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MA Audio HK12X2

12" Dual 2 ohm Hard Kore Series Car Subwoofer

Discontinued
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This item has been discontinued

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  • 12" Dual 2 Ohms Competition Subwoofer
  • Power Handling:
    • Peak: 3000 watts
    • RMS: 1500 watts
  • Impedance: Dual 2 ohms
  • Dual Layer Pressed Carbon Fiber Cone
  • Reinforced Ribbed High Foam Treated Surround
  • Bumped Back Plate For Maximum Excursion
  • Patented Thermo-Cooling Motor Structure
  • Ultra Strong Carbon Fiber Dust Cap
  • Hi-Temp Kapton Voice Coil Former
  • Aluminum Round Wire Voice Coil
  • Double Layer Progressive Spiders
  • Platinum Plated Block Terminals
  • Dual 2-Ohm Voice Coils
  • Rubber magnet boot cover
  • 400 oz. Double Stacked Strontium Magnets
  • 1-year Manufacturer's warranty

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
12"
Peak Power Handling
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.
3000 watts
RMS Power Handling
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.
1500 watts
Voice Coil(s)
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.
Dual
Impedance (Per Voice Coil)
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.
2 ohms
Voice Coil Diameter
Diameter of voice coil, usually measured in inches.
Sensitivity
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".
88.9 dB
Subwoofer Design
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.

Round / Circle
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Black
Blue
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Dual Layer Carbon Fiber
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Treated Foam
Magnet Structure
Defines the overall structure of the subwoofers magnet.
Subwoofer Grille
Most subwoofers are able to accommodate a universal grille; however, some subs include a grille and others have a specific, optional grille available for purchase separately. If "yes", then the subwoofer includes a grille. If "optional (sold separately)" the matching grille will need to be purchased in addition to the sub.
No
Re-Cone Kit Available
Some higher end subwoofers have replaceable cone assemblies. In case of a blown woofer, a recone kit allows for a simple replacement, as opposed to purchasing an entire new subwoofer.
No

Recommended Enclosure Specifications

Recommended Enclosure Type
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.

Ported / Vented
Sealed
Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.5 cubic feet
Optimum Sealed Box Volume
This value indicates the ideal sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
2.25 cubic feet
Minimum Ported Box Volume
This value indicates the minimum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
3.0 cubic feet
Optimum Ported Box Volume
This value indicates the ideal ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Ported Box Volume
This value indicates the maximum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
3.0 cubic feet
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
8"
Cutout Diameter
The actual diameter of the hole you will need to cut out if you are creating a new mounting location for this speaker, or if you are mounting a subwoofer in a box.
11"
Shallow Mount Installation
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.

No

Electromechanical Parameters

Free-Air Resonance (Fs)
The free-air resonance frequency of the subwoofer, measured in Hz. At this frequency the weight of the moving parts is perfectly balanced with the subwoofers suspension system.
Equivalent Compliance (Vas)
This is the amount of air that has the same stiffness as the subwoofers suspension. The greater the rating, the lower the stiffness and larger recommended enclosure. It is measured in Liters.
Total Speaker Q Value (Qts)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including all dimensionless losses. Essentially, a high Qts value (closer to 1.0) means the subwoofer is great for sealed enclosures and a low Qts value (closer to 0) means the woofer is great in vented enclosures. A Qts of around 0.45 means the woofer will work decently in either enclosure type.
Electrical Q Value (Qes)
The subwoofers relative damping (Q) at the resonance frequency (Fs), including electrical losses. Also called the mechanical damping of the subwoofer. The unitless measurement usually varies from 0.5 10.
Electrical Resistance of Voice Coil (Re)
Amount of DC resistance of the subwoofer when measured with an ohm meter. Typically, this will read less than the impedance rating of the subwoofer.
Mechanical Q Value (Qms)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including mechanical losses. Also called the mechanical damping of the subwoofer. This unitless measurement usually varies from 0.5 10.
Efficiency Bandwidth Product (EBP)
This number represents the trade off between having an efficient woofer and one with a wide bandwidth. To calculate this number, take the Fs and divide it by the Qes. If the number is below 50, the woofer is designed for a sealed enclosure only. If it's between 50-100 it can be used in either. Lastly, if it's greater than 100 it's designed for vented enclosures.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
68%
4 Star
18%
3 Star
5%
2 Star
0%
1 Star
5%

