Alpine Sealed & Loaded Car Sub Boxes at Sonic Electronix

Alpine Sealed & Loaded Car Sub Boxes

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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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Alpine SBR-S8-4 Type-R Loaded Enclosure

Ported Enclosure With One 8" Type-R Subwoofer

SBR-S8-4 main
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Ported Enclosure With One 8" Type-R Subwoofer

• Peak Power: 1000 Watts ; RMS Power: 350 Watts
• Impedance: 4 Ohms
• Two-Piece Parabolic Kevlar Pulp Cone
• High Amplitude Multi Roll Surround
• 3/8" Medium-Density Fiberboard Construction

5
Alpine SBR-S8-4 Type-R Loaded Enclosure

Ported Enclosure With One 8" Type-R Subwoofer

In stock

Only 1 Left!

$300.00 (16.68% off)
$249.95
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3 Special offers
  • Get A Free $25 Gift Card With Purchase!
  • Alpine BOGO 10% OFF
  • 50% Off a Sound Dampening Kit with Your Subwoofer Purchase!

Item Added to Cart

SBR-S8-4 small

Ported Enclosure With One 8" Type-R Subwoofer

$249.95

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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
Car Stereo and Speaker Installation Tool Kit

Complete Car Stereo Tool Kit, Includes Voltage Test Light, Wire Stripper and More

$19.99

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Don't see the accessory you're looking for?
View all available accessories for the Alpine SBR-S8-4 Type-R Loaded Enclosure.
Alpine S-W10D2 Subwoofer + Free Belva Sealed Enclosure

(600W RMS) 10" Dual 2 Ohm Subwoofer + MDFS10 Sealed Enclosure Made with 3/4" MDF and lined w/ Polyfil

MDFS10,S-W10D2 main
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(600W RMS) 10" Dual 2 Ohm Subwoofer + MDFS10 Sealed Enclosure Made with 3/4" MDF and lined w/ Polyfil

• 1800 Watts Max
• 600 Watts RMS
• Pulp/Kevlar Cone
• High Amplitude Multi-Roll (HAMR) Surround
• High Strength Steel Frame Basket
• Progressive Spider with Reinforced Layer Tinsel Leads
• 65 mm Voice Coil with High-Temp 5-Layer DVC Winding on AL Former

117
Alpine S-W10D2 Subwoofer + Free Belva Sealed Enclosure

(600W RMS) 10" Dual 2 Ohm Subwoofer + MDFS10 Sealed Enclosure Made with 3/4" MDF and lined w/ Polyfil

In stock

Only 2 Left!

$249.99 (42.02% off)
$144.94

Item Added to Cart

MDFS10,S-W10D2 small

(600W RMS) 10" Dual 2 Ohm Subwoofer + MDFS10 Sealed Enclosure Made with 3/4" MDF and lined w/ Polyfil

$144.94

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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

Add
Universal 10" Subwoofer Grille

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

$35.99

Add
Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Alpine S-W10D2 Subwoofer + Free Belva Sealed Enclosure.
(2) Alpine R-W12D2 Subwoofer with Free Dual 12" Sub Enclosure

750W RMS 12" R-Series Dual 2-Ohm Car Subwoofer

R-W12D2,MDFD12,R-W12D2 main
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750W RMS 12" R-Series Dual 2-Ohm Car Subwoofer

• 2250W Max
• 750W RMS
• Parabolic pulp/kevlar cone
• H.A.M.R. surround
• Cast aluminum frame with integral shorting sleeve
• Polypropylene, mica and talc dust cap
• 127 oz. Strontium ferrite segmented magnet

155
(2) Alpine R-W12D2 Subwoofer with Free Dual 12" Sub Enclosure

750W RMS 12" R-Series Dual 2-Ohm Car Subwoofer

In stock

 
$679.99

Item Added to Cart

R-W12D2,MDFD12,R-W12D2 small

750W RMS 12" R-Series Dual 2-Ohm Car Subwoofer

$679.99

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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

Add
Universal 12" Subwoofer Grille

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

$27.99

Add
Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

Add

Don't see the accessory you're looking for?
View all available accessories for the (2) Alpine R-W12D2 Subwoofer with Free Dual 12" Sub Enclosure.
Alpine SBRS84 (Open Box, Complete)

Ported Enclosure With One 8" Type-R Subwoofer

SBR-S8-4 main
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Ported Enclosure With One 8" Type-R Subwoofer

• Peak Power: 1000 Watts ; RMS Power: 350 Watts
• Impedance: 4 Ohms
• Two-Piece Parabolic Kevlar Pulp Cone
• High Amplitude Multi Roll Surround
• 3/8" Medium-Density Fiberboard Construction

10
Alpine SBRS84 (Open Box, Complete)

Ported Enclosure With One 8" Type-R Subwoofer

In stock

Only 1 Left!

