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Polk Audio MM1040

Mobile Monitor series 10" 4-ohm subwoofer

19 Reviews | 4 questions - 5 answers

Item # 107MM1040

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Our take on the Polk Audio MM1040

Polk Audio's Mobile Monitor Series subwoofers bring out superior performance from lighter materials, so you'll get the impact you want without the extra weight of a conventional system. Advanced engineering and optimized components reproduce your sound with uncompromising accuracy, for low end that is rich and clear.

Polk Audio's Mobile Monitor Series subwoofers bring out superior performance from lighter materials, so you'll get the impact you want without the extra weight of a conventional system. Advanced engineering and optimized components reproduce your sound with uncompromising accuracy, for low end that is rich and clear.

The MM1040 10" 4-ohm subwoofer handles up to 350 watts RMS. A copper voice coil and neodymium magnet motor drives the polymer cone with exceptional efficiency. The carbon composite basket features a "wagon wheel" design that resists flexing during heavy excursion, so your sub hits solidly without distorting.

This sub is certified for marine use, and Polk includes corrosion-resistant stainless steel mounting hardware.

Priced per speaker

Product Highlights:

  • 10" 4-ohm subwoofer
  • polymer cone with butyl rubber surround
  • carbon composite basket
  • certified for marine use
  • optional matching grille complements the basket design
  • power range: 100-350 watts RMS
  • peak power handling: 700 watts
  • frequency response: 24-200 Hz
  • sensitivity: 91 dB
  • top-mount depth: 4-9/16"
  • sealed box volume: 0.66 cubic feet
  • ported box volume: 1.0 cubic feet
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • One 10" Single 4-ohm voice coil subwoofer
  • Foam gasket
  • 8 Mounting screws
  • 8 Speed-clips
  • Owner's Manual
  • Product Registration Information sheet

Polk Audio MM1040 Reviews

Average Customer Review(s):

(19 Reviews)

Polk Audio MM1040

Anonymous from Knoxville, TN on 3/24/2017

Crutchfield Customer Review (What's this?)




Great sub

Anonymous from Raleigh NC on 2/19/2017

2012 Ford F-150 FX2
Crutchfield Customer Review (What's this?)

Hits clean and deep for a 10. Big step up from my old shallow mount 10. Just ensure you leave a minimum of 2" clear from the face of your box to accommodate the mounting gasket, speaker surround and excursion - this sub likes to move!

Pros: Great sound, power handling

Cons: Took a bit more work to make it fit under my f150 super crew back seat than expected - but totally worth it. Huge step up in sound quality vs my old 10 inch shallow mount sub

Doesn't Sound Good!! Help!!

Matt from Great Falls, MT on 2/17/2017

Crutchfield Customer Review (What's this?)

I am not to sure yet if these were worth the money that I spent on a set. I just got everything set up today, also bought a new block amplifier to go with it............I have the subs wired in parallel into a 2-ohm load. I was reading the owners manual for the Subs and Polk says to allow for 20-30 hours of break-in time for optimal performance. I have 500 watts RMS going to both subs and they sound like crap!!! I do not have the door speaks hooked up to the hi-frequency outputs is that my problem or is my 5 year old Sony Xplod 50x4 head unit the problem? Or do I maybe need to play with the frequency levels and the low pass filter frequency? Or do I just need be patient and let the subs break in? I am extremely disappointed at the moment....My MTX dual 10" thunder series subs sounded better!! And they were rated @ 125RMS!! Someone please Help! I will post an updated review if I can remedy the situation...

Pros: Looks sick, they seem like they want to thump hard!!

Cons: Sounds like crap, is it just the 20-30 hour break-in period?

Crutchfield response on 2/22/2017 Once we saw this review, our Tech Support team reached out to Matt to issue an apology and help him further. We'll either help him get the sub sounding the way it should, or help him return it for an exchange or refund.

Polk Audio MM1040

Anonymous from College Station, TX on 11/1/2016

Crutchfield Customer Review (What's this?)

Great price. Does really well with 300 watts in a .7 cu ft sealed box.



loud with pinpoint accuracy

Cody from Springfield, MO on 10/15/2016

I have two of these in a big sealed box and let me tell you these things slam with very good accuracy. I haven't had any problems with them at all they have been hooked up to a jl audio wired at 2 ohms and the gain around three quarters of the way up and they took it no problem. that amp is underrated. I believe these subs are underrated. if you buy these you will be jaw dropped.

Pros: everything about them

Cons: doesn't have any

Polk Audio MM1040--Outstanding

J.F. from Richmond, KY on 8/22/2016

Crutchfield Customer Review (What's this?)

