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Polk Audio MM1240DVC

12" Dual 4 ohm Marine Certified Mobile Monitor Series Car Subwoofer

3.8

(4 reviews)

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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.
  • 12" Dual 4 ohm Mobile Monitor Series Subwoofer
  • Power Handling:
    • Peak: 850 watts
    • RMS: 425 watts
  • Impedance: Dual 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
  • Frequency response: 27-200 Hz
  • Sensitivity: 88 dB
  • 1-year SonicElectronix.com warranty
Product History:
Polk Audio MM1240DVC thumbnail
(newest, current model)
Polk Audio MOMO MM2124DVC thumbnail
(previous model, replaced by Polk Audio MM1240DVC)
Subwoofer Specifications
Subwoofer SeriesMobile Monitor
Subwoofer Size12"
Peak Power Handling850 watts
RMS Power Handling425 watts
Voice Coil(s)Dual
Impedance (Per Voice Coil)4 ohms
Frequency Response27 - 200 Hz
Sensitivity88 dB
Xmax (millimeters)25 mm
Subwoofer DesignRound / Circle
Main Cone ColorBlack
Woofer CompositionPolymer/Mica Composite
Woofer SurroundButyl Rubber
Subwoofer GrilleNo
Re-Cone Kit AvailableNo
Recommended Enclosure Specifications
Recommended Enclosure TypeSealed
Minimum Sealed Box Volume.88 cubic feet
Maximum Sealed Box Volume.88 cubic feet
Minimum Ported Box VolumeN/A
Maximum Ported Box VolumeN/A
Top-Mount Depth4-5/8"
Cutout Diameter11"
Shallow Mount InstallationNo
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration1 year
Labor Warranty Duration1 year
Warranty ProviderSonic Electronix
Customer Review Summary for Polk Audio MM1240DVC
Average Customer Rating is 3.8 out of 5 stars:
3.8
based on 4 Reviews
Share your thoughts with others:
Rating Distribution:
5 star:
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.
50%
4 star:
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0%
3 star:
.
.
25%
2 star:
.
.
25%
1 star:
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0%
what's this?
Average Attributes Rating:
Durability
3.3
Value
4.0
Features
4.3
Design
4.5
Usability
4.8
what's this?
Quick Comparison:
Most Helpful Customer Reviews:
October 20, 2009 Polk mobile moniter 12" woofer Review
1 of 1 people found the following review helpful:
Review by
Tom from Apex, NC
Overall
Durability
Value
Features
Design
Usability
This has been the most amazing sub i have herd in a long time. For a 12" woofer it has the response of a 10", very crisp, very clear, has not distorted them, but i only have a 800w. But I have had no problems, and will definitely buy more
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March 25, 2011 Awesome sub...
Review by
Chris from CA
Overall
Durability
Value
Features
Design
Usability
I recently bought a single cab Toyota p/u that has two of these installed behind the seat. The seat still slides all the way back, so no loss of leg room. They sound great even with them being way under powered. Polk used a different material for the magnets enabling them to significantly reduce the size of the magnets, which is great for fitting a sub in tight space without going with a shallow mount sub. Overall I'm very impressed.
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December 23, 2010 Not what I expected.......
Review by
Apollloshep from Charlotte, NC
Overall
Durability
Value
Features
Design
Usability
I bought 2 of these and around 1.5 months one died then the other 2 weeks later. I may have gotton a bad batch since I have had Polks before. When they worked they sounded great. I decided to return these for another brand. For an extra 10 bucks you can get a set of 12"s that weigh 8 to 10 pounds more per sub and better voice coils and magnets. So far I have been happy with the new subs.
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October 12, 2010 Don't rely on Polk's home audio reputation
Review by
Shannon from Columbus, MS
Overall
Durability
Value
Features
Design
Usability
I own several thousand dollars worth of Polk audio home equipment and it is top notch. I assumed that their car audio would follow suit. This speaker sounds great, but did not last very long. I have owned JL audio subs for years without any failures, but this sub failed after 6 months. Buy Polk audio for your home, but stick to JL audio for your cars.
