How to Add a Subwoofer to a 2024 Toyota Tacoma (Non-JBL) with the Beat-Sonic ENA-3T3

The 2024 Toyota Tacoma without JBL has a capable factory audio system, but it has limits. Factory amplification can only push so much before the bass loses punch, and there's no dedicated low-end to speak of. Adding a subwoofer fixes that, and if you already have a Beat-Sonic ENA-3T3 amplifier installed, most of the hard work is already done.

In this video, our team walks through a real customer install on a 2024 Toyota Tacoma (larger screen, non-JBL). The customer came in with the ENA-3T3 already in place and pre-wired. All we needed to do was extend the RCA cables, run a remote wire to the rear, pull a clean power run from the battery, and connect everything at the subwoofer amplifier. Here's how it went.

Why the ENA-3T3 Makes Subwoofer Integration Simple

The Beat-Sonic ENA-3T3 Encore Alpha amplifier is a plug-and-play amplifier kit for 2018+ Toyota models without JBL. It plugs directly into the factory harness behind the head unit — no wire cutting, no splicing. What makes it ideal for a subwoofer upgrade is the built-in RCA subwoofer output and remote turn-on wire. You don't need a line output converter or any extra signal processing. The outputs are already there.

On the ENA-3 series, the subwoofer RCA outputs feed a dedicated low-frequency signal to a separate subwoofer amplifier, which then powers the sub independently. The remote wire tells the sub amp to switch on and off with the head unit. It's a clean, expandable system from the start.

Subwoofer Placement in a 2024 Toyota Tacoma

Compact 8-inch under-seat subwoofers are a popular choice for trucks, but the 2024 Tacoma's front seats don't leave enough clearance for most compact units. In this install, we placed the subwoofer behind the rear passenger seats. It's out of the way, protected, and still close enough to the back of the cab to keep cable runs manageable.

Placement behind the rear seats also keeps the subwoofer amp accessible if you ever need to adjust gain settings or troubleshoot. It's a practical location that works well for this platform.

Extending the RCA Cables

The customer had already pre-run RCA cables from the back of the ENA-3T3 toward the rear of the cab, but they weren't long enough to reach the subwoofer. We pulled the head unit, disconnected the existing RCAs, and swapped in a longer pair. This is the most common adjustment you'll run into when adding a subwoofer to an existing amplifier install — always measure your full cable run before purchasing.

Removing the head unit also gave us a chance to check the amplifier mounting and gain settings, which is worth doing on any pre-existing install before expanding the system.

Running Power from the Battery

The subwoofer amplifier needs its own dedicated power run from the battery. We routed the power wire through the factory firewall grommet on the driver's side — you can locate it by feeling above the foam panel near the firewall. Wrapping the wire end in electrical tape before threading it through makes the pull much cleaner.

At the battery, we installed an inline fuse holder using a ring terminal on the positive terminal. The fuse protects the circuit — if something gets overloaded, the fuse blows before anything else does. Mount the fuse holder close to the battery, away from the main terminal that gets replaced over time, and route the wire along the fender toward the firewall before dropping into the cab.

Always use electrical tape on wire connections in the cabin. Other tape types can fail over time in the heat of a vehicle interior.

Extending the Remote Wire

The remote wire from the ENA-3T3 also needed to be extended to reach the rear of the cab. We used a quick-connect crimp connector to splice in additional wire length. For thin remote wires, twist the wire end to thicken it before inserting it into the connector — this ensures a solid contact and a secure crimp. The remote wire terminal on the subwoofer amp is typically labeled "REM" or "RM."

Routing Wires Through the Cab

The 2024 Tacoma has a built-in clip channel on the B-pillar that makes wire routing easy. You can snap the wire bundle in and break off the cover cleanly once everything is routed. The door sill panels are flexible enough to tuck wires underneath without full removal — just flex them slightly and push the wires in. We bundled the power wire, RCA cables, and remote wire together with zip ties and ran everything in one clean pass from the firewall to the rear of the cab.

Connecting at the Subwoofer Amplifier

At the subwoofer amp, connections are straightforward: RCA1 and RCA2 from the ENA-3T3 sub outputs, remote wire to the REM terminal, ground wire to a clean chassis bolt under the rear floor, and positive power from the fuse run. When tightening terminal screws, always press straight down on the wire. Working at an angle strips the wire and can make removal nearly impossible.

For the ground, we used a chassis bolt under the rear floor panel. The factory speaker wires in that area use the same chassis ground, so any bare-metal bolt nearby is a solid reference point.

With all gains set to maximum for the initial test, we powered on the system and confirmed the blue LED on the subwoofer amp lit up. From there, it's a matter of dialing in the gain and crossover settings to find the right balance between the mains — powered by the ENA-3T3 — and the subwoofer. The result on this install was clean, well-balanced low-end that complemented the rest of the system without overpowering it.

What You Need for This Install

To replicate this install on your 2024 Toyota Tacoma, you'll need the Beat-Sonic ENA-3T3 amplifier (or have it already installed), a compact powered subwoofer or a passive subwoofer with a dedicated sub amp, a longer set of RCA cables to reach the rear of the cab, a remote wire extension, a power wire with an inline fuse, ring terminals, zip ties, electrical tape, a Phillips screwdriver, an Allen wrench set, and a set of magnetic sockets. The magnetic sockets are worth emphasizing — a dropped bolt inside the engine bay or behind a panel is a significant time loss.

2024 Toyota Tacoma Subwoofer Options

The ENA-3T3 is designed for 2018+ Toyota models without JBL and pairs well with any powered subwoofer that accepts RCA input. The compact 8-inch subwoofer used in this install works well for the Tacoma's cab size — large enough for real bass output, small enough to fit behind the rear seats without affecting passenger space.

If you want to go further with your 2024 Tacoma audio upgrade, the Beat-Sonic ENX-T330 DSP amplifier is built specifically for this vehicle. It includes a built-in Digital Signal Processor with vehicle-specific tuning preloaded, six RCA outputs including two dedicated subwoofer pre-outs, and free downloadable software for advanced custom tuning. For Tacoma owners who want precise control over time alignment, crossover points, and equalization, the ENX-T330 is the more complete solution.

For 2020–2023 Tacoma owners, the ENX-T315 is the equivalent DSP option for that generation.

Does the ENA-3T3 Work on JBL-Equipped Tacomas?

The ENA-3T3 is compatible with JBL-equipped Tacomas, but JBL head units process audio differently and the aftermarket subwoofer connected through the RCA outputs will not respond to volume control in the same way. A separate bass volume control knob is recommended for JBL applications.

Installing a Subwoofer Without Replacing the Head Unit

One of the most common questions we get is whether you can add a subwoofer to a 2024 Toyota Tacoma without replacing the factory head unit. The answer is yes, and the ENA-3T3 is how you do it cleanly. The factory head unit stays in place. The amplifier connects through the factory harness. The subwoofer gets its signal from the amp's RCA outputs. No modifications to the factory system are required, and the installation is fully reversible.

This is the approach Beat-Sonic products are designed around — meaningful audio improvement through plug-and-play integration rather than replacing or modifying the factory system.

Plug and Play Amplifiers for Toyota and Other Vehicles

Beat-Sonic manufactures plug-and-play amplifier kits for a range of Toyota, Lexus, Honda, Subaru, Nissan, Chevy, and Mazda models. The full amplifier lineup covers both the Encore Alpha (ENA series) for straightforward amplification and the Encore X (ENX series) for DSP-equipped solutions with advanced tuning capability.

If you have questions about which amplifier is right for your vehicle or how to expand your existing setup, leave a comment on the video or visit our channel for more installation guides.