$300.00 (42.68% off)
$171.95

Item Added to Cart

SBR-S8-4 small

Ported Enclosure With One 8" Type-R Subwoofer

$171.95

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
Car Stereo and Speaker Installation Tool Kit

Complete Car Stereo Tool Kit, Includes Voltage Test Light, Wire Stripper and More

$19.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Alpine SBRS84 (Open Box, Complete).
Alpine Type-S SWS-12D4 12" 1500 Watt Car Stereo Subwoofer + Vented Sub Enclosure

1500W Peak 12" Type-S Series Dual 4-Ohm High Performance Subwoofer Package

BBSW167,1SV12G,S-W12D4 main
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1500W Peak 12" Type-S Series Dual 4-Ohm High Performance Subwoofer Package

• 1500W Peak
• 500W RMS
• Dual 4-Ohm Voice Coil
• Kevlar Treated Pulp Cone
• Durable HAMR Santoprene Surround

100
Alpine Type-S SWS-12D4 12" 1500 Watt Car Stereo Subwoofer + Vented Sub Enclosure

1500W Peak 12" Type-S Series Dual 4-Ohm High Performance Subwoofer Package

OUT OF STOCK

$294.98 (35.59% off)
$190.00

Item Added to Cart

BBSW167,1SV12G,S-W12D4 small

1500W Peak 12" Type-S Series Dual 4-Ohm High Performance Subwoofer Package

$190.00

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
Car Stereo and Speaker Installation Tool Kit

Complete Car Stereo Tool Kit, Includes Voltage Test Light, Wire Stripper and More

$19.99

Add

Don't see the accessory you're looking for?
View all available accessories for the Alpine Type-S SWS-12D4 12" 1500 Watt Car Stereo Subwoofer + Vented Sub Enclosure.
(2) Alpine W10S4 10" 1500 Watt Car Audio Subwoofers + Sealed Subwoofer Enclosure

750W Max (250W RMS) 10" BassLine Series Single 4 ohm Car Subwoofer Package

BBSW167,MDFD10,W10S4,W10S4 main
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750W Max (250W RMS) 10" BassLine Series Single 4 ohm Car Subwoofer Package

• 750W Max
• 250W RMS
• Polypropylene-Mica cone
• High-excursion poly-foam surround
• High-strength custom steel frame
• Progressive Wavelit Ribs (P.W.R.) cone design

67
(2) Alpine W10S4 10" 1500 Watt Car Audio Subwoofers + Sealed Subwoofer Enclosure

750W Max (250W RMS) 10" BassLine Series Single 4 ohm Car Subwoofer Package

OUT OF STOCK

 
$341.98

Item Added to Cart

BBSW167,MDFD10,W10S4,W10S4 small

750W Max (250W RMS) 10" BassLine Series Single 4 ohm Car Subwoofer Package

$341.98

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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

Add
Universal 10" Subwoofer Grille

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

$35.99

Add
Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

Add

Don't see the accessory you're looking for?
View all available accessories for the (2) Alpine W10S4 10" 1500 Watt Car Audio Subwoofers + Sealed Subwoofer Enclosure.
(2) Alpine S-W10D2 Subs + NVX VAD8402 Amp + Dual 10" Sealed Enclosure + Amp Kit

(2) 600W RMS Alpine 10" Dual 2 Ohm Subwoofer + NVX VAD8402 2-channel Amp + Belva Dual 10" Sealed Enclosure + Bak42bk (black)

S-W10D2,BAK42BK,MDFD10,VAD8402,S-W10D2 main
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(2) 600W RMS Alpine 10" Dual 2 Ohm Subwoofer + NVX VAD8402 2-channel Amp + Belva Dual 10" Sealed Enclosure + Bak42bk (black)

• 1800 Watts Max
• 600 Watts RMS
• Pulp/Kevlar Cone
• High Amplitude Multi-Roll (HAMR) Surround
• High Strength Steel Frame Basket
• Progressive Spider with Reinforced Layer Tinsel Leads
• 65 mm Voice Coil with High-Temp 5-Layer DVC Winding on AL Former

80
(2) Alpine S-W10D2 Subs + NVX VAD8402 Amp + Dual 10" Sealed Enclosure + Amp Kit

(2) 600W RMS Alpine 10" Dual 2 Ohm Subwoofer + NVX VAD8402 2-channel Amp + Belva Dual 10" Sealed Enclosure + Bak42bk (black)

OUT OF STOCK

$719.97 (27.15% off)
$524.52

Item Added to Cart

S-W10D2,BAK42BK,MDFD10,VAD8402,S-W10D2 small

(2) 600W RMS Alpine 10" Dual 2 Ohm Subwoofer + NVX VAD8402 2-channel Amp + Belva Dual 10" Sealed Enclosure + Bak42bk (black)

$524.52

Keep Shopping

FREE NVX XMountPro Cell Phone Mount with Select Orders

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

$14.99

Add
Universal 10" Subwoofer Grille

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

$35.99

Add
Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

Add

Don't see the accessory you're looking for?
View all available accessories for the (2) Alpine S-W10D2 Subs + NVX VAD8402 Amp + Dual 10" Sealed Enclosure + Amp Kit.
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