Replaced a pair of JL 10W0v3's with these in my 2013 Tacoma doublecab. Anyone who has this truck understands there is not much space or depth to work with behind the back seat, so I am forced to use subs with shallow mounting depth. The 10W0's were good, but their low sensitivity and lack of preciseness left a little to be desired. Tried JL 10W1's--terrible performance in my particular set up (.75 cu ft per sub sealed, running off an Alpine PDR-V75, getting 175 watts RMS each at 2 ohm); very weak and "sputtery", no punch whatsoever. Saw the Polk's, with their higher sensitivity and power handling, spoke with Brandy, one of the Crutchfield advisors (excellent customer service), and thought these might be a more potent option. Absolutely. These subs, in the exact same set up as the 10W0's--same box, same amp settings, same EQ set up, same crossover points--are heads and shoulders above the JL's. The lows, the punch, the clarity, the loudness are all much better when played at the same volume. Please understand, I'm not saying the JL's, W0's or W1's, are bad subs, they are just significantly outperformed by the MM1040's in my particular set up. There's absolutely no comparison. And they've only been in my truck for 2 days, they're not even broken in yet. These are outstanding subs; well worth the money. Thanks Brandy, and thanks Crutchfield. Always a pleasure.

Pros: Excellent lows, sound quality, and clarity, even at low volume/wattage

Cons: None

Excellent price versus performance

Steve from Phoenix, AZ on 5/7/2012

I bought two of these hoping they would sound as good as my Polk door and rear deck speakers and they do. They produce clean punchy bass and get down low. They also have a high sensitivity rating which makes them sound louder than a typical 350 watt subwoofer. They do require about a 30 hour break in period before they sound there best. When I first hooked them up I just thought they were okay but after that time period they started to rock.

Pros: clean, articulate, punchy bass

Cons: at this price you cannot complain

Great Polks

tnrubicon from TN on 5/4/2012

Crutchfield Customer Review (What's this?)

Great sounding subwoofers! The sound quality is definitely there. Plenty loud enough for, I'm not trying to win any db contests. My amp is under rated for these subs, can't wait to get a new amp.

Pros: Small but loud. Don't take a lot of space. Price! Looks! Quality .

Cons: I didn't buy them sooner

Impressive range

Art from Raleigh, NC on 5/4/2012

Over all, I am quite pleased with this sub. I needed a driver that was relatively shallow (when compared to some of the other 10" subs sold here) as it went into a custom MDF and fiberglass enclosure that fits snugly into my spare tire. Total enclosure volume came out to .7 cubic feet and I stuffed it with ~10oz of poly-fill. I'm driving the sub with an Eclipse XA1000 in a 2-ohm wiring configuration. Polk recommends 20-30 hours of break-in time before the sub will reach full excursion potential. That being said, I'm still quite impressed with how low it can extend and how hard it is willing to punch. I turned the bass boost down to +3db and gain down to about half on the amplifier to prevent over-powering the sub and to try and match it to the rest of the system (stock Bose system in a MazdaSpeed 3) Base in the sealed enclosure is very tight and responsive.

Pros: Good build quality. Decent power handling. Relative shallow. Good frequency response.

Cons: Outer lip of the driver is not "standard" dimensions requiring some "adjustment" of my enclosure with a recessed mounting hole. This is more on me however as I should have waited for the driver to come in before cutting and routing the enclosure.

Polk MM1040

Jay from Madison WI on 4/22/2012

I'm putting 4- MM1040's in my boat, powered by 2-JL Audio's MHD 750's. I hope it will sound GREAT. I'll let you know.

Pros: Picked them because they had the highest RMS rating. And the are Marine rated AND tested

Cons: None yet

Polk Audio MM1040

gerard from Bakersfield, CA on 4/15/2012

Crutchfield Customer Review (What's this?)

All the reviews are true. High quality sound. It plays low bass notes very accurate and clean. Compared to JL10W1 which I first ordered and returned, MM1040 sounds much better. The bass blends very smoothly with my MM6501 front speakers . Im very satisfied. Crutchfield return policy is amazing.

Pros: Accurate clean bass.

Cons: Speaker grill sold separate.

Much better than other subwoofers

Audio Nut from Woodbine, Maryland on 3/18/2012

Crutchfield Customer Review (What's this?)

