SKU: 59283966871

LAB OEM-Spec™ 0.80 ft^3 Sealed Shallow-Mount MDF Enclosure Box for Single JL Audio 12TW3 Subwoofer

Sale price$143.99 Regular price$159.99
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Description

LAB OEM-Spec™ 0.80 ft^3 Sealed Shallow-Mount MDF Enclosure Box for Single JL Audio 12TW3 SubwooferWhat exact subwoofer does this fit? This enclosure is precision built specifically for a single 12" JL Audio TW3 shallow mount subwoofer (models 12TW3 D4 or 12TW3 D8). The cutout diameter is perfectly matched at 11. 625" (11 5 8"). Will it fit in my vehicle's tight spaces? Yes, it is designed specifically for tight and stealthy applications. The exact external dimensions are 21. 25" W x 16" H x 6. 5" D, giving you a slim, 6. 5 inch deep footprint. How


What exact subwoofer does this fit?
This enclosure is precision-built specifically for a single 12" JL Audio® TW3 shallow-mount subwoofer (models 12TW3-D4 or 12TW3-D8). The cutout diameter is perfectly matched at 11.625" (11-5/8").

Will it fit in my vehicle's tight spaces?
Yes, it is designed specifically for tight and stealthy applications. The exact external dimensions are 21.25" W x 16" H x 6.5" D, giving you a slim, 6.5-inch deep footprint.

How is the performance and wiring?
This sealed design delivers tight, responsive bass and natural roll-off—ideal for sound quality (SQ) focused systems. It features an upgraded 2" round nickel-plated binding post for secure and reliable wiring connections.

   

OEM-Spec™ Enclosures: Purpose-Built for JL Audio®

   

Dropping a premium JL Audio® subwoofer into a cheap leaky box is a quick way to leave performance on the table. Our LAB OEM-Spec™ enclosures aren't trying to reinvent the wheel. Instead, they are precision-built tools manufactured right here in the USA to do exactly what JL Audio® intended.

   

We construct these with rock-solid 3/4” CNC-cut MDF and feature 1” or thicker front baffles on select models to support heavier motors. These enclosures follow JL Audio’s exact volumetric blueprints to the letter. By utilizing their highly efficient smaller-airspace designs, you get two very practical benefits. You get increased mechanical power handling to keep your sub safe from over-excursion, and you gain a significantly smaller footprint in your trunk.

   

Available in both ported and sealed configurations for most JL Audio® drivers, the OEM-Spec™ line delivers the accurate, hard-hitting bass JL is famous for at a price point that actually makes sense.

        

Why It Hits the Mark:

   
           
  • Factory-Tuned Precision: Built exclusively to JL Audio® factory specs for optimal Thiele/Small (T/S) parameter matching.
  •        
  • Heavy-Duty Construction: 100% 3/4” CNC-cut MDF with ultra-thick front baffles on select models for maximum structural integrity.
  •        
  • American Made: Designed, cut, and assembled in the USA for strict quality control.
  •    

Technical Specifications:
  • JL Audio® designed TW3 12-inch sealed shallow-mount woofer enclosure
  • Built using JL Audio®'s recommended sealed box design for a single 12" JL Audio® TW3 sub (12TW3-D4 / 12TW3-D8)
  • Constructed of 0.75" CNC-cut high-grade MDF
  • High-grade black automotive carpet finish
  • Upgraded 2" round nickel-plated binding post
  • Made in California, U.S.A.

  • Enclosure volume: 0.80 ft^3 (net internal)
  • F3: 37.99Hz
  • Fc: 46.97Hz
  • Qtc: 0.9426
  • Sub cutout diameter: 11.625" (11-5/8")
  • Dimensions: 21.25"W x 16"H x 6.5"D

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 59283966871

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Dave Wright
Lowell, US
★★★★★ 5
STA-BIL Start Your Engines! Because Sometimes Engines Need a Pep Talk
Size: 2 fl oz
So, STA-BIL Start Your Engines! is basically that friend who shows up uninvited but actually saves the day. You know, the one who doesn’t ask questions and just gets your engine running when it’s feeling moody or sluggish. Does it work? Of course it does. Like, “put a little in your gas tank, say a quick prayer, and voila!” kind of work. Suddenly your car remembers how to start, and you feel like a mechanic genius without actually lifting a wrench. It’s simple, it’s reliable, and it doesn’t judge you for letting your gas sit around until it gets that “I don’t want to cooperate” attitude. Pros: Makes your engine start like it just had an espresso shot. Easy to use — even if you’re barely awake in the morning. No weird smells or smoke signals, just clean, smooth starting. Cons: Won’t fix your “I forgot to put gas in” problem. Sadly, can’t make your car drive itself to work (yet). You might start relying on it a little too much — hey, no judgment. Final Verdict: ⭐️⭐️⭐️⭐️⭐️ – 5 stars. If your engine is feeling lazy, this stuff just works. It’s like a pep talk in a bottle for your car. Highly recommended for anyone who’s ever cursed their ignition.
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Reviewed in the United States on October 17, 2025
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Nobody
Charlottesville, US
★★★★★ 5
GREAT PROPDUCT
Size: 2 fl oz
EXCELLENT
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Reviewed in the United States on January 27, 2026
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Amazon Customer
Belleville, US
★★★★★ 4
Cleans Out Working Carburetors
Size: 2 fl oz
I recommend this product for engines that will in fact start but not run well. I highly recommend it for that specific purpose, which it is designed for. It cleans the inner workings of the carburetor. Of course, you will have a cleaner carburetor if you take it apart and clean it with proper tools and a proper carburetor cleaner. You spray it in the gas tank, start the engine, and let it run a bit. It will not start an engine with a totally plugged up carburetor. Nothing is going to do that. Nor is it a fuel stabilizer, as one previous reviewer seemed to think. Nor is it a product to be used to bring life back to stale gasoline, as another reviewer seemed to think. The only thing to do with stale gasoline is drain it out and pitch it. Nor is it a product to be used for cleaning a carburetor you have taken apart to clean. You should use a proper carburetor cleaner for that purpose. I've given it four stars because it cleans out mildly plugged up carbs. It is not a miracle solution for really neglected carbs as the name suggests.
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Reviewed in the United States on April 12, 2020
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Ray
Alexandria, US
★★★★★ 5
Helps fixing small engines
Size: 2 fl oz
⭐⭐⭐⭐⭐⭐⭐
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Reviewed in the United States on May 16, 2026
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JustAGeek
Draper, US
★★★★★ 5
It works like magic, saved me $150.
Size: 2 fl oz
I filled 1/4 tank of gas into my snowblower which I could not started, sprayed about 15 seconds of Start Your Engines, rock snowblower to mix well, let it sat for an hour. I pulled string and yet couldn't start engine. Unscrewed spark plug and spray some into cylinder, put the spark plug back and pull the string. ENGINE STARTED!!! SAVED ME AT THE LEAST $150.
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Reviewed in the United States on March 1, 2026

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