9.84" x 9.84" (54cm x 25cm x 25cm) |
| Item Weight | 19.45 Pounds (8.82 kg) |
| Recommended Wiring | 8 Gauge Power and Ground Wiring |
| UPC | 193802048193, 715442310036 |
7. Warranty Information
The MTX Audio RT8PT powered subwoofer enclosure comes with a limited warranty. For specific terms and conditions, please refer to the warranty card included with your product or visit the official MTX Audio website.
8. Customer Support
For technical assistance, installation questions, or warranty claims, please contact MTX Audio customer support. You can find contact information on the official MTX Audio website or through your authorized dealer.
Website: www.mtx.com
