Alpine 8" Car Subwoofers at Sonic Electronix
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Alpine 8" Car Subwoofers

Alpine 8" car subwoofers will provide your vehicle with the bass and lows that you desire.
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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 powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
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 Peak power handling specification is typically rated per speaker unless otherwise noted.
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Refers to the diameter of the subwoofer, measured in inches.
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
 
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
This is the color of the speaker's or subwoofer's cone.
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
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Alpine S-W8D2

900W Max (300W RMS) 8" S-Series Dual 2 Ohm Car Subwoofer

S-W8D2 main
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Alpine S-W8D2

900W Max (300W RMS) 8" S-Series Dual 2 Ohm Car Subwoofer

• 900 Watts Max
• 300 Watts RMS
• Kevlar Reinforced Pulp Cone
• HAMR Santoprene Rubber Surround
• High Strength Steel Frame Basket
• High Strength Steel Frame Basket
• High Grade Strontium Ferrite Magnet

Alpine S-W8D2

900W Max (300W RMS) 8" S-Series Dual 2 Ohm Car Subwoofer

In stock

$140.00 (14.32% off)
$119.95
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  • Alpine BOGO 10% OFF
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S-W8D2 small

900W Max (300W RMS) 8" S-Series Dual 2 Ohm Car Subwoofer

$119.95

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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
Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

Add
20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

$59.99

Add
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View all available accessories for the Alpine S-W8D2.
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(2) Alpine S-W8D4 Subwoofers

(2) 900W Max (300W RMS) 8" Type S Series Dual 4 Ohm Car Subwoofers

S-W8D4,S-W8D4 main
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(2) Alpine S-W8D4 Subwoofers

(2) 900W Max (300W RMS) 8" Type S Series Dual 4 Ohm Car Subwoofers

• 900 Watts Max
• 300 Watts RMS
• Pulp/ Kevlar Cone
• High-Amplitude Multi-Roll Surround
• Concealed Mount Gasket
• 35mm Underhung Voice Coils
• Progressive Spider with Reinforced Layer Tinsel Leads

(2) Alpine S-W8D4 Subwoofers

(2) 900W Max (300W RMS) 8" Type S Series Dual 4 Ohm Car Subwoofers

In stock

$280.00 (18.61% off)
$227.90
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S-W8D4,S-W8D4 small

(2) 900W Max (300W RMS) 8" Type S Series Dual 4 Ohm Car Subwoofers

$227.90

Keep Shopping
FREE NVX XMountPro Cell Phone Mount with Select Orders

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

$14.99

Add
Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

Add
20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

$59.99

Add
Don't see the accessory you're looking for?
View all available accessories for the (2) Alpine S-W8D4 Subwoofers.
View all Accessories
(2) Alpine S-W8D2 Subwoofers

(2) 900W Max (300W RMS) 8" S-Series Dual 2 Ohm Car Subwoofers

S-W8D2,S-W8D2 main
Go to item page
(2) Alpine S-W8D2 Subwoofers

(2) 900W Max (300W RMS) 8" S-Series Dual 2 Ohm Car Subwoofers

• 900 Watts Max
• 300 Watts RMS
• Kevlar Reinforced Pulp Cone
• HAMR Santoprene Rubber Surround
• High Strength Steel Frame Basket
• High Strength Steel Frame Basket
• High Grade Strontium Ferrite Magnet

(2) Alpine S-W8D2 Subwoofers

(2) 900W Max (300W RMS) 8" S-Series Dual 2 Ohm Car Subwoofers

In stock

$280.00 (18.75% off)
$227.49
Hide info
More info Item page
Add to Cart
Gallery

Item Added to Cart

S-W8D2,S-W8D2 small

(2) 900W Max (300W RMS) 8" S-Series Dual 2 Ohm Car Subwoofers

$227.49

Keep Shopping
FREE NVX XMountPro Cell Phone Mount with Select Orders

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

$14.99

Add
Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

Add
20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

$59.99

Add
Don't see the accessory you're looking for?
View all available accessories for the (2) Alpine S-W8D2 Subwoofers.
View all Accessories
Alpine Type-R SWR-8D4

