MTX Sealed & Loaded Car Sub Boxes at Sonic Electronix

MTX Sealed & Loaded Car Sub Boxes

Sealed and loaded car sub boxes provide exceptional sound for your MTX speakers.
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This value represents the number of speakers or subwoofers that the enclosure accommodates.
Represents the style of the enclosure. Be sure to purchase the appropriate enclosure type and internal volume that will be compatible with your subwoofer's recommendation.

Sealed - Sealed boxes are those that have no holes or vents in it. The only hole in a sealed box is where the subwoofer is installed. Smaller sealed boxes require more power than a larger sealed box. They provide a tight, accurate bass, while the larger sealed enclosures provide a "boomier" and louder bass.

Ported / Vented - Ported/Vented Enclosures provide an even boomier, louder bass, but less accurate then a small, sealed box. Ported enclosures typically require more airspace per sub and also less power output from an amplifier to perform correctly.

Bandpass - Bandpass enclosures make subwoofers perform efficiently, but loose. The bass is not as "boomy" as a ported enclosure nor as punchy as a sealed enclosure. Bandpass enclosures work well with lower to mid-level subwoofers.
Refers to the diameter of the subwoofer, measured in inches.
This is the total RMS power handling of all the subwoofers included in the package or enclosure.

If the loaded enclosure or amplifier and subwoofer package includes more than a single subwoofer, then this is the total RMS power handling for all of the subs combined.

The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend giving your subwoofer(s) 75% - 90% of the recommended RMS rating.
This is the Total Peak Power handling of all the subwoofers included in the package or enclosure.

If the loaded enclosure or amplifier and subwoofer package includes more than a single subwoofer, then this is the total peak power handling for all of the subs combined.

Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements.
The box style or shape refers to the actual shape of the box. Square and rectangular boxes are straight-edged boxes on all sides, whereas hatchback and truck style enclosures feature an angled front or back design that allows for installation in places short on depth such as single cab pickup trucks. You can also use such enclosures in hatchback cars or other vehicles where space is a premium. Tube and cylinder shaped boxes were made popular by Bazooka and are a great option for those looking for a nice amount of bass without sacrificing lots of space. They may even fit in locations that slim truck boxes cannot fit in. If the enclosure is vehicle specific, we encourage you to read the product description to find out which vehicles the enclosure is made for.
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!
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MTX Audio TNP212D2 Terminator Dual Subwoofer Package + Amplifier

1200 Watt Max Dual 12" Terminator Series Loaded Subwoofer Bass System with Amplifier and Bass Knob Included

TNP212D2 main
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1200 Watt Max Dual 12" Terminator Series Loaded Subwoofer Bass System with Amplifier and Bass Knob Included

• 1200W Peak (2 Subs)
• 400W RMS (2 Subs)
• 48oz. Magnet
• Terminator Series Class D Monoblock Car Amplifier
• Heavy 5/8" MDF Construction
• Black Carpeting

148
MTX Audio TNP212D2 Terminator Dual Subwoofer Package + Amplifier

1200 Watt Max Dual 12" Terminator Series Loaded Subwoofer Bass System with Amplifier and Bass Knob Included

OUT OF STOCK

$299.95 (16.67% off)
$249.95

Item Added to Cart

TNP212D2 small

1200 Watt Max Dual 12" Terminator Series Loaded Subwoofer Bass System with Amplifier and Bass Knob Included

$249.95

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NVX XKIT82

100% Copper, 2-Channel True Spec 8 Gauge Amplifier Installation Kit

$69.99

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NVX SDTK20

Trunk Kit - 20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

$59.99

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View all available accessories for the MTX Audio TNP212D2 Terminator Dual Subwoofer Package + Amplifier.
MTX Terminator TN12-02 12” 400 Watt Car Audio Subwoofer+Sealed Sub Box Enclosure

400W Peak (200W RMS) 12" Terminator Series Single 2 ohm Subwoofer Package

BBSW167,MDFS12,TN12-02 main
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400W Peak (200W RMS) 12" Terminator Series Single 2 ohm Subwoofer Package

• 400W Peak
• 200W RMS
• Single 2 ohm
• Polypropylene Cone
• Rubber Surround
• 28 oz. Magnet Structure

