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Alpine Bassline SWA-12S4

750W Peak (250W RMS) 12" Single 4 Ohm BASSLINE Series High Performance Subwoofer

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• 750W Peak
• 250W RMS
• Single 4 ohm Voice Coil
• Polypropylene & Mica Damped Cone
• High-Excursion Poly-Foam Surround
• High Strength Custom Steel Frame
• 2" Aluminum Steel Frame
• 8 Gauge Push Pin Terminals

Learn more about the swa12s4

Good news and a little bad...

This item has been discontinued

But you may be interested in the newest model that's available.

w12s4 thumbnail

Alpine W12S4 12" Bass Subwoofer

OUR PRICE: $79.95

View item

Product Highlights


• 750W Peak
• 250W RMS
• Single 4 ohm Voice Coil
• Polypropylene & Mica Damped Cone
• High-Excursion Poly-Foam Surround
• High Strength Custom Steel Frame
• 2" Aluminum Steel Frame
• 8 Gauge Push Pin Terminals

Description


Alpine brand icon

Authorized dealer



General Features:

  • 12" Single 4 Ohm BASSLINE Series Subwoofer
  • Power Handling:
    • Peak: 750 watts
    • RMS: 250 watts
  • Recommended Power Range: 50 - 250 watts RMS
  • Polypropylene & mica damped cone with Progressive Wavelet Rib (PWR) design
  • High-excursion poly-foam surround
  • Polyester progressive spider
  • Two-piece yoke with vented pole for improved air flow and voice coil cooling
  • High strength custom steel frame
  • Optional Protective Grille available KTE-12PG
  • 8 Gauge push pin terminals
  • 2" Aluminum voice coil
  • 60 oz. Single stacked magnet
  • Resonance Frequency (Fs): 30 Hz
  • Top-mount depth: 5-1/2"
  • Sensitivity: 87.6 dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product history:

Alpine W12S4 thumbnail
(newest, current model)
Alpine SWA-12S4 thumbnail
(previous model, replaced by Alpine W12S4 12" Bass Subwoofer)

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Alpine Bassline SWA-12S4 Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Alpine Bassline SWA-12S4 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Alpine Bassline SWA-12S4 Subwoofers

4 Channel Amp

Wiring Guide to Wire 4 Alpine Bassline SWA-12S4 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
BassLine Series
Subwoofer Size
12"
Peak Power Handling
750 watts
RMS Power Handling
250 watts
Voice Coil(s)
Single
Impedance (Per Voice Coil)
4 ohms
Voice Coil Diameter
2"
Frequency Response
22 - 200 Hz
Sensitivity
87.6 dB
Xmax (millimeters)
10 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Polypropylene
Woofer Surround
Poly-Foam
Magnet Structure
Single Stacked
Subwoofer Grille
No
Re-Cone Kit Available
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Minimum Sealed Box Volume
0.75 cubic feet
Optimum Sealed Box Volume
1.09 cubic feet
Maximum Sealed Box Volume
1.5 cubic feet
Minimum Ported Box Volume
1.5 cubic feet
Optimum Ported Box Volume
1.91 cubic feet
Maximum Ported Box Volume
2.5 cubic feet
Top-Mount Depth (Mounting Depth)
5-1/2"
Cutout Diameter
10-9/16"
Shallow Mount Installation
No
Electromechanical Parameters
Free-Air Resonance (Fs)
30 Hz
Equivalent Compliance (Vas)
67.8 liters
Total Speaker Q Value (Qts)
0.49
Electrical Q Value (Qes)
0.53
Electrical Resistance of Voice Coil (Re)
3.6 ohms
Mechanical Q Value (Qms)
7.07
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

SWA-12S4

Weight:

12.50lbs

Internal SKU:

swa12s4

Internal Product ID:

72379

Product and How-to Videos


  • Car Subwoofer Size Buying Guide | What Size of Sub Should I Get?

Customer Ratings & Reviews



5 star
78%
4 star
22%
3 star
0%
2 star
0%
1 star
0%



Durability
4.8
Value
5
Features
4.9
Design
4.9
Usability
4.9

Customer Reviews

Sort by:

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great sub.

I have a dodge Dakota and I pit a single 12 in a bandpass box with 200 watts rms it hits hard enough to flex.thank you sonic.

By clown on July 4, 2014

43

found this helpful.

Alpine SWA - 12S4

This sub woofer is pretty loud and kicks pretty hard for something so cheap and affordable . Better than what I expected.

By Jaex on April 11, 2014

42

found this helpful.

Good Sub

This is a good sub. I would recommend it.Alpine has always been a good brand and for the price this is a really good sub. Haven't had any problems with it and you don't need a lot of power to get it to hit. If you want some good bass to round out your system this works.

By Yeti on January 20, 2014

40

found this helpful.

good cheap loud bass filled woofer

Didnt pay much and this Lil pup rocks hard crisp clear clean. Bass

By polywogles on June 17, 2014

38

found this helpful.

best bang for your buck

i ordered 8 of these subs and they are amazing.. especially for the price... i would and always do business with sonic electronix and would highly recommend them for all that they sell...

By street dr3amz on November 14, 2014

36

found this helpful.

Thanks sonic!

When I first got this sub and hooked it up in my escalade ext it sounded real good nice hitting lows and clean hard bass I totally recommend this sub for everyone that like clear crisp bass.

By james on July 14, 2014

38

found this helpful.

Wow

Wow. Absolutely under rated. These in a 4^3 box ported to 32hz and they're louder than my single 15" l7 and 2 12" type R's in a ported box.

Very good sub for the price. would recommend to everyone.
they're windshield flexing a nissan altima.

By james on October 7, 2013

36

found this helpful.

Great sub for price

Great sub for price really bumps on my 1000.2 autotek amp would recommend to any beginner or expert can't go wrong with alpine

By bryan on May 1, 2014

35

found this helpful.

pure bass

got 2 hooked up to 1000watt amp [500 each sub] and its flexing my windshield and the sound is insane wish i had more room for 2 more lol but by far best bang for your buck

By bass head on October 12, 2013

33

found this helpful.

Awesome Sub

Fantastic Sub, any sub in the right box will sound awesome, but this sub hits hard. Two of these in a 3.8cube box has change dancing in my cup holder. The only thing i dont like is the leads are not woven into the spider, but what do you expect for 55$? Recommend these to anyone.

By Wes on October 18, 2013

31

found this helpful.

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