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Power Acoustik MOFO-124X

1500W 12" MOFO Series Dual 4 ohm Subwoofer

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List price $249.95

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$115.95

with warranty

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Arrives by Friday, Jan. 2 to zip 07095

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Power Acoustik MOFO-124X 12" Subwoofer

When technology advances, products do as well. Does Lamborghini need to refine their cars every 2 years? NO, they do because they can. After 6 years, it is time for a change. Say “See Ya!” to the old MOFO, and welcome the new MOFO-X subwoofers! The new motor is refined and increases efficiency dramatically! MOFO-X subs use a non-pressed pulp cone for durability and smooth low bass. Like the original MOFOs, the new models use an aluminum dustcap that couples to the voice coil former and extends over the cone. Why? The fins brace the cone and eliminate cone flex during high excursion. Since the cap is aluminum and coupled to the coil former, it acts as a heat sink or heat extractor. Using the latest materials, the new MOFO-X subs yield superior performance!

Enclosure Recommendations

All enclosures should be made of .75” (3/4”) material only. When possible, make the baffle 1.5” (1 1/2”) thick and add .75” (3/4”) to the depth of the enclosure to compensate. All volumes INCLUDE vent/port and subwoofer displacements. DO NOT change the volume unless you plan on adding a substantial amount of bracing. For added performance, applying a coat of fiberglass resin to the interior walls will greatly improve sealing the enclosure. Adding a thin layer of poly-fill will improve response by smoothing out enclosure reflections.

Product Features
  • 12" Dual 4 ohm Subwoofer
  • Power Handling:
    • Peak: 2700 watts
    • RMS: 1500 watts
  • Impedance: Dual 4 Ohm
  • Non pressed pulp cone woofer
  • Polyether foam surround for enhanced excursion
  • Die cast aluminum frame
  • 2-1/2" 4-layer voice coil
  • Anodized aluminum former
  • Nickel plated 8 gauge compression wire terminal
  • 170 oz Strontium ferrite magnet
  • Royal blue finish with diamond cut accents
  • Die cast aluminum voice coil heatsink
  • Dual poly cotton spiders
  • Vented pole piece
  • Mounting Depth: 6-15/16"
  • Recone Kit Power Acoustik MOFO-124X-RC
  • Authorized Internet Dealer
  • 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.
MOFO (Power Acoustik)
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.
2700 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.
4 ohms
Voice Coil Diameter
Diameter of voice coil, usually measured in inches.
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
Not specified by manufacturer
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".
Not specified by manufacturer
Xmax (millimeters)
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.
15 mm
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.
Non-Pressed Paper
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.
Polyether 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.
1.00 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.
3.00 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.
2.00 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.
3.00 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.
6-15/16"
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.
11-1/4"
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
74%
4 Star
26%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.7
Value
4.8
Features
4.6
Design
4.8
Usability
4.8
AJ

Omaha

Overall
Durability
Value
Features
Design
Usability
Good Deal

February 20, 2012

This is a good sub for the price. I dont think there is a better deal out there. I have 2 hooked up to a 1500 amp (hifonics) running at 1 ohm. Before they were broken in I could smell them burning up a little bit so id turn em down but now they run pretty good. I think the RMS on them is not something to go by, I had a 122x mofo on this amp turned about 3/4 the way up and it blew in a few weeks. I am comfortable running the pair at 1500 watts RMS. I think 1500 watts is plenty, and at that level these subs KNOCK. I turn plenty of heads. I have played them loud and for long periods of time. If your on the fence about these subs I would buy them, get a hifonics 1500 and a you will need a charging cap or extra battery. You could easily spend twice the price and not get as much of a bang.

3 of 3 found this helpful

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J-Bass

Minnasnowda

Overall
Durability
Value
Features
Design
Usability
Best subs I bought ever!

November 1, 2014

I love these subs the design of them are great and the handle lots of power they're tearing my truck apart bass head for life.

1 of 1 found this helpful

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DjMoney

chattanooga tn

Overall
Durability
Value
Features
Design
Usability
fast and great service.