19
MTX Terminator TN12-02 12” 400 Watt Car Audio Subwoofer+Sealed Sub Box Enclosure

400W Peak (200W RMS) 12" Terminator Series Single 2 ohm Subwoofer Package

In stock

$154.89 (16.72% off)
$128.99

Item Added to Cart

BBSW167,MDFS12,TN12-02 small

400W Peak (200W RMS) 12" Terminator Series Single 2 ohm Subwoofer Package

$128.99

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NVX Speaker Wire (XWS1225)

25 ft. of True 12 Gauge EnvyFlex Speaker Cable/Wire (100% Oxygen-Free Copper)

$29.99

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NVX Sound Dampening Trunk Kit (SDTK20)

20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

$59.99

Add

Don't see the accessory you're looking for?
View all available accessories for the MTX Terminator TN12-02 12” 400 Watt Car Audio Subwoofer+Sealed Sub Box Enclosure.
MTX 3510-04S 10" 600 Watt Shallow Car Subwoofer+Sealed Sub Box Slim Enclosure

600W Max (300W RMS) 10" 35 Series 4 ohm Shallow Mount Car Subwoofer Package

BBSW167,10SME,3510-04S main
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600W Max (300W RMS) 10" 35 Series 4 ohm Shallow Mount Car Subwoofer Package

• 600W Max
• 300W RMS
• Slim Profile for Mounting In Tight Spaces
• Inverted Apex Surround
• Horizontal Spring-Loaded Terminals
• Sensitivity: 83.7dB

11
MTX 3510-04S 10" 600 Watt Shallow Car Subwoofer+Sealed Sub Box Slim Enclosure

600W Max (300W RMS) 10" 35 Series 4 ohm Shallow Mount Car Subwoofer Package

Special order

Ships at Later Date

$189.89 (15.22% off)
$160.99

Item Added to Cart

BBSW167,10SME,3510-04S small

600W Max (300W RMS) 10" 35 Series 4 ohm Shallow Mount Car Subwoofer Package

$160.99

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FREE NVX XMountPro Cell Phone Mount with Select Orders

Spend $200 and use code XMOUNTPRO to get this free!.

$14.99

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Universal 10" Subwoofer Grille

Keep your subwoofer safe from accidental damages with this amazing grill.

$35.99

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Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

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View all available accessories for the MTX 3510-04S 10" 600 Watt Shallow Car Subwoofer+Sealed Sub Box Slim Enclosure.
MTX Terminator TN12-04 12” 400 Watt Car Audio Subwoofer+ Free Sealed Enclosure

400W Peak (200W RMS) 12" Terminator Series Single 4 ohm Subwoofer Package

BBSW167,MDFS12,TN12-04 main
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400W Peak (200W RMS) 12" Terminator Series Single 4 ohm Subwoofer Package

• 400W Peak
• 200W RMS
• Single 4 ohm
• Polypropylene Cone
• Rubber Surround
• 28 oz. Magnet Structure

40
MTX Terminator TN12-04 12” 400 Watt Car Audio Subwoofer+ Free Sealed Enclosure

400W Peak (200W RMS) 12" Terminator Series Single 4 ohm Subwoofer Package

In stock

$154.89 (16.72% off)
$128.99

Item Added to Cart

BBSW167,MDFS12,TN12-04 small

400W Peak (200W RMS) 12" Terminator Series Single 4 ohm Subwoofer Package

$128.99

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NVX Speaker Wire (XWS1225)

25 ft. of True 12 Gauge EnvyFlex Speaker Cable/Wire (100% Oxygen-Free Copper)

$29.99

Add
NVX Sound Dampening Trunk Kit (SDTK20)

20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

$59.99

Add

Don't see the accessory you're looking for?
View all available accessories for the MTX Terminator TN12-04 12” 400 Watt Car Audio Subwoofer+ Free Sealed Enclosure.
MTX Audio TNE212D Terminator Dual Subwoofer Package

1200 Watt Dual 12" Terminator Series Loaded Subwoofer Bass Enclosure

TNE212D main
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1200 Watt Dual 12" Terminator Series Loaded Subwoofer Bass Enclosure

• 800W Peak
• 400W RMS
• 48oz. Magnet
• Heavy 5/8" MDF Construction
• Black Carpeting

25
MTX Audio TNE212D Terminator Dual Subwoofer Package

1200 Watt Dual 12" Terminator Series Loaded Subwoofer Bass Enclosure

OUT OF STOCK

$169.95 (11.77% off)
$149.95

Item Added to Cart

TNE212D small

1200 Watt Dual 12" Terminator Series Loaded Subwoofer Bass Enclosure

$149.95

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NVX Speaker Wire (XWS1225)

