JL Audio SB-T-TCMAX/10TW3 10" Stealthbox 400W 4Ω 2014–2021 Toyota Tundra CrewMax 010-03661-00 (94616)

JL Audio SB-T-TCMAX/10TW3 is a vehicle-specific Stealthbox® subwoofer system built for the 2014–2021 Toyota Tundra CrewMax (4-Door). It installs behind the rear seat-backs against the back wall of the cab to deliver deep, accurate bass while keeping the cabin usable and maintaining an OEM-style fit. This system is loaded with a single 10" JL Audio 10TW3 subwoofer driver.

Power / Load: 400 W RMS continuous power handling with a 4 Ω nominal impedance. Pair it with a JL Audio monoblock amplifier that can deliver clean power into a 4 Ω load, then set gain correctly for controlled output and long-term reliability.

Key Features

• Vehicle-specific JL Audio Stealthbox® enclosed subwoofer system
• Fits behind rear seat-backs for an integrated, space-efficient install
• Loaded with (1) JL Audio 10TW3 subwoofer driver
• Continuous power handling: 400 W RMS
• Nominal impedance: 4 Ω
• Sealed enclosure design
• Requires no permanent modifications for installation

Vehicle Compatibility

2021 Toyota Tundra CrewMax 4-Door JL Audio Stealthbox Subwoofer Upgrade

This compatibility table lists exact year, make, and model applications for the SB-T-TCMAX/10TW3. It is built so shoppers and AI shopping tools can match vehicle-specific JL Audio Stealthbox fitment without relying only on broad “up” year ranges. Always verify trim, factory audio configuration, seat/cargo layout, and installation location before ordering.

Recommended Amplifier Matching (Sold Separately)

For best performance, pair this Stealthbox with a JL Audio monoblock amplifier capable of delivering clean power into a 4 Ω load:

• JL Audio XDM600/1 – 400 W RMS @ 4 Ω (ideal match for 400 W / 4 Ω systems)
• JL Audio VX600/1i – 400 W RMS @ 4 Ω with integrated DSP for advanced tuning
• JL Audio XDM1000/1 – 600 W RMS @ 4 Ω (gain-limited for additional headroom)
• JL Audio RD1000/1 – 600 W RMS @ 4 Ω (gain-limited for additional headroom)
• JL Audio JD1000/1 – 600 W RMS @ 4 Ω (gain-limited for additional headroom)
• JL Audio HD750/1 – 750 W RMS @ 4 Ω (gain-limited for additional headroom)

Technical Specifications

Ideal Applications

• Truck bass upgrade that preserves usable cabin space
• OEM-style behind-seat integration for CrewMax interiors
• Clean, controlled low-end for daily driving

What’s Included

• Vehicle-specific JL Audio Stealthbox® loaded enclosure
• Mounting hardware and brackets specific to the Stealthbox application (as supplied by JL Audio)
• Owner’s documentation and installation information

Frequently Asked Questions

• Will this fit a 2021 Toyota Tundra CrewMax 4-Door? Yes. The compatibility table above lists 2021 Toyota Tundra CrewMax 4-Door as a fitment for this JL Audio Stealthbox. Verify trim, factory audio configuration, seat/cargo layout, and installation location before ordering.
• What amplifier should I use with this Stealthbox? Use the Recommended Amplifier Matching section above and match the amplifier to 400 W RMS at 4 Ω. Gain setting and tuning matter.
• Is this a complete audio system? No. This listing is for the vehicle-specific SB-T-TCMAX/10TW3 Stealthbox subwoofer system. A complete installation may require an amplifier, power wiring, signal integration, tuning, and installation accessories.

Why Buy From MCOR Automotive

• Fitment-first support to ensure you buy the correct Stealthbox for your exact truck
• Expert JL Audio system planning (amp matching, wiring, tuning guidance)
• Professional installation available in-store
• Careful handling and packaging for high-value enclosures

Stealthbox Fitment & Return Policy

Stealthbox products are vehicle-specific and non-returnable. Customers should verify fitment before ordering. If unsure, use our Fit Guide or contact us through the chat button before purchase.

Authorized Retailer & Warranty

MCOR Automotive is an authorized JL Audio / Garmin retailer. Products purchased from MCOR include applicable manufacturer warranty coverage when installed and used according to manufacturer guidelines.