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Polk Audio MM1540

Mobile Monitor Series 15" subwoofer

33 Reviews

Item # 107MM1540

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Our take on the Polk Audio MM1540

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 MM1540 15" 4-ohm subwoofer handles up to 425 watts RMS, using a copper voice coil and neodymium magnet motor to drive 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.

Product Highlights:

  • 15" 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: 100-425 watts RMS
  • peak power handling: 850 watts
  • frequency response: 18-150 Hz
  • sensitivity: 93 dB
  • top-mount depth: 4-1/2"
  • sealed box volume: 1.50 cubic feet
  • ported box volume: 2.50 cubic feet
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • One 15" Single 4-ohm voice coil subwoofer
  • Foam gasket
  • Eight 1-1/2" Allen head self-tapping screws
  • 8 Speed-clips
  • Owner's manual (English/ French/ Spanish/ German/ Italian/ Portuguese)
  • On-line product registration information

This subwoofer is amazing. The cleanest bass I have ever heard. I'm a big fan of sound quality and not so much sound pressure. This sub delivers exactly what I expected it to in my 2005 Porsche Cayenne Turbo.

Brent, Smithfield, NC


Polk Audio MM1540 Reviews

Average Customer Review(s):

(33 Reviews)

Fantastic Sound Quality

Brent from Smithfield, NC on 8/5/2017

Crutchfield Customer Review (What's this?)

This subwoofer is amazing. The cleanest bass I have ever heard. I'm a big fan of sound quality and not so much sound pressure. This sub delivers exactly what I expected it to in my 2005 Porsche Cayenne Turbo.

Pros: -Sound quality -Efficiency -Low box cubic footage -shallow mounting depth -Handsome in an expensive car -Marine rated

Cons: -Hard to mount with the provided screws


Dub from SEATTLE,WA on 6/20/2017

I got 4 of these in duel 2.5cf isobaric enclosures, I've been running them hard for 5 years now, they handle 450rms each for hours on end. The subs need to broken in before you lay the power on capable of the 25mm xmax polk claims. Have no problem levitating blankets, Tshirts, hair tricks ect. Plan to pay 3x to 10x the cost for an equal.

Pros: Clean sub able to play low notes with authority, shallow mount, light weight

Cons: Long break in period, mounting ring could use reinforcement

Polk Audio MM1540

ryan from Salamanca, NY on 6/20/2017

2001 Chevrolet Blazer
Crutchfield Customer Review (What's this?)

sounds good easy install.



Polk Audio MM1540

Anonymous from Georgia on 5/28/2017

Had this in a dual Qbomb box that I cut in half and sealed (ballin on a budget) and in the trunk of a 91' Cadillac Brougham. If you know caddys that's alot of air space for one 15 and it handled itself perfectly. Running a alpine 500wattrms amp and it was always on point. Now trying to put it in my 97' Sierra so it should pound even harder BUY ONE



Polk Audio MM1540

Jason from CA on 5/2/2017

2007 Toyota Tacoma
Crutchfield Customer Review (What's this?)

I built a 1.4 cubic feet box out of 1/2 floor under lament sealed with liquid nails polyurethane put behind Tacoma seat,300 watts rms it flipping pounds, I squeeze my nose and pop my ears lol sealed way to go I also have jl audio c2 525 in doors love it

Pros: Low bass hard tight

Cons: None

Polk MM1540

DoesDad from Tulsa, OK on 10/3/2013

Crutchfield Customer Review (What's this?)

Very impressed with this sub. I put it in a 1.9 cu. ft. sealed enclosure and I'm giving it around 400 watts or so off an older 2 channel Pioneer amp. I've run a lot of subs and this one of my favorites. I normally don't like sealed boxes. Seems like they stifles the output. This thing abolutely pounds sealed up and doesn't miss a beat in a box size that's normally reserved for a 12. I've had it for a few weeks now and I can already see that the more it breaks the better it's going to sound. At first it was pretty stiff, but sounded good. It's loosening up now and sounds even better. It's in the trunk of a '99 Monte Carlo. I normally run 2 12's ported and this time wanted to save some space. It was a good call! Don't think about it anymore. While they're at this price, try one out! If you for some reason don't like it sell it on CL and get something else. No harm, no foul.

Pros: Everything from output to SQ out of a 1.9 cu. ft. box.

Cons: None that I can so far...

Great product

Np from Omaha, ne on 9/17/2013

Crutchfield Customer Review (What's this?)

Would recommend




C from NY on 9/7/2013

Crutchfield Customer Review (What's this?)