Average Attribution Rating

Durability
4.0
Value
4.2
Features
4.3
Design
4.4
Usability
4.3

mrey9217

racine,wi

Overall
Durability
Value
Features
Design
Usability

Good Value

March 12, 2013

I'm very happy with the MA Audio speaker! It is high quality system.

0 of 0 found this helpful

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lil will

knox

Overall
Durability
Value
Features
Design
Usability

Baaaaaaaaaaaasssssss!

December 6, 2012

These rock simple as that. These things are bad. I thought I had a monster in my trunk.

0 of 0 found this helpful

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Erik Green

Stanton, California

Overall
Durability
Value
Features
Design
Usability

BEST SUBWOOFER EVER INVENTED

November 1, 2012

This is the best subwoofer ever invented!! I love the low deep bass it produces... MA Audio is the brand I will always believe in.

0 of 0 found this helpful

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Austin

Canada

Overall
Durability
Value
Features
Design
Usability

Awesome

October 25, 2012

I'm powering this beast with a Fusion NV-AM25001 mono amp at 1 ohm 1790 rms, with a ported box with 3.0 cubic feet like what the manufacture said. and let me you tell this sub slaps like a mofo. Just this one sub does a lot of damage and shakes my truck like no tomorrow. I really recommend this subwoofer to everyone.

0 of 0 found this helpful

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Austin

Canada

Overall
Durability
Value
Features
Design
Usability

Beast

October 22, 2012

This beast can slap like a mofo. It is 41 pounds haha. The magnet is really big. It looks very clean, and I just love this sub. Great buy for the price. I would recondmend this sub to anyone that wants big bass with small budget. Or even just buy it. Powering it with a Fusion NV-AM25001 amp @ 1 ohm @ 1790 rms

0 of 0 found this helpful

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brian

oakhill w.v.

Overall
Durability
Value
Features
Design
Usability

good subs

September 9, 2012

these's r good hard hittin subs i own two of them n plainin on buying 2 more i have them on a Power Acoustik D1-6000D amp n they sound great hav'ent came to n e body thats beat me yet,i highly suggest theses subs dont listen to the bad reviews i read them to and it made me thank about it but i took the chance n i was pleased with them

0 of 0 found this helpful

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Ricky D

Pueblo Colorado

Overall
Durability
Value
Features
Design
Usability

WOW !!!! THIS SUB IS AMAZING

September 4, 2012

Ive had alot of systems in my day ! I was surprised to see this is one of the few subs that actually hit just about evry frequency ! ( In the right box of course ) But it will and it hits hard ! Im hoping it last for a long time Im considering buying 2 MA AUDO fifteens for my show car. Great Product thaks guys !

0 of 0 found this helpful

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Sean Michael

Las Vegas, NV

Overall
Durability
Value
Features
Design
Usability

Buy in pair

August 23, 2012

Its a sick sub just buy in pair. Also make sure you get a good amp. Solid sub for the money.

0 of 0 found this helpful

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DJ

Dallas, Texas

Overall
Durability
Value
Features
Design
Usability

HK12X2

August 5, 2012

This has to be the biggest, most expensive paper weight i have ever gotten. i purchased this sub, and within a week it was rattling like crazy. Thought maybe i had a defective sub so i returned it and within the first day, (in mind only putting little amounts of power at 1ohm) the sub was bottoming out like crazy, at certain Hz. Terrible, terrible, terrible sub. I've bought $50 Kicker subs that are 150W RMS that hit harder than this piece of dung. Save your money and buy anything else but this sub. Worst thing ive ever had.