The Polk MM1040 subwoofer is better than the $1000 24" unit I had previously! It hits much harder, and goes as low. I have two of the MM1040 in my sound room, and one in my car, and may yet get another for the TV sound - it is that good. In rock music I can hear differences in how the drummer strokes the drum, how bass guitarists make short distinct fast runs of notes, and in little "pre-notes" that precede the main bass note. In some current pop music I can hear differences in the synthesizer bass as it changes character during the course of a song. I have heard improvement even on ancient 1950s blues music! The technical explanation for this is that the speaker has a Qts of 0.45 with a very small Vas of 18 liters, which is difficult and expensive to achieve. This allows it to be placed in a small pre-made 0.85 cu Ft box (Parts Express) and stuffed with 1.75 Wal-Mart fiberfill pillows to achieve an ideal Q of 0.577 for the entire system. The result is very low, hard hitting, and tight bass. A smaller box will increase the Q above 0.577 and change the rolloff that must be compensated.I have achieved flat bass, using a signal generator, to 24 Hz in my 2000 Explorer due to the "room gain" of the cabin. I can only discern pitch to about 27 Hz; below that it is mainly a shaking feeling.

Pros: With some boost I could get to 18Hz (lower limit of generator), but it felt the same as 24 Hz. There was no buzzing, doubling, or any other sound than what was coming from the generator, and things rattling in the glove compartment. In my listening room, I added bass boost to compensate for the predicted rolloff, and achieved equally low bass, which rattled the window springs!

Cons: It should be noted that the lowest pitch of a standard bass guitar is 40 Hz; drums are about 28Hz, the lowest 16' organ pipe is 32 Hz, and a (rare) 32' organ pipe is 16Hz. Most synth pop music goes no lower than 30 Hz. So this subwoofer in my car covers all notes except maybe 32' organ pipe. I would try to use this subwoofer . The larger models also have a low Qts, but a larger Vas, which will require a bigger box to achieve the ideal Q of 0.577.


Anonymous from Dothan, Al on 3/17/2012

Crutchfield Customer Review (What's this?)

This sub is simply amazing in every way from the sound to te construction, wouldn't change anything about it , awesome buy!

Pros: everything

Cons: none

Great Sub

Buzr from AK on 2/25/2012

Crutchfield Customer Review (What's this?)

I bought this to put in a MTX Thunderform and it is amazing. It handles and sounds like a dream. It goes much lower than I thought it would and the form factor makes it a perfect fit for a MTX Thunderform for smaller trucks. I'm used to two 12's or two 10's and this one 10" sub is on par with what I used to run. I love Polk and this is a truly great sub. Also - my experience with Crutchfield was my best customer experience with any vendor in as long as I can remember. They answered all of my questions before I purchased my items and followed-up multiple times after. It seriously doesn't get any better than this in terms of customer experience. I'm so used to companies that don't care, and this goes for any type of store, but Crutchfield is in a world of it's own.

Pros: Size, sound, quality, design.

Cons: Wasn't free

Amazing Sub

Steve from Macon GA on 3/21/2011

Bought just 1 MM1040 for my 2001 GMC extended cab truck. I am driving it with a Lightning Audio LA-600M mono block amp. Even though amp is rated at 400 watts in mono block,and the speaker is only rated at 350 watts, I've had no problems what so ever. The sound is incredible. This one sub sounds better than many 2 sub systems I've heard. Hits really hard with no distortion. I've got it in a small non-ported wedge box under the back seat. Still can't get over the power of such a shallow sub. I'm so impressed, i'm going to get two of these and a 1,000 watt amp for my Mustang convertible.



These 10's Really Lower The Boom!

Ronny from Lexington, KY on 2/14/2011

Crutchfield Customer Review (What's this?)

This particular subwoofer, the 10" Polk Audio MM1040, is rated to handle up to 350 watts RMS. They have a relatively high SPL, 91dB, and their excursion (Xmax), 25mm, is more in line with 12" or even some 15" subs. These subs can really move some air! At the time of purchase, I was considering Alpine Type R's, Rockford-Fosgate P3 shallow, and Boston Acoustics G3's, along with the MM1040's. Because they would have limited airspace and mounting depth, neither the Type R's nor the G3's would fit, leaving it between the Rockfords and these. Both were on sale so the price would be about the same. Listening to these and the P3's at a local car audio shop, there was no question about it. The Polks sounded so much better. They go lower without a hint of distortion. I've owned Alpine, MTX, and JL Audio subwoofers that cost more but don't sound as good as these. For the price, you'll really be challenged to find a better subwoofer. You may find ones that have better specifications on paper, and some that claim to handle more power. Certainly you'll be able to find subwoofers that cost less. But the Polk Audio MM1040 will likely have better sound, better quality, and better reliability.



Polk Audio MM1040

matt from Houston, Tx on 3/17/2009

Installed in F150 in custom downfiring box. .65 Paired with polk amp. Great for all types of music. In case anyone was wondering the xmax is 1 inch, a full inch! This caused some problems with the sub bottoming out on the floor when it hit.



2 thumbs up

charles from Hawaii on 1/23/2009

Crutchfield Customer Review (What's this?)