25 ft. of True 12 Gauge EnvyFlex Speaker Cable/Wire (100% Oxygen-Free Copper)

$29.99

Add
NVX Sound Dampening Trunk Kit (SDTK20)

20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

$59.99

Add

Don't see the accessory you're looking for?
View all available accessories for the MTX Audio TNE212D Terminator Dual Subwoofer Package.
MTX TNP212D2 12" 1200W Dual Car Subwoofer Box + Amplifier and Install Kit

Dual 12" Amplified Terminator Loaded Subwoofer Bass System with Install Kit

BAK82,TNP212D2 main
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Dual 12" Amplified Terminator Loaded Subwoofer Bass System with Install Kit

• 1200W Peak (2 Subs)
• 400W RMS (2 Subs)
• 48oz. Magnet
• Terminator Series Class D Monoblock Car Amplifier
• Heavy 5/8" MDF Construction
• Black Carpeting
• Complete 8 Gauge 2-Channel Amplifier Installation Kit
• Designed Specifically For Car Audio Systems Up to 500 Watts RMS
• Premium Power and Ground Wire Provides Optimal Power Transfer
• Mini-ANL Fuse Holder With A 60 Amp Mini-ANL fuse

828
MTX TNP212D2 12" 1200W Dual Car Subwoofer Box + Amplifier and Install Kit

Dual 12" Amplified Terminator Loaded Subwoofer Bass System with Install Kit

OUT OF STOCK

$339.94 (23.53% off)
$259.95

Item Added to Cart

BAK82,TNP212D2 small

Dual 12" Amplified Terminator Loaded Subwoofer Bass System with Install Kit

$259.95

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NVX XKIT82

100% Copper, 2-Channel True Spec 8 Gauge Amplifier Installation Kit

$69.99

Add
NVX SDTK20

Trunk Kit - 20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

$59.99

Add

Don't see the accessory you're looking for?
View all available accessories for the MTX TNP212D2 12" 1200W Dual Car Subwoofer Box + Amplifier and Install Kit.
MTX TN12-04 12" 400 Watt Car Audio Bass Subwoofer + Vented Ported Box Enclosure

400W Peak (200W RMS) 12" Terminator Series Single 4 ohm Subwoofer Package

1SV12G,TN12-04 main
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400W Peak (200W RMS) 12" Terminator Series Single 4 ohm Subwoofer Package

• 400W Peak
• 200W RMS
• Single 4 ohm
• Polypropylene Cone
• Rubber Surround
• 28 oz. Magnet Structure

121
MTX TN12-04 12" 400 Watt Car Audio Bass Subwoofer + Vented Ported Box Enclosure

400W Peak (200W RMS) 12" Terminator Series Single 4 ohm Subwoofer Package

OUT OF STOCK

$169.94 (34.69% off)
$110.99

Item Added to Cart

1SV12G,TN12-04 small

400W Peak (200W RMS) 12" Terminator Series Single 4 ohm Subwoofer Package

$110.99

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NVX Speaker Wire (XWS1225)

25 ft. of True 12 Gauge EnvyFlex Speaker Cable/Wire (100% Oxygen-Free Copper)

$29.99

Add
NVX Sound Dampening Trunk Kit (SDTK20)

20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

$59.99

Add

Don't see the accessory you're looking for?
View all available accessories for the MTX TN12-04 12" 400 Watt Car Audio Bass Subwoofer + Vented Ported Box Enclosure.
MTX Audio Terminator TNP212D

Amplified and Loaded Dual 12" Enclosed Subwoofer System

TNP212D main
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Amplified and Loaded Dual 12" Enclosed Subwoofer System

• Amplified and Loaded Dual 12" Enclosed Subwoofer System
• 1200W Peak (2 Subs)
• 400W RMS (2 Subs)
• 48oz. Magnet
• Terminator Series Class D Monoblock Car Amplifier
• Built-in Adaptive Cooling Fans
• Smart Engage Auto Turn-On Circuitry

