JL Audio SB-S-BRZFRS/10TW3 Stealthbox 10" 400W RMS (800W Peak Power Handling) 2 Ohms, Dual Voice Coil Shallow-Mount Car Subwoofer in Sealed Enclosure for 2013-2020 Subaru BRZ / 2013-2016 Scion FR-S / 2016-2020 Toyota 86
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What's Inside?
- • 10" Stealthbox Dual Voice Coil Shallow-Mount Car Subwoofer
- • (1) 10TW3-D4 subwoofer in a sealed enclosure
- • (1) black steel mesh woofer grille
- • Owner's Manual
Why Choose JL Audio SB-S-BRZFRS/10TW3 Stealthbox System?
DMA-optimized Motor Designs
JL Audio's patented 10TW3 thin-line driver is the engine inside this Stealthbox® system, and it produces spectacular results from its perch in the passenger side rear corner of the trunk. Your trunk remains completely useful and your installation is neat and secure. A grille is also included to protect your investment. The Hard Data: Contains one 10TW3-D4 subwoofer in a sealed enclosure. 400 watt power handling. Wired for 2 ohm mono. Installs in the passenger side of trunk compartment. Black steel mesh woofer grille is included.
Compact Footprint, Elite Punch
If you are looking to inject serious, hard-hitting bass into your sports coupe without sacrificing valuable trunk space, this custom-engineered subwoofer system is your ultimate ticket to audio paradise. Packed into an incredibly small sealed enclosure volume that leaves plenty of room for your daily gear, this powerhouse features a premium 10-inch thin-line driver engineered with patented concentric tube architecture and a floating cone attach method. Inside, a DMA-optimized motor design drives an injection-molded, mica-filled polypropylene cone and a rugged rubber surround, keeping your music incredibly tight, clean, and completely distortion-free.
Frequently Asked Questions (FAQ)
- • Which vehicle models is the SB-S-BRZFRS/10TW3 compatible with?
This Stealthbox is custom-engineered for 2013-2020 Subaru BRZ, 2013-2016 Scion FR-S, and 2017-2020 Toyota 86 models.
- • Where exactly does this enclosure mount in the trunk?
The enclosure is designed to mount securely in the passenger-side rear corner of the trunk, which allows you to retain maximum usable cargo space.
- • What are the power handling and impedance specifications?
It features a 10TW3-D4 subwoofer rated for 400 watts (RMS) and is wired internally to present a final 2-ohm mono impedance load to your amplifier.
- • Is the installation process difficult for a beginner?
Installation is rated as moderate; it requires some disassembly of trunk liner panels. While feasible for DIYers, professional installation is recommended to ensure proper fitment.
- • Why is it so critical to bolt the enclosure down securely?
Proper mounting is vital because a loose enclosure can become a serious safety hazard during sudden deceleration or collisions, and movement of the box will significantly degrade sub-bass performance.
- • Does the subwoofer come with a protective grille?
Yes, a durable black steel-mesh grille is included with the Stealthbox to protect the subwoofer cone from damage caused by shifting cargo.
- • Do I need to modify my factory trunk liner during installation?
Yes, you will need to cut a small 1/2-inch diameter hole in the passenger-side trunk liner to allow the mounting hardware to pass through and secure the box.
- • Is this subwoofer compatible with the 2022+ Toyota GR86 or Subaru BRZ?
No, this specific Stealthbox model is designed only for the 2013–2020 generation of these vehicles.
- • What kind of amplifier should I use with this system?
JL Audio recommends a high-quality monoblock amplifier capable of delivering 400 watts RMS, such as the XD300/1v2, to match the driver's power handling specifications.
Learn how to wire subwoofers

- Diameter : 10 Inch
- Impedance : 2 Ohm
- Peak Power Handling : 800 Watts
- Number Of Subwoofers : 1
- Vehicle Make : Subaru
- Vehicle Make : Scion
- Vehicle Make : Toyota
- RMS Power Handling : 400 Watts
Features:
- Patented "floating cone attach method" technology
- Injection molded, mica-filled polypropylene cone
- DMA-optimized motor designs
- No pole vent: permits mounting close to rear wall of enclosure
- Rubber surround
- Aluminum-alloy dust cap and rear cap with JL Audio logo
- Cast alloy frame
- Xmax: 15.2 mm
- Recommended power range: 200 - 400 watts RMS
- Very small sealed enclosure volume requirements
- RMS: 400 watts
- Wired to a 2 ohm load
- Very long linear excursion capability
- Patented "concentric tube" architecture
- Sensitivity: 82.10 dB
- UPC: 699440945646
- Weight: 25
- Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for repair within 1 year from the original date of purchase with proper return authorization.