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JL Audio Stealthbox® SB-GM-3GSLVCNSL/10TW1

Custom fit subwoofer enclosure for select 2014-2018 Sierra 1500 / 2500 HD / 3500 HD and Silverado 1500 / 2500 HD / 3500 HD Front Bucket Seats and OEM Console

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• Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with Single JL Audio 10TW1-2
• 300 Watts RMS Power Handling
• Stealthbox Installs Under Center Console

See compatible vehicles Learn more about the sbgm3gslvcnsl10tw1
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Current Promotions (1 offer)


Get the most out of your Loaded Enclosure with the NVX SDTK20. Eliminates road noise, quiet vibrations, and increase the sound quality and output of audio system, 50%. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

JL Audio Stealthbox® SB-GM-3GSLVCNSL/10TW1

40% off


Priced separately $1,249 98

Promo Savings of $20 00

Total price:

$1,229 98

Description


JL Audio brand icon

Authorized dealer

Subwoofer Features:

  • One 10" TW1 (Thin-Line) Series Shallow Mount Subwoofer
  • Power Handling:
    • RMS: 300 watts
  • Recommended Power Range: 75 - 300 watts
  • Recommended amplifier: JL Audio XD300/1v2
  • Impedance: Single 2-Ohm
  • Injection molded, mica-filled polypropylene cone
  • Rubber surround
  • No pole vent: permits mounting close to rear wall of enclosure.
  • Ultra-compact sealed enclosure volume requirements
  • Long linear excursion capability
  • DMA-optimized motor designs
  • Engineered Lead-Wire System
  • Patented concentric tube architecture
  • Patented floating cone attach method technology
  • Cast alloy frame with flat edges for tight driver grouping
  • Steel mesh grille included with each driver
  • Precision-built in USA at JL Audios Miramar, Florida factory
  • Mounting depth: 4.36 "
  • Cutout dimensions: 9.0625 "
  • Free Air Resonance (Fs): 41.45 Hz
  • Sensitivity: 82.50 dB
  • Xmax: 10.0 mm
  • Equivalent Compliance (Vas): 10.31 L
  • Frequency response: ~26 ~ 200 Hz

Enclosure Features:




Color Matching your Stealthbox®:

Some JL Audio Stealthboxes are not designed to perfectly match OEM colors. Some colors will contrast with OEM colors in order to provide a stylish setup. If you are looking for the closest color match, please select the JL Audio Stealthbox® color that is as close to your OEM color as possible and indicate your vehicle's interior color when ordering

Carpet Color Grade Identification
Perfect Actual exact factory color and texture (dye lot may differ slightly)
Excellent Precise color match, different texture
Good Very close to factory shade/tone
Fair Same basic color, different shade/tone
Poor Same basic color, substantially different shade/tone
Contrasts Not intended to match any factory color. Usually black. Good choice if no Good or better color match exists

Message from JL Audio: Our goal is to provide all Stealthbox® products in colors that match well with factory interiors. Because of availability issues with carpet colors, some Stealthbox® colors are not precise matches at this time. The match grades above give you an indication of how precise our color match is for each Stealthbox® model.

PDF icon JL Audio SB-GM-3GSLVCNSL/10TW1 owner’s manual

Compatible Vehicles


Please use our Fitment Guide to determine specific compatibility for the submodel and audio features

The vehicle you have selected 1979 Mazda 626 is not compatible. Change vehicle or See list of compatible similar products


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Specifications & Details


Subwoofer Specifications
Series
TW Series
Subwoofer Design
Round / Circle
Voice Coil(s)
Single
Impedance (Per Voice Coil)
2 ohm
RMS Power Handling
300 watts
Total RMS Power Handling
300 watts
Woofer Surround
Rubber
Woofer Composition
Mica Injected Polypropylene - MIPP
Sensitivity
82.5 dB
Frequency Response
26 - 200 Hz
Xmax (millimeters)
10 mm
Subwoofer Size
10"
Enclosure Specifications
Number of Subwoofers
1
Box Style/Shape
Vehicle Specific
Box Finish
Carpet
Box Type
Sealed
Warranty and Return Policy
Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

SB-GM-3GSLVCNSL/10TW1

Weight:

24.20lbs

Internal SKU:

sbgm3gslvcnsl10tw1

Internal Product ID:

142893

Customer Ratings & Reviews


JL Audio Stealthbox® SB-GM-3GSLVCNSL/10TW1 thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Reviews

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Previous Installer Approved

Any DIY person that has electrical knowledge can install this setup as long as you don’t have Bose. I recently took out my 8” screen out of my 2500 Denali with Bose and upgraded it to an alpine ilx-511 halo, bypassed the factory amplifier, installed a 5 channel alpine amp for new door speakers and decided not to keep the factory subwoofer and installed this beast. I would recommend this to anyone who wants to keep their backseat storage space and wants it to sound like they have 2 - 12” subwoofers.

By Anonymous on September 25, 2023 Checkmark Icon Verified purchase

22 found this helpful


Fits nice and snug under center concel

Installed in a 2019 silverado 2500hd Duramax with factory bose 7ch system. Fit exactly as it should in place of factory bose woofer. Used a audio control lc2i pro and an audio control epic 1500. Sounds amazing. Would never guess it's just a singal 10TW1 in a about .3 cubic foot enclosure. It blows my mind how loud it is for how small it is. Always love JL and how good the sound quality is. I get a kick out of people looking for a box under the rear seat and all they find is just tools and straps. "Sorry I buy real stuff not walmart junk"

By Justin on May 7, 2026 Checkmark Icon Verified purchase
2018 Chevrolet Silverado 1500




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