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Subwoofer Grilles
Protect your subwoofer while making your enclosure look great! These subwoofer grilles are the perfect addition to your new subwoofer.
 ProductPriceAdd?
12" Universal Subwoofer Grille12" Universal Subwoofer Grille
Protect your subwoofer with this aluminum grille that is simple to install.
$9.99
Speaker Wire
Choose from our recommended speaker wire to hook up your amplifier to your new subwoofer. The higher quality of speaker wire that it used for this connection, the better your subwoofer will sound.
 ProductPriceAdd?
15 ft. of 12 AWG StreetWires Speaker Wire15 ft. of 12 AWG StreetWires Speaker Wire
This SuperCable from StreetWires is a noise free link between your amplifier and your subwoofer.
$19.99
20 ft. of 12 AWG Kicker Speaker Wire20 ft. of 12 AWG Kicker Speaker Wire
Kicker uses twisted pair technology and hyper-flex cable to provide you with the cleanest sound and a simple installation.
$24.99
50 ft. of 12 AWG Monster 302 XLN+ Speaker Cable50 ft. of 12 AWG Monster 302 XLN+ Speaker Cable
Monsters exclusive SingleHelix® and XLN® construction result in excellent sound reproduction.
$35.00
Sound Dampening Material
Get the most sound out of your new subwoofer with some high quality sound dampening material. It will keep the road noise out and the music inside the car.
 ProductPriceAdd?
Dynamat Rubber RollerDynamat Rubber Roller
Install your Dynamat with ease! This heavy duty rubber roller is designed specifically to install your Dynamat!
$18.99
Dynamat Extreme Bulk PackDynamat Extreme Bulk Pack
36 ft. Dynamat Xtreme Bulk Pack enhances the sound for your entire car!
$149.99
Enclosure Accessories
These accessories are designed to help you build the custom enclosure that you have always wanted, or add to the box that you already bought. Either way, these products can assist you in achieving better sound, better looks, and more bass!
 ProductPriceAdd?
20 oz. Bag of Poly-Fil20 oz. Bag of Poly-Fil
Polyester fiber fiberfill adds better bass to your system.
$5.99
16 oz. Can of Adhesive Spray16 oz. Can of Adhesive Spray
Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.
$5.99
Spring Post Terminal CupSpring Post Terminal Cup
Makes adding a spring post terminal to an enclosure simple! Banana clip ready!
$2.99
Binding Post Terminal CupBinding Post Terminal Cup
Use this to easily install a binding post terminal to your subwoofer enclosure.
$2.99
Banana Clip TerminalsBanana Clip Terminals
These high grade banana clips allow you to plug into your banana clip ready terminal for a secure connection.
$4.99
System Optimization and Tuning
Use these items to assist in testing and tuning your new car audio system to perfection!
 ProductPriceAdd?
AutoSound 2000 CD-101AutoSound 2000 CD-101
Low frequency test CD
$12.99
AutoSound 2000 CD-102AutoSound 2000 CD-102
High frequency test CD specifically designed for the set-up and evaluation of sound system imaging and placement.
$12.99
AutoSound 2000 CD-103AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.
$12.99
Main Product
 ProductPriceAdd?
Polk Audio MM1240DVCPolk Audio MM1240DVC$119.99
Related products
Polk Audio MM1240
12" Mobile Monitor Series Subwoofer • Single 4 ohm • 800 watts Max • 425 watts RMS • Polymer Woofer Cone • Butyl Rubber Surround • Carbon Composite Basket • Marine Certified • Klippel Distortion Analyzer

For more information on wiring subwoofers, visit our Subwoofer Wiring Guide: Subwoofer Wiring Guide

Product Summary

Manufacturer: Polk Audio
Model number: MM1240DVC
UPC: 747192114602
Weight: 16.00 lbs
Internal SKU: mm1240dvc
Internal product ID: 14747

Price Information

$229.95

–$109.96

$119.99

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Customer Testimonial

Great service and fast shipping especially around the holidays.

- Husein O. from Spokane, WA

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