JL Audio SB-GM-SLVCC2/12TW3/BK Dual 12" Stealthbox 800W 2Ω 2007–2014 Chevy Silverado / GMC Sierra Crew Cab 010-03650-00 (94581)

JL Audio SB-GM-SLVCC2/12TW3/BK Stealthbox® is a vehicle-specific, under-seat subwoofer system engineered for 2007–2014 Chevrolet Silverado and GMC Sierra Crew Cab trucks. This Stealthbox installs under the rear seat to deliver deep, accurate bass while preserving rear-seat function and keeping the cabin clean and factory-integrated.

Power / Load: This system features (2) 12" JL Audio 12TW3-D8 subwoofers and is configured as a 2 Ω final load with 800 W RMS continuous power handling. Pair it with a JL Audio monoblock amplifier capable of delivering clean output into 2 Ω and set gain appropriately for an 800 W RMS / 2 Ω system.

Key Features

• Vehicle-specific JL Audio Stealthbox® subwoofer system for Silverado/Sierra Crew Cab trucks
• Installs under the rear seat for a factory-integrated look
• Loaded with (2) 12" JL Audio 12TW3-D8 thin-line subwoofers
• Sealed enclosure design for tight, controlled low-frequency response
• System power handling: 800 W RMS
• Final system impedance: 2 Ω

Vehicle Compatibility

2014 Chevrolet Silverado Crew Cab & GMC Sierra Crew Cab JL Audio Stealthbox Subwoofer Upgrade

This compatibility table lists exact year, make, and model applications for the SB-GM-SLVCC2/12TW3/BK. 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 2 Ω load, then set gain appropriately for an 800 W RMS system:

• JL Audio RD1000/1 – strong output and control into 2 Ω (set gain for 800 W RMS system power)
• JL Audio JD1000/1 – compact, efficient monoblock for 2 Ω operation (set gain for 800 W RMS system power)
• JL Audio XDM1000/1 – compact monoblock solution for 2 Ω systems (set gain for 800 W RMS system power)
• JL Audio HD1200/1 – premium monoblock with ample headroom (gain-limited to match 800 W RMS system power)

Technical Specifications

Ideal Applications

• High-output, fully integrated under-seat bass upgrade for Crew Cab trucks
• Systems requiring an 800 W RMS / 2 Ω sub stage with clean monoblock power
• Daily-driver truck builds where space and rear-seat function matter

What’s Included

• JL Audio Stealthbox® loaded enclosure (SB-GM-SLVCC2/12TW3/BK)
• (2) JL Audio 12" 12TW3-D8 subwoofers (installed)

Frequently Asked Questions

• Will this fit a 2014 GMC Sierra Crew Cab? Yes. The compatibility table above lists 2014 GMC Sierra Crew Cab 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 800 W RMS at 2 Ω. Gain setting and tuning matter.
• Is this a complete audio system? No. This listing is for the vehicle-specific SB-GM-SLVCC2/12TW3/BK 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 for Silverado/Sierra Crew Cab applications
• Correct 2 Ω monoblock matching guidance for this dual-sub Stealthbox system
• Installer-grade advice on wiring, integration, and gain structure
• Professional installation available in-store

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.