Tight clean bass is all this is. Before I start not that this sub was properly broken in fully before i reviewed it. It CANNOT HANDLE MORE THAN 400 RMSc I promise you the people who say they give it more either have a amp thats way over rated or arent running proper voltage. This this will burn up suuper fast on you. Its not a spl sub. Don't make the same mistake i made and go by the reviews unless you can give it 400 rms and dont do loud volumes its a pure sq sub. way way better subs on the market. polk should stick to mids and home audio. I know there are tons of 5 stars not just here but other websties but i promise you will be dissapointed . 25mm xmax my you what!!!! this thing bottoms of so fast more like 12mm xmax!!! One last thing the other guy who said frame cracked well mine to you cant get a air tight seal because if you tighten screws the frame cracks i didnt even tighten the screws all the way before it cracked.

Pros: clean tight bass

Cons: everything, cheap frame,, very low power handling, no spl capabilitis, false xmax rating,

Bang for the buck!

thomas from Denver, CO on 8/31/2013

Crutchfield Customer Review (What's this?)

Wow! For a 15" sub under $100, I don't know that you can do much better. Sure wish I'd gotten a DVC before they sold out, but this 4 ohm sub still works great. Custom built a 1.75cu in box out of 3/4" MDF before the sub even arrived and the sound is rock solid. Pushing this sub with an Alpine MRV-M500 in an '11 Jeep GC with factory stereo and LOC. Don't even need to turn the LOC outputs up, nor amp gain or boost beyond half for this sub to hit some killer lows ... nice and smooth. Loved the low profile (speaker depth)!

Pros: Minimal mounting depth; no sacrificing quality for budget price

Cons: None!

Great Bass

Jose R from Caguas, PR on 8/15/2013

Crutchfield Customer Review (What's this?)

Great Sound!!!

Pros: Great price! Very Lightweight compared to others.



cc93 from Jefferson City Missouri on 8/5/2013

Crutchfield Customer Review (What's this?)

Loud sound really good love em

Pros: Loud

Cons: Burnt one up but got a new one

Awesome sub

Korey from Jacksonville Florida on 7/26/2013

Was skeptical but glad I got this sub. Have single cab truck so had to be a shallow sub. Fits good with enough legroom for a 6' person. Awesome sub especially for the money. Bought s/o m1500 with it and couldn't be happier. Going to buy 2 more for my sons mustang very soon. Great service as usual with crutchfield.

Pros: Hits the lows with authority. Great price.

Cons: None

love this sub and at a great price. can't beat it.

Big Al from Denver, Co on 7/25/2013

Crutchfield Customer Review (What's this?)

Love the sound.

Pros: light weight, Loud, Great Price

Cons: No Protective Cover. but can't beat it for the price I paid.

Holy Schnikes!

PhiSlammaJamma from New Orleans, LA on 7/24/2013

Here's the deal, for those of you complaining about the "small" magnet, do your research. These are Neodymium magnets, also known as rare earth magnets. These are Soooooo much stronger than the old bloated ridiculously heavy magnets you guys seem to be addicted to. Way more efficient and waaaaay lighter. Finally they are using tech that has been used in PA systems for a while now. Banging subs, Nuff Said.

Pros: Lightweight, clean, loud, efficient.

Cons: Not enough room in my truck for 4 of these.

Amazing Deal

Chris M. from Topeka, KS on 7/11/2013

Crutchfield Customer Review (What's this?)

I've been running a pair of these sealed at 1.5 cu. ft. each on 1,000 rms for over six months now, and I couldn't be happier. Would consider these worth the original price, at the current price they're an absolute steal. Very articulate for a 15, even better than some 10's I've had in the past. Handle the power beautifully, play everything I throw at them from hard rock to rap, country, dubstep..........there's really nothing bad to say about these woofers. Go buy some before they're gone.

Pros: Price, weight, compact enclosure requirements, sound quality.

Cons: None.

polk audio subs

diesel junky from maine on 7/4/2013

Crutchfield Customer Review (What's this?)

I bought two of these subs to go in my f350 super cab, they sound amazing! crazy loud inside such a small place.

Pros: great price, very good sound quality

Cons: none

Polk MM1540

Danny A from Houston, TX on 6/14/2013

Crutchfield Customer Review (What's this?)

Been running this for a month or so and let it break in for the first week. Installed this in about a 1.75-2.0 cuft. sealed box and I was pleasantly surprised at the tightness and cleanness from a 15" sub. Easily handles my 500 watt Kenwood sub amp.

Pros: price!! great sound

Cons: takes up half my trunk. lol


Luke B. from Upstate,NY on 5/30/2013

Crutchfield Customer Review (What's this?)

Great product with clear accurate bass.Competes with the best.

Pros: Price,sound quality

Cons: none

15 in polk audio mm

scottie from independence ks on 5/16/2013

I love them can't beat it for the price.



