JL Audio SB-SMRT-4-2/8W3v3 Stealthbox 8" 250W RMS (500W Peak Power Handling) 4 Ohms, Single Voice Coil Component Car Subwoofer in Sealed Enclosure for 2008-2015 Smart fortwo
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What's Inside?
- • 8" Stealthbox Single Voice Coil Component Car Subwoofer
- • Owner's Manual
Why Choose JL Audio SB-SMRT-4-2/8W3v3 Stealthbox System?
100% Fiberglass Sealed Enclosure
Facing the obvious limitations of space and functionality presented by this diminutive automobile, the JL Audio Stealthbox® design team had to reach deep into their bag of tricks. Their solution is a robust JL Audio 8-inch subwoofer tucked neatly beneath the dashboard in a 100% fiberglass sealed enclosure, resulting in zero loss of useful space. So, fill the CD changer or plug in your MP3 player and enjoy impressive JL Audio sound quality on every drive.
Premium Bass Performance
Built for durability, it features a mineral-filled polypropylene cone, rubber surround, vented reinforcement collar, Floating Cone Attach Method, and Surround Stress Relief Design to ensure long-lasting performance and exceptional sound quality. With a single 4-ohm impedance, 150–500 watts recommended power handling, 10 mm Xmax, and 83.24 dB sensitivity, this enclosure produces clean, hard-hitting bass that enhances every drive.
Frequently Asked Questions (FAQ)
- • Will the JL Audio SB-SMRT-4-2/8W3v3 fit every Smart Fortwo?
No. This Stealthbox is designed for specific Smart Fortwo model years and body styles. Always verify vehicle compatibility before purchasing.
- • Why is my 8W3v3 producing very little bass after installation?
Incorrect amplifier settings, reversed speaker polarity, or improper wiring are the most common causes. Check all connections before assuming the subwoofer is faulty.
- • What amplifier is recommended for the SB-SMRT-4-2/8W3v3?
An amplifier delivering about 250 watts RMS at the correct impedance provides excellent performance. Proper gain tuning is equally important.
- • Why does the subwoofer distort when I raise the volume?
This is usually caused by amplifier clipping or excessive bass boost. Lowering the gain and adjusting the crossover often solves the problem.
- • Can I replace the factory-installed 8W3v3 with a larger JL Audio subwoofer?
No. The enclosure is engineered specifically for the included 8W3v3 driver. A different subwoofer may not fit or perform correctly.
- • Why do I hear rattling inside the car when the bass hits?
Loose trim panels, license plates, or interior components are usually responsible. Inspect nearby panels and tighten any loose hardware.
- • Does this Stealthbox reduce cargo space in the Smart Fortwo?
It is designed to maximize bass while minimizing the impact on available cargo space. Most owners retain the majority of their storage area.
- • Do I need to break in the 8W3v3 subwoofer?
Yes. Many users notice smoother bass performance after several hours of normal listening as the suspension loosens naturally.
Learn how to wire subwoofers
- Diameter : 8 Inch
- Sensitivity : 83.24 dB
- Impedance : 4 Ohm
- Peak Power Handling : 500 Watts
- Number Of Subwoofers : 1
- Enclosure Type : Sealed
- Vehicle Make : Smart
- RMS Power Handling : 250 Watts
Features:
- RMS: 500 watts total / 250 watts each
- Elevated frame cooling enhances power and sound quality
- Vented reinforcement collar improves rigidity and stability of the cone, spider, and voice coil
- DMA-optimized, long linear excursion capability to virtually eliminate distortion and increase sound output
- Rubber surround
- Floating Cone Attach Method allow the cone and surround to be aligned independently
- Surround stress relief design
- Impedance: Single 4 ohm
- Recommended Power Range: 150 - 500 watts
- Mineral-filled polypropylene cone woofer
- Insert molded suspension, coil, and terminal-sub assembly
- Xmax: 10 mm
- Sensitivity: 83.24 dB
- UPC: 699440944489
- Weight: 35
- 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.
