Adding a Subwoofer & Amp to a Tesla Model 3 - Step-by-Step Install Guide for NVX BOOST Sub Box

Introduction

This tutorial provides a comprehensive guide on how to install the NVX BOOST Amplified Bass & System Upgrade Package in a Tesla Model 3. Whether you're looking to enhance your audio experience or simply want to learn more about the installation process, this guide breaks down each step for a successful DIY installation.

Step 1: Gather Your Tools and Equipment

Before starting the installation, ensure you have the following tools and components ready:

• NVX BOOST Sub Box with 10" Dual 4 Ohm Subwoofer
• NVX XLCA2 2-Channel Line Out Converter
• NVX VADM1 500W RMS Class D Monoblock Amplifier
• NVX XKIT82 Amplifier Installation Kit
• Basic tools:
  • 10mm and 13mm sockets
  • Panel removal tools
  • Wire strippers and connectors
  • Zip ties
  • Electrical tape

Step 2: Remove Trunk Liner and Panels

To access the installation area, start by removing the trunk liner and panels:

1. Remove Upper Trim Panel

   • Use a panel removal tool to pop off the upper trim panel on both the left and right sides of the trunk.
   • Remove any existing panel clips.

2. Remove Lower Trim Panel

   • Pull off the gasket around the lower panel.
   • Lift the panel up to detach it from the clips.

3. Remove Lower Trunk Liner

   • Fold down the back seats to access the lower trunk liner.
   • Remove the necessary clips to free the liner from the vehicle.

Step 3: Access the Amplifier and Wiring Locations

With the trunk panels removed, locate key components for wiring:

• If your Model 3 has a premium audio system, find the factory subwoofer enclosure and amplifier in the right rear corner.
• If you have the base audio system, you will need to tap into the audio signal from the front left and right kick panels.

Step 4: Remove the Back Seat

To access the power source for the amplifier:

1. Remove Seat Cushion

   • Locate and flip the lever underneath the seat to lift it up.
   • Disconnect the wire harness from both sides.

2. Remove Seat Back

   • Pull forward to detach the clips.
   • Remove any bolts securing the seat belt if necessary (optional).
   • Lift the seat back out of the vehicle.

Step 5: Connect Power and Ground for the Amplifier

With the back seat removed, you can connect the power:

1. Locate the 12V Power Source

   • Remove the foam cover to access the power output that runs to the battery.
   • Connect the power wire from the VADM1 amplifier here.

2. Ground the Amplifier

   • Use a factory grounding point, ensuring it's cleaned for a solid connection.
   • Connect the ground wire from the amplifier to this point.

Step 6: Install the Amplifier and Line Out Converter

1. Mount the XLCA2

   • Find a suitable location near the factory amplifier to mount the XLCA2.
   • Connect the audio signal from the factory amplifier to the XLCA2.

2. Wire the VADM1 Amplifier

   • Connect the RCA cables from the XLCA2 to the VADM1.
   • Ensure the remote wire from the XLCA2 is connected to the VADM1 for automatic turn-on.

Step 7: Install the NVX BOOST Sub Box

1. Prepare for Installation

   • Slightly enlarge the existing hole in the trunk liner as necessary.
   • Install the provided jack nut to secure the subwoofer box.

2. Mount the Sub Box

   • Align and secure the NVX BOOST enclosure in place.
   • Tighten the 10mm bolt to ensure it's snug.

Step 8: Finalize Connections and Test

1. Connect Speaker Outputs

   • Run the speaker wires from the amplifier to the subwoofer in the NVX enclosure.

2. Check All Connections

   • Double-check all power, ground, and signal connections.
   • Ensure everything is securely attached and tucked away.

3. Power On and Test the System

   • Start the vehicle and test the audio system.
   • Make adjustments as needed using the factory head unit or remote bass knob if installed.

Conclusion

You have now successfully installed the NVX BOOST Amplified Bass & System Upgrade Package in your Tesla Model 3. Remember to reverse the disassembly process to reassemble any panels and trim pieces. Enjoy your enhanced audio experience, and if you encounter any issues, consider consulting a professional or reaching out to NVX's technical support for assistance.