11,840
MTX Audio Terminator TNP212D

Amplified and Loaded Dual 12" Enclosed Subwoofer System

OUT OF STOCK

$299.95 (16.67% off)
$249.95

Item Added to Cart

TNP212D small

Amplified and Loaded Dual 12" Enclosed Subwoofer System

$249.95

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NVX XKIT82

100% Copper, 2-Channel True Spec 8 Gauge Amplifier Installation Kit

$69.99

Add
NVX XBRC

Universal Remote Level Control for Car Amplifier/Amp Bass/Input

$9.99

Add
NVX SDTK20

Trunk Kit - 20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

$59.99

Add

Don't see the accessory you're looking for?
View all available accessories for the MTX Audio Terminator TNP212D.
MTX Audio 10" 300W Subwoofer + Truck Enclosure + Boss 1100W AB Amplifier

300W Peak (150W RMS) 10" Terminator Series Single 4 ohm Subwoofer Package

BAK82,R1100M,1TRUCK10,TN10-04 main
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300W Peak (150W RMS) 10" Terminator Series Single 4 ohm Subwoofer Package

• 300W Peak
• 150W RMS
• Single 4 ohm
• Polypropylene Cone
• Rubber Surround
• 28 oz. Magnet Structure

202
MTX Audio 10" 300W Subwoofer + Truck Enclosure + Boss 1100W AB Amplifier

300W Peak (150W RMS) 10" Terminator Series Single 4 ohm Subwoofer Package

OUT OF STOCK

$313.92 (36.33% off)
$199.86

Item Added to Cart

BAK82,R1100M,1TRUCK10,TN10-04 small

300W Peak (150W RMS) 10" Terminator Series Single 4 ohm Subwoofer Package

$199.86

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NVX SDTK20

Trunk Kit - 20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

$59.99

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Don't see the accessory you're looking for?
View all available accessories for the MTX Audio 10" 300W Subwoofer + Truck Enclosure + Boss 1100W AB Amplifier.
TNP212D2 main
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• Item Condition: Open Box
• 1200W Peak (2 Subs)
• 400W RMS (2 Subs)
• 48oz. Magnet
• Terminator Series Class D Monoblock Car Amplifier
• Heavy 5/8" MDF Construction
• Black Carpeting

OUT OF STOCK

$299.95 (24.99% off)
$224.99

Item Added to Cart

TNP212D2 small

$224.99

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NVX SDTK20

Trunk Kit - 20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

$59.99

Add

Don't see the accessory you're looking for?
View all available accessories for the MTX TNP212D2 New, Damaged Packaging Only.
MTX Audio TNP212D2 Terminator Dual Subwoofer Package + Amp Open Box (Complete)

1200 Watt Max Dual 12" Terminator Series Loaded Subwoofer Bass System with Amplifier and Bass Knob Included

TNP212D2 main
Go to item page

1200 Watt Max Dual 12" Terminator Series Loaded Subwoofer Bass System with Amplifier and Bass Knob Included

• 1200W Peak (2 Subs)
• 400W RMS (2 Subs)
• 48oz. Magnet
• Terminator Series Class D Monoblock Car Amplifier
• Heavy 5/8" MDF Construction
• Black Carpeting

148
MTX Audio TNP212D2 Terminator Dual Subwoofer Package + Amp Open Box (Complete)

1200 Watt Max Dual 12" Terminator Series Loaded Subwoofer Bass System with Amplifier and Bass Knob Included

OUT OF STOCK

$299.95 (20.00% off)
$239.95

Item Added to Cart

TNP212D2 small

1200 Watt Max Dual 12" Terminator Series Loaded Subwoofer Bass System with Amplifier and Bass Knob Included

$239.95

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NVX XKIT82

100% Copper, 2-Channel True Spec 8 Gauge Amplifier Installation Kit

$69.99

Add
NVX SDTK20

Trunk Kit - 20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

$59.99

Add

Don't see the accessory you're looking for?
View all available accessories for the MTX Audio TNP212D2 Terminator Dual Subwoofer Package + Amp Open Box (Complete).
MTX 5515-44 15" 800 Watt DVC 4-ohm Car Audio Subwoofer+Sealed Sub Box Enclosure

800W Peak (400W RMS) 15" 55 Series Dual 4 Ohm Subwoofer Package

(2) 5515-44,BBSW167,15DQ main
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800W Peak (400W RMS) 15" 55 Series Dual 4 Ohm Subwoofer Package

