How to Install a Loaded Subwoofer Enclosure in a Jeep Gladiator

Quick answer

Installing a loaded subwoofer enclosure in a Jeep Gladiator JT is a straightforward process, especially with a model like the AudioControl TXJTD8 designed to fit under the rear seat. This guide walks you through the key steps, from preparation to final connection.

Installation steps

1. Gather your tools and parts: You’ll need a socket set, wire strippers, a power drill with bits, zip ties, and a wiring kit (if not included). The AudioControl TXJTD8 is a loaded enclosure, so you don’t need to buy separate subwoofers or an enclosure box. Having a wiring kit with 14-16 gauge speaker wire and a power wire kit rated for your amplifier’s current will save a trip to the store.
2. Disconnect the battery: Always disconnect the negative terminal of your Jeep Gladiator’s battery before working with any electrical components. This prevents accidental shorts while running power wires. Wrap the disconnected terminal in a cloth or tape to prevent it from accidentally touching the battery post.
3. Run the power and RCA cables: Route the power wire from the battery through the firewall (use an existing grommet or drill a new hole with a rubber grommet). Run RCA cables from your head unit or amplifier to the rear seat area. Keep power and signal cables separated to avoid noise. A common mistake is routing power and RCA cables together, which can cause audible hum. Use separate paths or keep them at least 12 inches apart.
4. Position the enclosure under the rear seat: Slide the AudioControl TXJTD8 under the rear seat. It is designed to fit flush, but you may need to temporarily remove the seat cushion or tilt it forward for easier access. Secure the enclosure using the mounting holes or straps provided (if any); otherwise, use heavy-duty zip ties or brackets to prevent movement. The Gladiator’s rear seat has limited clearance—check that the enclosure doesn’t interfere with the seat folding mechanism before tightening everything down.
5. Connect the speaker wires: Connect the speaker wires from the amplifier to the terminal cup on the enclosure. The TXJTD8 is pre-wired internally, so you only need to match positive and negative terminals. Use banana plugs or bare wire—ensure a tight connection. Double-check polarity: reversed wires will cause the subwoofers to play out of phase, reducing bass output.
6. Reconnect the battery and test: Reconnect the negative battery terminal. Power on your system and play a bass-heavy track at low volume. Gradually increase volume to check for distortion or rattles. If you hear buzzing, check for loose mounting or nearby objects vibrating. If the subwoofer sounds weak or produces no bass, check the phase switch on the amplifier or the wiring polarity. A simple phase reversal may fix it.

Product facts

• AudioControl TXJTD8 Dual 8" Loaded Subwoofer Enclosure - Jeep Gladiator JT 2020+: Designed for seamless integration beneath your Jeep Gladiator’s rear seat, the AudioControl TXJTD8 is a dual 8" vented subwoofer enclosure built with durable fiberglass. This means you get a vehicle-specific fit that simplifies installation under the rear seat, and the fiberglass construction is lightweight yet strong enough for daily use.