November 27, 2014

I recommend them to everyone fast shipment no hassle up to date with emails great job.. The power acoustik mofo's are rocking..

0 of 0 found this helpful

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Dain

Milan, IL

Overall
Durability
Value
Features
Design
Usability
Budget Bangerrrrrrrr!

November 23, 2014

If you lookn to get just above the average sytem but still don't wanna pay sundown prices this is the sub or subs for you,i just installed mine yesterday and I am super happy with my purchase.i have them running off a hifonics brutus x14 2600.1 super class d amplifier that I also purchased from sonic.luv the amp aswell!!!I got them wired in one ohm and these things sound terrific,had plenty subs b4 ,none that hit so nice.i do have big three,extra battery ,3 farad cap all purchased thru sonic.all of that is a plus!

0 of 0 found this helpful

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Zachary

Mentor, OH

Overall
Durability
Value
Features
Design
Usability
nice

October 23, 2014

Good subs they pound and can handle some power you gotta break them in for a while though

0 of 0 found this helpful

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will

Washington nc

Overall
Durability
Value
Features
Design
Usability
Loving it.....

October 8, 2014

Very good product Sonic electronic is the place to get electronic productI will recommend family friends neighbor and get their product from Sonic Electronics very good customer service As well.

0 of 0 found this helpful

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si

Colorado springs

Overall
Durability
Value
Features
Design
Usability
excellent

September 18, 2014

This sub hits hard hard hardhard hard hard hard hard

0 of 0 found this helpful

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Mad max

Conyers, Ga.

Overall
Durability
Value
Features
Design
Usability
A lot of bang for your buck $$$

August 27, 2014

These speakers generate killer base. Supply them with the right power & enclosure and get ready to be a amazed at the performance of these speakers. Sound deadening is highly recommended!!!!

0 of 0 found this helpful

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book

Dallas, TX

Overall
Durability
Value
Features
Design
Usability
Mofo review

August 14, 2014

These subs hit hard when i first hooked them up not sure why they don't hit as hard now but they still bang...i got them hooked up to a hilfonics 1100 amp in a pro box.

0 of 0 found this helpful

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took

saluda, va

Overall
Durability
Value
Features
Design
Usability
my 04 impala turn heads with the volume on 8

July 14, 2014

They are good subs the money is worth it I have 2 mofos running off a 1000 watt Sony explode they flexing my whole car

0 of 0 found this helpful

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Rocky Marshall

Kansas City, MO

Overall
Durability
Value
Features
Design
Usability
cool woofer

May 27, 2014

This sub hits hard, I have it on a Brutus 2000 at 2 ohms, supposedly pushin 1400 watts and it thumps hard. The back of the sub is cool looking.
The tabs that cover the screw holes on the front would be cool if they fit
perfectly, mine don't. Wish I would of got the 122x so I could get down to
one ohm and give it even more power. Anyway it's a good buy my mofo is just now getting broke in, it seems to be a thumpin beast, just remember
what brand it is and how much it costs its not a JL, Sundown, or a DD.

0 of 0 found this helpful

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Calvin

Monroe, NC

Overall
Durability
Value
Features
Design
Usability
Black&Blue Power X

March 7, 2014

Bought a pair of these subs and haven't had much playin time with them but I tried them a sealed box at 1.6cuft per chamber,with a line of polyfil with 2000watts at 1ohm and they don't sound too bad but I took the polyfil out and noticed they sound better and responded better and I did notice a. Burning smell in the box when I removed the polyfil so the next box I put them in will be 1.25cuft per chamber and I'm expecting better results,and for the price they're worth it.

0 of 0 found this helpful

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luv bass

lagrange, GA

Overall
Durability
Value
Features
Design
Usability
bass stops your heart

February 22, 2014

Hits hard and loud! If you like loud lots of bass?this is the sub. I was very surprised. I have a gmc Sierra ext cab and people are shock to hear that much bass from a truck. the only complaint I had to order deep mounted sub box on line...most audio places don't have deep box in stock.

