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Alpine Type-R SWR-8D4

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

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

Learn more about the swr8d4

We apologize

This item has been discontinued

Product Highlights


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

Description


Alpine brand icon

Authorized dealer



General Features:

  • 8" Dual 4-Ohm Type-R Series Car Subwoofer
  • Power Handling:
    • Peak: 1000 watts
    • RMS: 150-350 watts
  • Impedance: Dual 4 ohms
  • 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. Double Strontium magnet motor structure
  • Sealed box volume: 0.15-0.50 cu. ft.
  • Ported box volume: 0.25-0.70 cu. ft.
  • 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-8D4 thumbnail
(newest, current model)
Alpine SWR-843D thumbnail
(previous model, replaced by Alpine Type-R SWR-8D4)

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Alpine Type-R SWR-8D4 Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Alpine Type-R SWR-8D4 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Alpine Type-R SWR-8D4 Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 Alpine Type-R SWR-8D4 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

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)
4 ohms
Voice Coil Diameter
1-5/8"
Frequency Response
30 - 200 Hz
Sensitivity
40 dB
Xmax (millimeters)
12 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Kevlar Reinforced Pulp Paper
Woofer Surround
Santoprene Rubber
Magnet Structure
Double Stacked
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
Electromechanical Parameters
Free-Air Resonance (Fs)
42 Hz
Equivalent Compliance (Vas)
10.3 liters
Total Speaker Q Value (Qts)
0.57
Electrical Q Value (Qes)
0.62
Electrical Resistance of Voice Coil (Re)
3.7 + 3.7 ohms
Mechanical Q Value (Qms)
6.8
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-8D4

Weight:

9.50lbs

Internal SKU:

swr8d4

Internal Product ID:

72376

Product and How-to Videos


Customer Ratings & Reviews



5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
4.7
Value
5
Features
4.9
Design
5
Usability
4.9

Customer Reviews

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cant be beat

I was able to replace my factory blown sub in my 2002 Tahoe with this one. It fit right in the factory box behind trim panel. I added a JVC KS-AX3201D cause I didn't want to go crazy. And I couldn't be happier.

By mike on February 25, 2014

19

found this helpful.

Wow

Im running this sub in a .7 cubic foot ported box in a single cab ford ranger. Just in the break in period at half volume, you can tell this thing is nasty! Im pushing it with a sound ordnance M1500, and its power hungry. For sure recommend this. Cant wait to crank it up!

By scottyd on April 19, 2014

15

found this helpful.

GREAT CUSTOMER SERVICE

I love this company....very easy to deal with and never rude. Either I ordered the wrong part or they sent me the wrong thing. I called, took me a little time to get through. But my problem was solved instantly no if''s and's or but's (lol) I would recommend Sonic Electronic to anyone.....Thanks guys.....M Youngblood

By Mandy on March 16, 2015

13

found this helpful.

Powerful little sub

I bought this sub ti fit into the factory sub in-closer of a 2014 Jeep Wrangler Unlimited. It is a lot deeper then the factory speaker so you will need a spacer to make it fit.
I have a Polk Audio 5 channel amp with 400 watts of power going to it at 2 ohms. It could handle a lot more power. Don't be afraid to give it some juice.
I am very happy with this purchase. It is night and day from the factory sub hooked up to the same amp.
It is pretty good for Rock music.
I don't play a lot of Rap so I really cannot comment on that.
I do not thank you will be disappointed as long as you give it enough power.
I would definitely recommend it!

By Anthony on January 10, 2016

4

found this helpful.

Alpine Type-R SWR-8D4

Truly a great value for me I am about to order two more and I've already let people know about these speakers they're great

By Earl on September 7, 2020

2

found this helpful.

Cant go wrong with Alpine

Solid construction and fit perfectly in my tight space for under the back seat of my hummer. The price from Sonic is unbeatable. I only gave it 4 stars for durability because I have only had it a couple of months I can't really say its durable until I have had it for a while and I rarely drive the vehicle so it doesn't get pushed.

By Chad on October 25, 2016

1

found this helpful.

Great subwoofer!

I put this subwoofer in a small sealed fiberglass enclosure. The type r subs have great specs for their small size. The cutout diameter and mounting depth are smaller than most other 8" subs, but they still perform wonderfully. I am particularly impressed with the surround design. It allows for a lot of excursion. These can take a decent amount of power. I also have a kicker comp rt sub that i tried in the same enclosure. I prefer the alpine.

By Matt on June 22, 2016

1

found this helpful.

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