0 of 0 found this helpful

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Timothy

Anchoragea, AK

Overall
Durability
Value
Features
Design
Usability

HARD HITTING SUBS

August 8, 2007

Ive recently bought a set of HK12x2 and found that the air space is wrong by the manufacturers specs we built box 3 cubic feet per chamber as per specs. the subs sounded very good on low notes high notes build s no pressure so we built a 2.2 cubic feet box and powered them and low notes intense and high end moves my windshield 3/8 of an inch impressive. it is also our findings the 3000 watt rating is a safe rating we are putting 4000 watts a sub and they hit like a mac truck and do not heat up and woofers do not sound fatigued or distorted. very loud 156.3 to be exact

2 of 4 found this helpful

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Brad

East Dubuque, IL

Overall
Durability
Value
Features
Design
Usability

Good sub, bad soft parts!

July 8, 2012

This sub has a very nice basket and motor, but the soft parts on it are just a joke! But this sub rebuilt is great! These subs produce great sound and very low bass! I love it

0 of 2 found this helpful

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Logan

Rudolph, OH

Overall
Durability
Value
Features
Design
Usability

MAN!

April 19, 2012

I love this sub. I'm not kidding you, only meeting about half the RMS at 1 ohm, people have honestly said it sounds like something is trying to break out of my trunk. Needs a big box, the person I bought this from built his box, and it's pretty big. Big box, big sub, big sound. Durability is 3 because I haven't had it for a while. I can't speak about it knowledgeably.

0 of 2 found this helpful

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Worm

Modesto California

Overall
Durability
Value
Features
Design
Usability

Hit'n hard, deep bass!!!

April 11, 2012

I just got two of these monsters a couple days ago, and hooked them up with my HiFonics Brutus 1200 RMS amp. So far I love these subs, great speakers at a decent price. I highly recomend these subs if you want good sound, and to be heard coming for blocks!!!!

0 of 2 found this helpful

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cc_audio

East Dubuque, IL

Overall
Durability
Value
Features
Design
Usability

Great platform, weak softparts.

May 22, 2011

These subs use a great basket and motor, and even the cone composite cone is really nice, but why they skimped on the spiders is beyond me. After two years on 1500W daily, both spiders on both of my subs gave up and ripped all the way around right at the former. They are notorious for this, especially in the north where cold weather speeds up the deterioration. I had mine rebuilt by faultline customs with mirror progressive spiders and now they are truly amazing subs. I don't know what MA was thinking when they used the spiders they did, they should've used the 10" spiders that basket was meant for. Or at least less brittle spiders. Buy cheap and have rebuilt, and you can own a really serious woofer.

0 of 2 found this helpful

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Bill Tuner

Cypress, CA

Overall
Durability
Value
Features
Design
Usability

I Love these Subwoofers HK12X2 by MA Audio

December 27, 2010

These are the best subwoofers I have ever heard. I love the deep bass MA Audio specializes in. MUCH LOVE!!!

0 of 2 found this helpful

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silverado ss

b-town

Overall
Durability
Value
Features
Design
Usability

they get pretty loud

October 22, 2010

I would buy another pair..I had them in my Silverado for a year and a half and in a big ported box they got real loud and low..there up there with my xfls

0 of 2 found this helpful

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Patric

Delphi, IN

Overall
Durability
Value
Features
Design
Usability

BEST MOFO

April 10, 2008

one of the best subwoofers i have bought i have purchased two from this website great subwoofer and it is loud

0 of 2 found this helpful

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ryan

anthem, AZ

Overall
Durability
Value
Features
Design
Usability

Excelent value

March 1, 2006

For the price, these speakers cant be beat. They put out alot of sound but do require a large box if you go ported and some heavy duty construction. They wont fit in any off-the-shelf boxes, but then you wouldnt want them to =) I'd put these up against fosgate stage 3s any day.

