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Polk Audio MM1240

425W 12" Mobile Monitor Series Single 4 ohm Marine Certified Car Subwoofer

Product videos
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• 800W Peak
• 425W RMS
• Polymer Woofer Cone
• Butyl Rubber Surround
• Carbon Composite Basket
• Marine Certified
• Klippel Distortion Analyzer

Learn more about the mm1240

We apologize

This item has been discontinued

Product Highlights


• 800W Peak
• 425W RMS
• Polymer Woofer Cone
• Butyl Rubber Surround
• Carbon Composite Basket
• Marine Certified
• Klippel Distortion Analyzer

Description


Polk Audio brand icon

Authorized dealer

The Mobile Monitor Series by Polk Audio is the result of 3 years of research and development. The series uses high quality materials and the newest loudspeaker technology to bring the listener an unforgettable experience. The best part about the MM Series is the affordable price.


General Features

  • 12" Single 4 ohm Mobile Monitor Series Subwoofer
  • Power Handling:
    • Peak: 800 watts
    • RMS: 425 watts
  • Impedance: Single 4 Ohm
  • Polymer woofer cone
  • Butyl rubber surround
  • Carbon Composite Basket is very lightweight and will not flex during use
  • Marine Certified
  • Nickel plated heavy duty terminals can be used with speaker wire up to 8 gauge or two twisted pairs of 12 gauge
  • Klippel Distortion Analyzer results in the best possible performance at any listening level
  • 2" High temperature copper voice coil
  • Also found as: MM-1240, MM1240svc, MM-1240svc
  • Frequency response: 22-200 Hz
  • Sensitivity: 92 dB
  • db Series Subwoofer Grill Available
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product history:

Polk Audio MM1240 thumbnail
(newest, current model)
Polk Audio MM2124 thumbnail
(previous model, replaced by Polk Audio MM1240)

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Polk Audio MM1240 Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Polk Audio MM1240 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Polk Audio MM1240 Subwoofers

4 Channel Amp

Wiring Guide to Wire 4 Polk Audio MM1240 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
Mobile Monitor Series
Subwoofer Size
12"
Peak Power Handling
800 watts
RMS Power Handling
425 watts
Voice Coil(s)
Single
Impedance (Per Voice Coil)
4 ohms
Voice Coil Diameter
2"
Frequency Response
22 - 200 Hz
Sensitivity
92 dB
Xmax (millimeters)
25 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Polymer/Mica Composite
Woofer Surround
Butyl Rubber
Subwoofer Grille
No
Re-Cone Kit Available
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Sealed
Optimum Sealed Box Volume
.88 cubic feet
Top-Mount Depth (Mounting Depth)
4-5/8"
Cutout Diameter
11"
Shallow Mount Installation
No
Electromechanical Parameters
Free-Air Resonance (Fs)
30 Hz
Equivalent Compliance (Vas)
38 liters
Total Speaker Q Value (Qts)
0.6
Electrical Q Value (Qes)
0.8
Mechanical Q Value (Qms)
3
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

MM1240

Weight:

16.00lbs

Internal SKU:

mm1240

Internal Product ID:

14748

Product and How-to Videos


  • Polk Audio Mobile Monitor Series Subwoofers | Product Overview
  • Car Subwoofer Size Buying Guide | What Size of Sub Should I Get?

Customer Ratings & Reviews



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



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Reviews

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the shallow speaker that could -- (rock your world)

installed 2 of those in chevy sierra 1500 extended under rear seat matched with kicker zx750.1 under 2 ohm load and while i normaly don't waste my time reviewing anything ----- those 2 deserve review enought for me to actualy sit down and type (i hate TYPING)

dont get me wrong they are NOT as good as SR series (no longer manufactured) but not very far behind ----- they handle anything from rap to rock right through some of the heaviest base hitting electronic !
you set your amp gain and eq right and you can and will switch betwen music genere without touching any controls in your head unit or adjusting eq (some older ROCK might require a little base boost)

if you are looking for SQ with some awesome pressure look no further they are not going to win against DD's or other 75 lb monstrocity designed for nothing but monster pressure under very narrow frequency band!!!

but any main stream (good Brand SUB) is going to have to work extra HARD to hold their own against MM series and it's a losing battle

i've compared them to several others and no JL, RF, RA, KICKER, MA is comming close to versatility of sound being reproduced (some get slightly louder but at much higher price bracket)

the recesed magnet is an awesome idea !!

dont forget your poly fill (10-20 oz. bag pet chamber) and take POLK.s advide and make your Bafle 1" thick MDF your ears will apreciate this very much and so will your amp !!!

