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Alpine Type-R SWR-8D2

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

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

Learn more about the swr8d2

We apologize

This item has been discontinued

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Product Highlights


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

Description


Alpine brand icon

Authorized dealer

Product Details:

  • 8" Dual 2-Ohm Type-R Series Car Subwoofer
  • Power Handling:
    • Peak: 1000 watts
    • RMS: 150-350 watts
  • Impedance: Dual 2 ohm
  • Reinforced Parabolic Cone Structure with Poly-Mica Dust Cap & Pulp-Kevlar Cone
  • Durable HAMR Santoprene surround
  • Nomex Progressive Conex spider
  • Compound Radius Curve pole geometry
  • Oversized 1.6", High-Temperature, 4-Layer Dual Voice Coil
  • 52 oz. magnet motor structure
  • Frequency response: 30-200 Hz
  • Resonance Frequency (Fs): 40Hz
  • Excursion: 12mm
  • Top-mount depth: 4-1/2"
  • Sensitivity: 83.5dB
  • Subwoofer Grilles Sold Separately - Alpine KTE-8G
  • Authorized Internet Dealer
  • 1-year Sonic Electronix Warranty

Product history:

Alpine SWR-8D2 thumbnail
(newest, current model)
Alpine SWR-823D thumbnail
(previous model, replaced by Alpine Type-R SWR-8D2)

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Alpine Type-R SWR-8D2 Subwoofer

Mono Amp

Mono Amp - Option 1

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Alpine Type-R SWR-8D2 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Alpine Type-R SWR-8D2 Subwoofers

Mono Amp

Mono Amp - Option 1

4 Channel Amp

Wiring Guide to Wire 4 Alpine Type-R SWR-8D2 Subwoofers

2 Channel Amp

4 Channel Amp


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Specifications & Details


Subwoofer Specifications
Series
Type-R Series
Subwoofer Size
8"
Peak Power Handling
1000 watts
RMS Power Handling
350 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
2 ohm
Voice Coil Diameter
1-5/8"
Sensitivity
83.5 dB
Xmax (millimeters)
12 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Kevlar Reinforced Pulp Paper
Woofer Surround
Santoprene Rubber
Subwoofer Grille
No
Re-Cone Kit Available
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Minimum Sealed Box Volume
0.25 cubic feet
Optimum Sealed Box Volume
0.30 cubic feet
Maximum Sealed Box Volume
0.50 cubic feet
Minimum Ported Box Volume
0.5 cubic feet
Optimum Ported Box Volume
0.70 cubic feet
Maximum Ported Box Volume
0.70 cubic feet
Top-Mount Depth (Mounting Depth)
4-1/2"
Cutout Diameter
6-15/16"
Shallow Mount Installation
No
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
40 Hz
Equivalent Compliance (Vas)
10.5 liters
Total Speaker Q Value (Qts)
0.50
Electrical Q Value (Qes)
0.54
Electrical Resistance of Voice Coil (Re)
1.85 + 1.85 ohm
Mechanical Q Value (Qms)
7.2
What is in the box?
Paperwork
User manual
WITB: Subwoofers
Subwoofer
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Item Details


Manufacturer:

Model Number:

SWR-8D2

Weight:

9.50lbs

Internal SKU:

swr8d2

Internal Product ID:

72375

Product and How-to Videos


Customer Ratings & Reviews


Alpine Type-R SWR-8D2 thumbnail image

5 star
88%
4 star
13%
3 star
0%
2 star
0%
1 star
0%



Durability
4.5
Value
4.7
Features
4.6
Design
4.8
Usability
4.6

Customer Reviews

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Excellent 8" sub

I have one of these in my Tacoma. It's defiantly not earth-shattering melt your brain bass, but it is punchy and has great definition in the bass notes. I have no problem with the amount of output that one of these getting 300 watts RMS.

I like the 2 ohm version because you can wire the voice coils in a series and get a 4 ohm load, most 2 channel amps bridge into a 4 ohm load well.

I have it in a sealed box at about .27 cubic feet internal volume, and it sounds great. More than enough output. Perform well in cold weather as well as warm. I've had it for about 6 months now.

The sub is very well made. It has a heavy duty cast basket, nice terminals, and looks great. It was a shame to cover it up with a grill.

I am very happy with this sub and have no desire to try a JL one.

By timothom on February 19, 2015

22 found this helpful


Good value

Good speaker all you can expect from an eight inch. No matter how much power you put to it, it's not a 12 inch sub.

By Harry T Baggs on August 22, 2014

24 found this helpful


WOW !! CAN'T BELIEVE THESE ARE 8"

The following review is for a previous version (SWR-823D).

We bought 2 of these for a small truck. These are the nicest looking 8" subs. Both subs sealed and being pushed by an Alpine MRP-500 They sound like 2 10" subs! These wont rattle the car next to you but, people will wonder where you are hiding the big subs. Well worth it if you have limited space.

By cesar on February 22, 2012

18 found this helpful


great little sub.

This sub sounds very good. Plays low tight and accurate. Great bang for the buck.

By greger on April 5, 2015

20 found this helpful


Alpine SWR-8D2 Sub Woofer

These Subs are Dual Voice coil 2 ohm subwoofers "Type R"
These out perform most 12s... You definitely want two of them...
They are a very nice quality, Very clean Bass Not clattery like a lot of 12s and they hit hard... make sure you have the right box and they are properly powered and you will love them...

Alpine - "Feel Your Music"

By MoonShine on January 5, 2015

25 found this helpful


solid value

The following review is for a previous version (SWR-823D).

took a while to break in but once they did sound is just what i want

By mitch on February 12, 2013

14 found this helpful


Cool

This sub is not loud. It is an excellent choice for a sound quality build. This sub is the best sounding subwoofer that I have ever heard. Excellent quality. Simply beautiful.

By Charles on July 21, 2017

2 found this helpful


Very "good" product

Please read. As I attempted to post a review to the dual 4 ohm version, and Sonic Electronic apparently will not allow a review to go though unless it is 5 starts. All I will say about this sub is that you are warned. Quality is not the Alpine Type-R specialty any longer. Do not attempt to post a bad review when you have an issue either because they will filter it out.

By Joseph on April 5, 2016

4 found this helpful


You won't be disappointed

I would definitely recommend these to anyone looking for bass in small space. I've built a lot of systems from just 200watts to even things out to 5000watt monsters so I'm pretty jaded, it takes something special to impress me and I must say in a 0.8cf (0.4 per driver) enclosure with a port tuned to 38hertz with just 500watts these little 8" subs made my jaw drop, don't get me wrong your not going to bass box with a well built 12" set up, they're not going to reach down as low as 15's but set um up right and you won't be disappointed. Worth double what Sonic sell them for easy.

By Keith on March 2, 2016 Checkmark Icon Verified purchase

2 found this helpful




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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.