Description
Included in this kit
This bundle includes a JL Audio SBX-GM-SLVCC4/12TW3 Stealthbox™ Enclosed Subwoofer For Chevrolet Silverado And Gmc Sierra Crew Cab Trucks: 1500 2019–up And 2500/3500 2020–up, and a JL Audio HD750/1:Monoblock Class D Wide-Range Amplifier 750 W.
1x JL Audio SBX-GM-SLVCC4/12TW3 Stealthbox™ Enclosed Subwoofer For Chevrolet Silverado And Gmc Sierra Crew Cab Trucks: 1500 2019–up And 2500/3500 2020–up (SBX-GM-SLVCC4/12TW3)
Stealthbox® Enclosed Subwoofer for Chevrolet Silverado and GMC Sierra Crew Cab
This JL Audio Stealthbox® enclosed subwoofer system is built specifically for Chevrolet Silverado and GMC Sierra Crew Cab trucks, combining a form-fitting enclosure with dual 12-inch TW3 thin-line subwoofers for strong sub-bass performance without giving up passenger comfort. The rugged sealed enclosure installs neatly under the rear seat and is designed to preserve key cabin functionality while keeping bass hidden and cleanly integrated.
Overview
Hidden Bass for Silverado and Sierra Crew Cab Trucks
This Stealthbox® system combines JL Audio thin-line subwoofer technology with a custom-molded enclosure designed specifically for late-model Chevrolet Silverado and GMC Sierra Crew Cab trucks. Its purpose-built shape allows it to fit under the rear seat while delivering substantially more low-frequency output than a typical factory system.
The enclosure houses two 12-inch TW3 thin-line subwoofers in a down-firing sealed design, keeping the installation discreet while maintaining passenger comfort and interior usability.
- Vehicle-specific Stealthbox® for Silverado and Sierra Crew Cab trucks.
- Dual 12" TW3 thin-line subwoofers in a sealed enclosure.
- Built for strong sub-bass output without a visible cargo-area box.
Fitment
Under-Seat Installation with Preserved Cabin Function
The enclosure is designed to install under the rear seat in Chevrolet Silverado and GMC Sierra full-size Crew Cab trucks. The provided fitment covers 1500 Crew Cab models from 2019-up and 2500/3500 Crew Cab models from 2020-up.
According to the provided product information, installation does not affect rear seat folding, reclining, or rear leg room, making it a clean upgrade for trucks that still need full passenger practicality.
- 1500 Crew Cab: 2019-up.
- 2500/3500 Crew Cab: 2020-up.
- Designed to preserve rear seat utility and passenger space.
Feature Highlights
What This Stealthbox® Adds to the Truck
Construction & Performance
Thin-Line Output Without Sacrificing Cabin Space
By using JL Audio TW3 thin-line subwoofers, this Stealthbox® is able to deliver meaningful sub-bass performance from a location that normally cannot accommodate conventional large-format enclosures. The sealed down-firing layout supports a discreet install while keeping bass concentrated inside the cabin.
- 2 x 12" TW3 thin-line subwoofers.
- Down-firing sealed enclosure format.
- Designed for strong bass in a space-efficient package.
Installation Package
Complete Vehicle-Specific System
The included package consists of the enclosed dual-subwoofer Stealthbox®, mounting hardware, brackets, and documentation. JL Audio also identifies this as the updated product replacing the discontinued earlier version for these truck applications.
- Includes enclosure, hardware, brackets, and documentation.
- Installs under rear seat.
- Updated SKU replaces prior discontinued version.