0 of 2 found this helpful

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Chris

Leominster, MA

Overall
Durability
Value
Features
Design
Usability

Great price for a boom

January 9, 2006

This sub is awesome. my friend just bought this and a MA audio 2000 watt mono. He used to have 2 JL' W3V2's and his trunk rattled a ton even with dynamat. Now wiht this sub i dont think hes going to have a trunk with all the bass coming out of it. i can hear coming towards my house from the end of the street and thats a good half mile. AWESOME SUB FOR THE MONEY!! GREAT BUY!

0 of 2 found this helpful

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Brett

Carrollton, GA

Overall
Durability
Value
Features
Design
Usability

Craziness

December 20, 2005

This sub hits very hard! Its reliable and ive had no problems with it after owning it for 5 months. I hit 144.3 dB's pushing approx. 1200 watts rms in a ported box in a car. Well worth the money.

0 of 2 found this helpful

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Accessory Tools and Products

Accessories added

Single 12" Subwoofer Angled Truck or Hatchback Box Enclosure

CARB Compliant, 5/8" MDF Shallow Sub Enclosure Lined with Polyfil.

Your Price $34.99

Single 12" Sealed MDF Subwoofer Enclosure

12-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/ Polyfil.

Your Price $34.99

Single 12" Ported Enclosure Custom Black Baffle

Gold Binding post terminals and a high quality 5/8" MDF construction.

Your Price $59.99

25 ft. of Streetwires 12 Gauge Speaker Cable

You'll need speaker wire to hook up that new subwoofer!

Your Price $44.95

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

20 Square Feet of Sound Dampening Material

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

Your Price $59.99

Dynamat Sound Dampening Trunk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

Your Price $109.95

Stinger Sound Dampening Trunk Kit

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for your whole trunk!

Your Price $69.99

12 oz. Can of Adhesive Spray

Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.

Your Price $6.99

Spring Post Terminal Cup

Makes adding a spring post terminal to an enclosure simple! Banana clip ready!

Your Price $3.99

40" x 15 Ft Piece of Premium Un-Backed Automotive Trim Carpet

Durable design for long life-span, available in many colors and shades.

Your Price $39.99

Gold Plated Dual Terminal Banana Plug Connector

Enables an expandable, secure connection accepting up to 8 gauge wire.

Your Price $3.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $12.99

Xscorpion 9-Piece Nylon Plastic Pry and Chisel Tool Set

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $14.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

Continuous working lock allows you to work without holding down trigger.

Your Price $79.99

4 Ft of 1/4" Thick Black Heat Shrink Tubing

Provides abrasion resistance and added protection for your cables.

Your Price $3.99

2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Universal rubber roller to make it easy to install sound dampening.

Your Price $7.99

1mm All Purpose Solder

Solder is all purpose for use on most projects where solder is needed.

Your Price $8.99

12" Protective Waffle Subwoofer Grille

Keep your subwoofer looking amazing while keeping it safe.

Your Price $4.99

Scosche SPL Meter

Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.

Your Price $21.99

AutoSound 2000 CD-101

Low frequency test CD

Your Price $11.99

Impedance Meter / Signal Generator

Easy to locate tuning frequencies of passive radiators and ported enclosures

Your Price $299.99

1 MA Audio HK12X2 Subwoofer

Mono Amp

Mono Amp - Option 1

2 Channel Amp - Bridged

2 MA Audio HK12X2 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

3 MA Audio HK12X2 Subwoofers

Mono Amp

Mono Amp - Option 1

4 Channel Amp

4 MA Audio HK12X2 Subwoofers

2 Channel Amp

4 Channel Amp

Product Summary

Manufacturer

Model Number

HK12X2

UPC

784620018613

Weight

38.85lbs

Internal SKU

hk12x2

Internal Product ID

4222

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: MA Audio HK12X2