1000W Peak 8" Type-R Series Dual 4 ohm High Performance Subwoofer

SWR-8D4 main
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Alpine Type-R SWR-8D4

1000W Peak 8" Type-R Series Dual 4 ohm High Performance Subwoofer

• 1000W Peak
• 150-350W RMS
• Dual 4-Ohm Voice Coil
• Kevlar Treated Pulp Cone
• Durable HAMR Santoprene Surround

7
Alpine Type-R SWR-8D4

1000W Peak 8" Type-R Series Dual 4 ohm High Performance Subwoofer

OUT OF STOCK

$180.00 (11.14% off)
$159.95
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Item Added to Cart

SWR-8D4 small

1000W Peak 8" Type-R Series Dual 4 ohm High Performance Subwoofer

$159.95

Keep Shopping
FREE NVX XMountPro Cell Phone Mount with Select Orders

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

$14.99

Add
Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

Add
20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

$59.99

Add
Don't see the accessory you're looking for?
View all available accessories for the Alpine Type-R SWR-8D4.
View all Accessories
Alpine Type-R SWR-8D2

1000W Peak 8" Type-R Series Dual 2 ohm High Performance Subwoofer

SWR-8D2 main
Go to item page
Alpine Type-R SWR-8D2

1000W Peak 8" Type-R Series Dual 2 ohm High Performance Subwoofer

• 1000W Peak
• 150-350W RMS
• Dual 2-Ohm Voice Coil
• Kevlar Treated Pulp Cone
• Durable HAMR Santoprene Surround

7
Alpine Type-R SWR-8D2

1000W Peak 8" Type-R Series Dual 2 ohm High Performance Subwoofer

OUT OF STOCK

$180.00 (11.14% off)
$159.95
Hide info
More info Item page
Add to Cart
Gallery

Item Added to Cart

SWR-8D2 small

1000W Peak 8" Type-R Series Dual 2 ohm High Performance Subwoofer

$159.95

Keep Shopping
FREE NVX XMountPro Cell Phone Mount with Select Orders

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

$14.99

Add
Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

Add
20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

$59.99

Add
Don't see the accessory you're looking for?
View all available accessories for the Alpine Type-R SWR-8D2.
View all Accessories
Alpine Type-R SWR-8D2 Open Box (Complete)

1000W Peak 8" Type-R Series Dual 2 ohm High Performance Subwoofer

SWR-8D2 main
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Alpine Type-R SWR-8D2 Open Box (Complete)

1000W Peak 8" Type-R Series Dual 2 ohm High Performance Subwoofer

• 1000W Peak
• 150-350W RMS
• Dual 2-Ohm Voice Coil
• Kevlar Treated Pulp Cone
• Durable HAMR Santoprene Surround

7
Alpine Type-R SWR-8D2 Open Box (Complete)

1000W Peak 8" Type-R Series Dual 2 ohm High Performance Subwoofer

OUT OF STOCK

$180.00 (36.14% off)
$114.95
Hide info
More info Item page
Add to Cart

Item Added to Cart

SWR-8D2 small

1000W Peak 8" Type-R Series Dual 2 ohm High Performance Subwoofer

$114.95

Keep Shopping
FREE NVX XMountPro Cell Phone Mount with Select Orders

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

$14.99

Add
Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

Add
20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

$59.99

Add
Don't see the accessory you're looking for?
View all available accessories for the Alpine Type-R SWR-8D2 Open Box (Complete).
View all Accessories
2 Pack Alpine Type-R SWR-8D4 (Includes 2 Woofers)

(2) 1000W Peak 8" Type-R Series Dual 4 ohm High Performance Subwoofer

SWR-8D4,SWR-8D4 main
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2 Pack Alpine Type-R SWR-8D4 (Includes 2 Woofers)

(2) 1000W Peak 8" Type-R Series Dual 4 ohm High Performance Subwoofer

• 1000W Peak
• 150-350W RMS
• Dual 4-Ohm Voice Coil
• Kevlar Treated Pulp Cone
• Durable HAMR Santoprene Surround