This Stealthbox® is described for Chevrolet Silverado and GMC Sierra full-size Crew Cab trucks: 1500 model years 2019-up and 2500/3500 model years 2020-up. It is intended to install under the rear seat without affecting seat folding, reclining, or rear leg room.
| Product | JL Audio Stealthbox® enclosed subwoofer for Chevrolet Silverado and GMC Sierra Crew Cab |
| Part Number | 010-04652-00 |
| Subwoofer Configuration | 2 x 12" TW3 thin-line subwoofers |
| Enclosure Type | Down-firing sealed enclosure |
| Power Handling | 800 watts RMS |
| Wired Impedance | 2 ohms |
| Vehicle Fitment | Chevrolet Silverado / GMC Sierra Crew Cab: 1500 2019-up, 2500/3500 2020-up |
| Install Location | Under rear seat |
| Includes | Enclosure, mounting hardware, brackets, and documentation |
| Country of Origin | Made in the U.S. with global components |
| Gift Box Dimensions | 58.3" x 28.3" x 14.6" (1,481 x 719 x 371 mm) |
| Gift Box Weight | 80.2 lbs (36.4 kg) |
1x JL Audio HD750/1:Monoblock Class D Wide-Range Amplifier 750 W (HD750/1)
HD750/1
Monoblock Class D Wide-Range Amplifier, 750 W x 1 @ 1.5-4 Ω
This ultra-compact monoblock amplifier employs our Single-Cycle Control switching design and R.I.P.S. technology to deliver 750 W of clean power into any impedance between 1.5 and 4 Ω, giving you the highest degree of flexibility in designing your subwoofer system. Tight power supply regulation keeps distortion down and maximizes your bass quality. From a pure sound quality perspective, we invite you to compare the real-world, in-car performance of this amplifier to any other amplifier on the market, of any type, at any price.
While targeted primarily to subwoofer applications, the HD750/1 is a wide-range amplifier and can also be used to drive high-performance mid-range speaker systems.
This amplifier features a brushed aluminum finish with black powder-coated cast alloy heat sinks and bottom panel. A black powder-coated, gasketed cover is also provided to protect the controls.
Rated Continuous (RMS) Power @ 14.4 V
| @ 4 Ω | 750 W RMS x 1 |
| @ 3 Ω | 750 W RMS x 1 |
| @ 2 Ω | 750 W RMS x 1 |
| @ 1.5 Ω | 750 W RMS x 1 |
Rated Continuous (RMS) Power @ 12.5 V
| @ 4 Ω | 750 W RMS x 1 |
| @ 3 Ω | 750 W RMS x 1 |
| @ 2 Ω | 750 W RMS x 1 |
| @ 1.5 Ω | 750 W RMS x 1 |
General Specifications
| Frequency Response | 6 Hz - 8 kHz (+0, -1dB) |
| S/N Ratio, referred to highest rated power | >110 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) |
| S/N Ratio, referred to 1 W (Main Channels) | >88 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) |
| Damping Factor @ 4 Ω | >500 / 50 Hz |
| Damping Factor @ 2 Ω | >250 / 50 Hz |
| THD+N @ Rated Power (Main Channels) | <0.03% @ 4 Ω |
| Input Voltage Range @ RCA Inputs | Switchable from 200 mV - 2 V RMS (Low) to 800 mV - 8 V RMS (High) |
| Min.Copper Power / Ground Wire Gauge | 4 AWG wire |
| Fuse Rating | 60 A (AFS, AGU or MaxiFuse™) |
Physical Specifications
| Height (H) | 1.93 in / 49 mm |
| Width (W) | 10.74 in / 273 mm |
| Depth (D) | 8.29 in / 211 mm |
| Net Weight | 6.6 lb / 2.99 kg |
Signal Processing
| Filter Mode(s) | Low-Pass or High-Pass |
| Filter Slope(s) | 12/24 dB/octave |
| Filter Frequency Range | 50 Hz - 500 Hz |
| Detented, Calibrated Filter Freq. Potentiometer | Yes |
| Filter Defeat Function | Yes |
| Infrasonic Filter | 30 Hz, defeatable |
| Bass Boost EQ | No |
| Output Polarity Switch | Yes |
| Remote Subwoofer Level Control | Optional (HD-RLC) |
| Remote Bass EQ Boost Control | No |
| Pass-Through Preamp Output | Buffered |