I'm very pleased with these polk mm 10 incher. It does not have the output of a JL 10w3 and the sound quality is similar to a IDQ10. Overall its a great sounding sub and it is nicely built and priced right. The shallow mounting depth and a .66cuft sealed enclosure is a plus! I have this powered by a C2k amplifier. Oh and I just ordered another. Thanks Crutchfield!



one of the best!

Chad from Wrightsville, Georgia on 1/12/2009

I reciently installed this sub with an Alpine 300 watt mono amp under the rear seat of my F-150 in a down fire sealed custom enclosure. All I can say is wow! I wanted a sub with more sound quality than just boom; but, I GOT BOTH! I must admit one of the main reasons for buying this sub was for its thin profile. (I have read some negative things about the sound quality of shallow mount subs, and wanted to avoid a true shallow mount.) I have installed audio systems in my vehicles for since 1992, and these subs are by far the best I have owned. I can only imagine what the Polk SR series sounds like.




Hands-on research

Product Research

Enclosure Compatibility


Klippel Optimized: Using a state-of-the-art Klippel Distortion Analyzer, Polk engineers were able to optimize the woofer's motor structure, voice coil alignment and suspension for the best possible performance, even at extreme listening levels.

Polymer Woofer Cone with Butyl Rubber Surrounds: The Polymer Woofer Cones and Butyl Rubber Surrounds will not break down over time and will survive the rigors of harsh automotive environments.

High Temperature Copper Voice Coil (50mm) and Polyamide Former: High Temperature 50mm Copper Voice Coil and Polyamide Former withstand the most rigorous use while maintaining extremely low distortion for bass punch and output.

Carbon Composite Basket: The woofer's carbon composite basket is lightweight and will not flex during music audio peaks.

Nickel Plated Heavy Duty Input Terminals: Nickel plated heavy duty input spring-post terminals accommodate speaker wire up to 8 AWG or twisted pairs of 12 AWG.

Preconditioning Period: Mobile Monitor subwoofers will achieve even greater performance once they are thoroughly broken in. To break in your new MM subwoofer, play 20 to 30 hours of music at moderate levels.

Marine Certified Woofer: Polk MM Series woofers are built to withstand exposure to moisture and UV rays, so they work well in boats and cars. They also include stainless mounting hardware for corrosion and rust resistance.

Enclosure Compatibility

Recommended Sealed Box Volume: Polk recommends mounting this woofer in a sealed enclosure made out of 3/4" MDF with an internal volume of 0.66 cubic feet.

Recommended Ported Box Volume: Polk recommends a ported enclosure made out of 3/4" MDF with an ideal internal volume of 1.0 cubic feet using a slot port measuring 13.5" wide x 1" tall x 20" deep.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Marine grade. [ Ron  Mar 24, 2017 ]
Good product and reviews. [ Daniel  Mar 21, 2017 ]
Had really good reviews [ Brandon  Feb 18, 2017 ]
I have been very happy with my past Polk Audio speakers. [ DAVID  Feb 02, 2017 ]
I have Polk speakers in my boat and the sound quality is exceptional. My stock subwoofer needed to be replaced, so I elected to stick with what I know to be good quality both in sound & product. [ Timothy  Jun 29, 2016 ]
I ordered the MTX thunderform dual subwoofer unloaded box and I ordered two of these to put in it. [ Willie  Jun 27, 2016 ]

4 questions already asked

I do not recommend connecting different subwoofer models (and definitely not different size woofers) to the same channel of amplification. The differences in power handling and frequency production between the models will prevent optimal performance from the subs and proper adjustment of the amplifier. [ Ryan  Mar 11, 2017 ]  Staff
I am thinking that would depend on whether or not you get the single or dual voicecoil version. And I would recommend getting the dual voice coil 2 ohm versions if your amp will support a 2 ohm load. If you get the single voice coil 4 ohm version like I did you cannot wire into a tandum 2 ohm stable load I tried this and it doe not work... And be prepared to buy lots of dynomat or other sound deadening material as these subs pound hard. [ matthew  Feb 27, 2017 ]
We do have some ported box options available for the Polk Audio MM1040. In order to figure out which is the best fit for you and your system, I would recommend contacting an Advisor directly by phone (1-800-324-9695) or online chat. They can go over all the available options in detail with you to ensure the best performance with your new subwoofer(s). [ Larry  Feb 21, 2017 ]  Staff
No free air. This subs performance will required the required .66 cubic foot enclosure [ Jose  Dec 30, 2016 ]
You can check to see if this will fit your vehicle by using our Outfit My Car tool: For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle. [ Krissy  Apr 04, 2016 ]  Staff