0 of 0 found this helpful

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will

lagrange, GA

Overall
Durability
Value
Features
Design
Usability
hits hard

February 22, 2014

Excellent subs for the money. The subs hits hard and sound good.

pros: GOOD SUBS AT A GOOD PRICE....
cons: can't use standard truck box for ext cab truck. have to make or order custom box. which is not a problem...lots of web sites sell deep mounted sub boxes now.

0 of 0 found this helpful

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jimbo

Brookfield, ohio

Overall
Durability
Value
Features
Design
Usability
serious speakers!

February 11, 2014

These are heavy duty speakers and they hit really hard too I have two wired up to a Brutus 2400 watt mono. Great setup.

0 of 0 found this helpful

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seth

gray, LA

Overall
Durability
Value
Features
Design
Usability
great subs for price

January 28, 2014

I have two of these on a hifonics brx 2400 and these mfers bang. I have had 12s,15, and many other setups and none of them have even come close to the bass i get out of these things. I knocked my rearview mirror off of my windshield and still havent broken them in yet.

0 of 0 found this helpful

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Aron

Grand Ledge, MI

Overall
Durability
Value
Features
Design
Usability
unsure

October 15, 2013

Well i still haven't actually gotten to hear these things yet. I bought a prefab box to go with them because i didn't feel like building one yet. The box i ordered broke apart within the first week. They sound like they are going to slam tho. I am actually finishing my new box today and I am really excited to hear what these things can do. but so far they seem like they great subs especially for the price

0 of 0 found this helpful

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Sookie

Kaufman, TX

Overall
Durability
Value
Features
Design
Usability
Best bass for the money!!!!!

August 20, 2013

I have two of these mofos wired to 1 ohm running 2200 watts. They slam so hard in a ported box my windshield wipers bounce off my window like no tomorrow. But I would definitely recommend breaking them in before really cranking them. And I'm not too sure about 1500 watt rms per sub I'm running 1100 watt per sub and they get a little warm. Just be careful but these are great subs!!

0 of 0 found this helpful

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rob

pasadena,md

Overall
Durability
Value
Features
Design
Usability
power acustic mofo

September 20, 2012

the mofo sub is one of the best i have ever owened. great excursion.great sound. heavy bass.

0 of 0 found this helpful

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Johncwhatitb

Parma, Oh

Overall
Durability
Value
Features
Design
Usability
great buy

September 11, 2012

These subs sound great, it sound better with the 5500 bamf amp. If you love music these subs are great for the price & hit hard, so grab some.

0 of 0 found this helpful

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Accessory Tools and Products

Accessories added

25 ft. of Streetwires 12 Gauge Speaker Cable

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

Your Price $44.95

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

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 $1.99

Car Stereo and Speaker Installation Tool Kit

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

Your Price $14.99

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

Impedance Meter / Signal Generator

Easy to locate tuning frequencies of passive radiators and ported enclosures

Your Price $299.99

1 Power Acoustik MOFO-124X Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Power Acoustik MOFO-124X Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

3 Power Acoustik MOFO-124X Subwoofers

Mono Amp

4 Channel Amp

4 Power Acoustik MOFO-124X Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Browse 2 questions and 12 answers
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Why did you choose this?
Sonic Electronix Store
Can't beat the price. I've looked at almost every site and found no one cheaper. Same product and everything. I would recommend this site or all your car audio needs.
gary t on Oct 15, 2014
only brand I run.
Steven B on Aug 27, 2014
performance and price
Jermain J on Sep 15, 2014
is there any amplifier recommended for this product ?
Peter on Sep 4, 2014
Best Answer: You want to match your RMS wattage ratings of the speaker with the RMS wattage rating of the amplifier. It is recommended that you get a class D monoblock amplifier. Decide what ohms you plan to run the sub at then match the rms wattage of the speaker at those ohms with an amplifier. That is how you choose the proper amp for the subwoofer. I use a boss amp. And I run at 1600 watts rms at 4 ohms.
Reply · Report · Jackson O on Sep 7, 2014
· Add Answer · I Have This Question Too (0)

Product Summary

Manufacturer

Model Number

MOFO-124X

UPC

709483037229

Weight

27.00lbs

Internal SKU

mofo124x

Internal Product ID

33523

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: Power Acoustik MOFO-124X

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