P.S. i've tried those 2 powered by Hifonics Brutus BRZ-1200.1D and the efect was just as astounding !!!!!! and just my observation is the those subs do better in wel designed sealed enclosure of at least .7 to 1.2 cu ft per chamber ! - although i've installed a single mm 1240 under HIFONICS BRZ 1200.1D in sealed .62 cu ft (in my 2012 Toyota Yaris) in 4 ohm configuration with amp mounted upside down above my doughnut spare and absolutely love the result The sub POUNDS very hard and amp under 4 OHM load NEVER gets warm on normal weather and warm to touch durring the summer on the hotest of days !!!!


hope this helps some of you in making the decision to moove towards one of the best speaker out there from a manufacturer who is bent on SQ since they started in AUDIO !!!!!

By PALGUME on July 24, 2012

42

found this helpful.

The Best Sound

I bought these about 6 months ago and boy do they sound good. I did research on many name brand subs before finally deciding on these and I am very satisfied. The price was good but nothing can beat the base sounds that they put out, not even the price. I will never get any other subs but Polk. If you want nice sounding subs go with another brand but if you want the best sounding subs then pick up a pair of Polk Audio subs. From a man that's been listenning to bass all his life, you will be happy.

By E-Dub on June 21, 2011

42

found this helpful.

WOW

This sub is awesome! i bought two of them and they hit hard now i am gonna have to buy Dyanamat from sonic cuz they rattle the whole car! awesome sub in my opinion!

By oBEA5To on May 29, 2009

43

found this helpful.

The best money can buy

first of all this is the best sub money can buy, highly recommended for those who love music, specially some deep bass.
Pros: can handle all types of music, has good SPL potential, highly reliable, don't need much power even a small amp will do, looks cool, needs little space as compare to other subs, one is equal to 2 normal subs.
cons: please provide a grill
i am a SPL fan, I was using two jbl subs for a while, but the space and power requirement was a major concern.
i started searching for a sub which can deliver deep bass. After searching on various websites, i finally come across this sub, read reviews on various websites.
I bought one sub in a sealed box, believe me my first impression was "this is the sub i was waiting for", it took my breath away, it is a complete sub. one sub is equal to 2 jbl subs, great sub. All my friends were amazed by the pressure level and sound quality of this sub.
My system is updated on regular bases but this is the only thing which remains unchanged almost for three years. Finally if you love music this is a sub for you.

By M.D.M on January 11, 2014

40

found this helpful.

Polk Audio MM1240

i have a Pioneer head unit with 4 Kenwood 6x9s, a 1000 watts 5 channel and a 1200 watt mono amp. this MM1240 has great deep sound and hits hard. Go out and buy it you may like it to.

By Hammer on August 21, 2013

36

found this helpful.

loud and great sound

we love the sound that this put out its crazy and it dont distort or crackle

By Cory on March 10, 2015

36

found this helpful.

Love It!

I have one of these in my dodge durango running on a AP1200 Profile Amp and it hits hard and loud not to mention it also can hit bass in every range. I highly recommend this sub along with any of polk's products, thats all i have and they havent let me down whatsoever

By Alex on August 7, 2009

37

found this helpful.

the thump is back

I was using 2 jbl gt5 s12 sub's in my toyota innova, read about this sub on various sites believe me it deserves 5 star rating. It can out perform my 2 jbl subs with a ease, it sounds clean and can go very deep even with sealed enclosure. It is a only sub that can perform good with less power. My search for the best sub is over with this sub.

By manju on November 14, 2011

32

found this helpful.

Wonderful

These subs are incredible. I paired them with a 5000 watt (at 1 ohm) amp and they kick like a mother. I put 2 of them in an angled double 12" sealed sub box and they sound amazing. I love the sound they make in the sealed box, it is incredibly tight. They hit like no other sub i have heard. Every time i give people rides they are overwhelmed by them, they can easily get louder than your ears can take it you want haha. I see no cons to these subs, incredibly well built, i all most hated to put them in the box because they look so good all around. Pair them with polk mid woofers and tweeters and you will not be disappointed!

By Chris on September 17, 2013

31

found this helpful.

I now understand my purpose on earth

Listen forget jlw7 forget type r forget sundown audio forget re audio get this sub now any size 10,12,15 it's the most insane sub I've ever heard wowowowowwowowowowowowoowow. Hard clean tight clean deep low extremely clean it's absolutely breathtaking you have to trust me and buy this it out me in tears it was unbelievable buy this nowwwwwwwwwww.

By Melissa on July 23, 2015 Checkmark Icon Verified purchase

25

found this helpful.

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