• 800W Peak
• 400W RMS
• Dual 4 ohm Voice Coil
• Polypropylene Cone
• Rubber Surround
• Spider Plateau Venting Mechanically Cools the Voice Coil
• Radial Ribbed T-Yoke Dissipates Heat and Decreases Distortion

10
MTX 5515-44 15" 800 Watt DVC 4-ohm Car Audio Subwoofer+Sealed Sub Box Enclosure

800W Peak (400W RMS) 15" 55 Series Dual 4 Ohm Subwoofer Package

OUT OF STOCK

$571.84 (23.77% off)
$435.90

Item Added to Cart

(2) 5515-44,BBSW167,15DQ small

800W Peak (400W RMS) 15" 55 Series Dual 4 Ohm Subwoofer Package

$435.90

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NVX Speaker Wire (XWS1225)

25 ft. of True 12 Gauge EnvyFlex Speaker Cable/Wire (100% Oxygen-Free Copper)

$29.99

Add
NVX Sound Dampening Trunk Kit (SDTK20)

20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

$59.99

Add

Don't see the accessory you're looking for?
View all available accessories for the MTX 5515-44 15" 800 Watt DVC 4-ohm Car Audio Subwoofer+Sealed Sub Box Enclosure.
MTX 5515-22 15" 800 Watt DVC 2-ohm Car Audio Subwoofer+Sealed Sub Box Enclosure

800W Peak (400W RMS) 400W 15" 55 Series Dual 2 Ohm Subwoofer Package

(2) 5515-22,BBSW167,15DQ main
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800W Peak (400W RMS) 400W 15" 55 Series Dual 2 Ohm Subwoofer Package

• 800W Peak
• 400W RMS
• Dual 2 ohm Voice Coil
• Polypropylene Cone
• Rubber Surround
• Spider Plateau Venting Mechanically Cools the Voice Coil
• Radial Ribbed T-Yoke Dissipates Heat and Decreases Distortion

10
MTX 5515-22 15" 800 Watt DVC 2-ohm Car Audio Subwoofer+Sealed Sub Box Enclosure

800W Peak (400W RMS) 400W 15" 55 Series Dual 2 Ohm Subwoofer Package

OUT OF STOCK

$571.84 (12.58% off)
$499.90

Item Added to Cart

(2) 5515-22,BBSW167,15DQ small

800W Peak (400W RMS) 400W 15" 55 Series Dual 2 Ohm Subwoofer Package

$499.90

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NVX Speaker Wire (XWS1225)

25 ft. of True 12 Gauge EnvyFlex Speaker Cable/Wire (100% Oxygen-Free Copper)

$29.99

Add
NVX Sound Dampening Trunk Kit (SDTK20)

20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

$59.99

Add

Don't see the accessory you're looking for?
View all available accessories for the MTX 5515-22 15" 800 Watt DVC 2-ohm Car Audio Subwoofer+Sealed Sub Box Enclosure.
MTX Audio TNE212D Terminator Dual Subwoofer Package Open Box (Complete)

1200 Watt Dual 12" Terminator Series Loaded Subwoofer Bass Enclosure

TNE212D main
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1200 Watt Dual 12" Terminator Series Loaded Subwoofer Bass Enclosure

• 800W Peak
• 400W RMS
• 48oz. Magnet
• Heavy 5/8" MDF Construction
• Black Carpeting

MTX Audio TNE212D Terminator Dual Subwoofer Package Open Box (Complete)

1200 Watt Dual 12" Terminator Series Loaded Subwoofer Bass Enclosure

OUT OF STOCK

$169.95 (11.77% off)
$149.95

Item Added to Cart

TNE212D small

1200 Watt Dual 12" Terminator Series Loaded Subwoofer Bass Enclosure

$149.95

Keep Shopping

NVX Speaker Wire (XWS1225)

25 ft. of True 12 Gauge EnvyFlex Speaker Cable/Wire (100% Oxygen-Free Copper)

$29.99

Add
NVX Sound Dampening Trunk Kit (SDTK20)

20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

$59.99

Add

Don't see the accessory you're looking for?
View all available accessories for the MTX Audio TNE212D Terminator Dual Subwoofer Package Open Box (Complete).

MTX Sealed & Loaded Car Sub Boxes Information

MTX sealed and loaded car sub boxes are a great choice for many vehicles. With simple installation and true sub-bass performance, these boxes are sure to turn some heads. MTX speakers inside sealed and loaded sub boxes will bring the bass you are looking for.
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