Proline X Single 10" Sealed Micro Series System | Loaded with JL Audio 10TW3
$ 699.99
$ 799.99
12% OFF
Last One
Subwoofer Specific
Downfire Subwoofer Box and Enclosures
Down-firing enclosures with ABS feet setting 1.75 inches of floor clearance. Single, dual and triple, 10 to 15 inch, CNC-cut in Tullahoma.
Decision Shortcut
Find Your Match
Curated picks matched to common build goals
Best Value
Proline X
Proline X P10-S DF | Single 10" Sealed Down Fire Subwoofer Enclosure
Universal cutout, no driver-specific tooling. The cheapest way into a proper down-fire cabinet.
$ 169.99
View DetailsBest for Shallow Builds
Proline X
Performance Optimized Down Fire Sealed 12" Enclosure | Wavtech thinPRO12
Cut for a slim-profile 12 where floor-to-seat clearance is the constraint.
$ 269.99
View DetailsBest for SQ
Proline X
Performance Optimized Down Fire Sealed 12" Enclosure | Morel Ultimo SCX122
Internal volume cut to the SCX122's published parameters for a sealed alignment.
$ 269.99
View DetailsBest High-Output
Proline X
Performance Optimized Down Fire Sealed Dual 12" Enclosure | JL Audio 12TW3
Two 12s in isolated chambers, each cut to the TW3's published parameters.
$ 299.99
View DetailsBest for Cargo Bays
Proline X
Performance Optimized Down Fire Sealed 15" Enclosure | ResoNix GUS-15
Performance Optimized 15 inch cut to the GUS-15's published sealed alignment at 1.41 cubic feet. The most displacement in the range for a cargo bay that has the floor space.
$ 329.99
View DetailsBest Direct Fit
Proline X
Proline X Bronco Edition Dual 12" Down-Firing Sealed Subwoofer Enclosure
Stack-fab vehicle-specific cabinet cut to the Bronco cargo floor.
$ 499.99
View DetailsShop the Lineup
Proline-X Micro Series Sealed Dual 12" Enclosure | Wavtech thinPRO12
$ 299.99
Only 2 Left
Proline X Single 12" Sealed Micro Series System | Loaded with Wavtech thinPRO12
$ 899.99
$ 999.99
10% OFF
Last One
Proline X Single 10" Sealed Micro Series System | Loaded with Alpine RSW10
$ 899.99
Only 2 Left
Proline X Micro Series 10" Sealed Enclosure - Fits JL Audio 10TW3
$ 249.99
Only 2 Left
Proline X Micro Series 10" Sealed Enclosure - Fits Alpine RSW10
$ 249.99
In stock and ready to ship!
Hot
Proline X Single 10" Sealed Micro Series System | Loaded with Wavtech thinPRO10
$ 849.99
$ 949.99
10% OFF
In stock and ready to ship!
Proline X Micro Series 10" Sealed Enclosure - Fits Wavtech thinPRO10
$ 219.99
In stock and ready to ship!
Proline X Micro Series Dual 10" Sealed Enclosure - Fits Wavtech thinPRO10
$ 299.99
In stock and ready to ship!
Proline X Micro Series 15" Sealed Enclosure | Built for ResoNix GUS-15
$ 349.99
In stock and ready to ship!
Proline X Micro Series 12" Sealed Enclosure | Built for ResoNix GUS-12
$ 299.99
In stock and ready to ship!
Proline X Micro Series Dual 15" Sealed Enclosure | Built for ResoNix GUS-15
$ 699.99
In stock and ready to ship!
Proline X Micro Series Dual 10" Sealed Enclosure | Built for ResoNix GUS-10
$ 329.99
In stock and ready to ship!
Proline X Micro Series 10" Sealed Enclosure | Built for ResoNix GUS-10
$ 249.99
In stock and ready to ship!
Proline X Micro Series Dual 12" Sealed Enclosure | Built for ResoNix GUS-12
$ 349.99
In stock and ready to ship!
Performance Optimized Down Fire Sealed Dual 10" Enclosure | Prodigy NB3-10
$ 279.99
In stock and ready to ship!