14
2 Pack Alpine Type-R SWR-8D4 (Includes 2 Woofers)

(2) 1000W Peak 8" Type-R Series Dual 4 ohm High Performance Subwoofer

OUT OF STOCK

$360.00 (15.70% off)
$303.48
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Item Added to Cart

SWR-8D4,SWR-8D4 small

(2) 1000W Peak 8" Type-R Series Dual 4 ohm High Performance Subwoofer

$303.48

Keep Shopping
FREE NVX XMountPro Cell Phone Mount with Select Orders

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

$14.99

Add
Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

Add
20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

$59.99

Add
Don't see the accessory you're looking for?
View all available accessories for the 2 Pack Alpine Type-R SWR-8D4 (Includes 2 Woofers).
View all Accessories
2 Pack Alpine Type-R SWR-8D2 (Includes 2 Woofers)

(2) 1000W Peak 8" Type-R Series Dual 2 ohm High Performance Subwoofer

SWR-8D2,SWR-8D2 main
Go to item page
2 Pack Alpine Type-R SWR-8D2 (Includes 2 Woofers)

(2) 1000W Peak 8" Type-R Series Dual 2 ohm High Performance Subwoofer

• 1000W Peak
• 150-350W RMS
• Dual 2-Ohm Voice Coil
• Kevlar Treated Pulp Cone
• Durable HAMR Santoprene Surround

56
2 Pack Alpine Type-R SWR-8D2 (Includes 2 Woofers)

(2) 1000W Peak 8" Type-R Series Dual 2 ohm High Performance Subwoofer

OUT OF STOCK

$360.00 (15.70% off)
$303.48
Hide info
More info Item page
Add to Cart
Gallery

Item Added to Cart

SWR-8D2,SWR-8D2 small

(2) 1000W Peak 8" Type-R Series Dual 2 ohm High Performance Subwoofer

$303.48

Keep Shopping
FREE NVX XMountPro Cell Phone Mount with Select Orders

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

$14.99

Add
Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

Add
20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

$59.99

Add
Don't see the accessory you're looking for?
View all available accessories for the 2 Pack Alpine Type-R SWR-8D2 (Includes 2 Woofers).
View all Accessories
Alpine SWR-8D4 Open Box Complete

1000W Peak 8" Type-R Series Dual 4 ohm High Performance Subwoofer

SWR-8D4 main
Go to item page
Alpine SWR-8D4 Open Box Complete

1000W Peak 8" Type-R Series Dual 4 ohm High Performance Subwoofer

• Item Condition: Open Box Compete
• 1000W Peak
• 150-350W RMS
• Dual 4-Ohm Voice Coil
• Kevlar Treated Pulp Cone
• Durable HAMR Santoprene Surround

Alpine SWR-8D4 Open Box Complete

1000W Peak 8" Type-R Series Dual 4 ohm High Performance Subwoofer

OUT OF STOCK

$180.00 (61.12% off)
$69.99
Hide info
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Item Added to Cart

SWR-8D4 small

1000W Peak 8" Type-R Series Dual 4 ohm High Performance Subwoofer

$69.99

Keep Shopping
FREE NVX XMountPro Cell Phone Mount with Select Orders

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

$14.99

Add
NVX 25 ft. of True Spec 12 Gauge Speaker Wire

100% OFC wire with EnvyFlex metallic jacket insulates and protects against damage from extreme conditions.

$29.99

Add
20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

$59.99

Add
Don't see the accessory you're looking for?
View all available accessories for the Alpine SWR-8D4 Open Box Complete.
View all Accessories
 

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Get the most sound out of your subwoofer with these installation parts designed to make your subwoofer install easier and sound better. Within this category, you will find box terminals, polyfil, subwoofer boxes, sound damping material, subwoofer grilles, speaker wire, connecters, and many more accessories. For all your installation needs, check out our expansive selection of car subwoofer installation parts.

Alpine 8" Car Subwoofers Information

Alpine carries a range of 8" car subwoofers for the bass you've been looking for. Alpine engineers competition grade subwoofers that will both satisfy and last. Great for subwoofer boxes and other installations, these 8" Alpine subs are an easy choice.
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