Performance Optimized Down Fire Sealed 10" Enclosure | Arc Audio ARC 10
$ 249.99
In stock and ready to ship!
Performance Optimized Down Fire Sealed 12" Enclosure | Arc Audio ARC 12
$ 289.99
In stock and ready to ship!
Proline X Micro Series 12" Sealed Enclosure - Fits JL Audio 12TW3
$ 269.99
In stock and ready to ship!
Performance Optimized Down Fire Sealed 10" Enclosure | Kicker Solo-Baric L7T
$ 229.99
In stock and ready to ship!
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Built Different. Built Better.
Every Proline X enclosure is manufactured in our Tullahoma, Tennessee facility using materials and construction methods that most enclosure brands don't touch.
Langboard Elite MDF
48.5 lb/ft³ density and 200 psi internal bond strength, the highest-grade MDF available for enclosure construction.
1 to 2 Year Warranty
Term runs by series from date of purchase: 1 year on Performance, Performance Optimized, Economy and Down Fire; 2 years on Professional, Vehicle Specific, Flex, Micro and X Series. Covers structural failure and manufacturing defects.
Driver-Matched Tuning
Internal volume, port tuning, and cabinet dimensions are spec'd to each driver diameter, not a universal fit applied across sizes.
Made in Tullahoma, TN
CNC-manufactured in our Tennessee facility on ShopSabre routers. Not imported. Not outsourced.
Drivers Built to Match
10 Inch Subwoofers Spec'd for These Enclosures
The drivers below are matched to the enclosures above by Thiele-Small parameters. Buying together guarantees the alignment, port tuning, and damping work the way the engineering intended.
Prodigy Audio
Prodigy Audio 10 inch Subwoofer | NB2 Series
$ 138.99 $ 145.99
Image Dynamics
Image Dynamics ID10 V4 10-inch Subwoofer
$ 139.99
Prodigy Audio
Prodigy Audio 10 inch Subwoofer | NB3 Series
$ 148.99 $ 165.99
Sony
Sony XS-W104ES Mobile ES Series 10" 4-ohm component subwoofer
$ 198.00 $ 299.99
Drivers Built to Match
12 Inch Subwoofers Spec'd for These Enclosures
The drivers below are matched to the enclosures above by Thiele-Small parameters. Buying together guarantees the alignment, port tuning, and damping work the way the engineering intended.
Drivers Built to Match
15 Inch Subwoofers Spec'd for These Enclosures
The drivers below are matched to the enclosures above by Thiele-Small parameters. Buying together guarantees the alignment, port tuning, and damping work the way the engineering intended.
Amplifiers for the System
Power for Your Subwoofer System
Monoblock amplifiers matched to the power requirements of the drivers these enclosures are built for. Buy the enclosure, match the driver, pick the right amplifier.
US Acoustics
US Acoustics Lisa | 4 Channel Class AB Amplifier | 4 x 50w
$ 159.99
US Acoustics
US Acoustics Wendy | 2 Channel Class AB Amplifier | 2 x 75w
$ 159.99
Rainbow
Rainbow Audio Dream 0.5K Mono Class D Amplifier
$ 197.50 $ 399.99
Rainbow
Rainbow Audio SL-M2 2 channel micro amplifier
$ 199.99 $ 549.99
Down-Firing vs Front-Firing: Which Subwoofer Orientation Belongs in Your Vehicle
A down-firing box points the cone at the floor. That is the whole idea, and it is also where most of the argument starts. One camp says the...
Which Subwoofers Work in a Down-Fire Box: Every Driver We Cut For
Two 10 inch subwoofers can want completely different boxes. The Wavtech thinPRO10 is happy in 0.40 cubic feet. The JL Audio 10W3V3 wants 1.09. Same nominal size, and...
Down-Fire Box Sizing: Single or Dual, 10 or 12 Inch
Most people start this decision at the wrong end. They pick a driver size, then go looking for a box. The constraint that actually decides it is the...
Down-Fire Box Clearance: How Much Floor Gap You Need, and Why Yours Buzzes
The gap under a down-firing box is not spare room. It is the air path. Every bit of output the driver makes has to travel through it, and...