Polk MM1540

Angel670 from Saipan, MP on 5/16/2013

Crutchfield Customer Review (What's this?)

Awesome Sub!! Great for sound quality and hits hard in my toyota extracab truck. I am only pushing 150rms for the break in period and I am amazed with how hard it hits and the sound quality. The sensitivity is 93db so it really does not need a lot of power to hit hard. It feels like I am giving way more power. After I break it in I will push it wit 450wats rms. I placed it in a 1.5 sealed box and the sound quality is nice and tight. I was also surprised wit how much excursion this sub moves with only 150rms especially from a shallow sub. I was very skeptical when I saw the small magnet and it being a shallow sub. But now I am a true believer of Polk MOMO's. I'd say it hits like JL's. I used to have a JL10w6v2 and a 10w3v2. I could not be happier wit this polk, unless I had 2 of them I would be even more happy. I am always excited to drive to work and back just so I can hear my sub pound. keep in mind that my sub is in a sealed box so the sound quality is really nice and tight inside my truck but it does not sound that lout outside the vehicle. Thanks Crutchfield!

Pros: Everything about this is great!

Cons: None


Jose from San Diego, CA on 4/25/2013

Crutchfield Customer Review (What's this?)

All I can say is wow. I used to only get Alpine subs and I just happen to blow my 2 12 inch type E's and I was in the market for some new ones and I was going to get a Alpine Type S 15 inch but someone told me about these and I thought for the price I'd try it so I bought one and wow this sub hits better then my old Alpine subs and I'm only pushing 450 watts to this one sub. Now I'm still "breaking them in" so I still haven't pushed them all the way yet but just in the breaking in period there are times when this sub makes my ears hurt. I had a friend like this sub so much he bought two of them to replace his 12inch Alpine Type X & I can't wait to hear what 2 can do with 1100 watts pushing them. I don't know why some people are complaining that the magnet is too small. Come on people it's 2013 don't you think that they would come out with better technology so they wouldn't have to use such a big magnet. I guess some people want to stay in the stone age.

Pros: hits lows great

Cons: the cost of the sub is way too cheap

not too shabby for 90 dollars

branden j from indianapolis in on 4/22/2013

Crutchfield Customer Review (What's this?)

well i bought these on a whim. i have never had polk but have installed some components and heard them;read about them and heard good things. so i found these on sale and had some tax money to burn up; i mean; why save it ? so i scooped up four of these dudes. now ; i normaly buy kicker products i love the amps ; comonents and subs. i have had comps and L 7 and love the quality and sound. nothing beats like some L 7 on a good amp ! i wanted some 15" L7 but they were too expensive for me at this time. so i began my experiment. i purchased a 1.75 cuft box and a 2.5 cuft box both sealed. last year i had some L 7 10" in a ported box and was very impressed after the break in period. so tried one mm1540 in the 2.5 cuft box on a kicker ix1000.1 amp. it is single voice coil at 4 ohms so with this amp it was getting 500rms. now at first it was hitting ok not real hard but very accurate and sound very very very nice. not too boomy but had some good tactile feel. after 5 hours of play time this one sub in the back seat of my sedan was a menace. it was hitting so hard and so deep on many songs ( rap ) it would almost hurt my ears. so inside the cab these pass the test. but ..... outside of the cab it had no where near the bump ; the " knock" sound of my two 10" L 7. granted they were in a good ported box and fully broken in and there were two at full power. also these respond well / sound good on half tghe power. i tried them at 250 rms as well as 500.( ix500.4 bridged into two channel

Pros: inexpensive ; water resistant / uv resistant ; not as deep physcially as other subs ; requires much less airspace for shallow mount like truck or jeep; low power still makes these guys sing. these are very accurate sounding subs. they hit every note. they seem to play very deep tones pretty well considering the modest power ratings . spring terminals; very light weight; nice flat black color.

Cons: the ring that the surounds are attached two/ the ring that has screw holes to screw to the box is very delicate. it is made of plastic or something crappy like that. i have installed many subs / speakers and am very careful not to over tighten but with my drill on a very light torque setting the outer ring/basket cracked. when installing these hand tighten. the basket/ring will crack in two. but other than that dollar for dollar the kicker comp 15" hit harder.

polk 15" momo

home8d from Columbia SC on 4/15/2013

Crutchfield Customer Review (What's this?)

Bought this for a home theater sub. I was looking for awhile when I ran across this deal from Crutchfield. I always associated Polk Audio with quality. So I bought the sub. I built a 3.5 cu ft cabinet with a slotted port of 650 cu inches. It sounds incredible. I am running a 300 watt amp I purchased somewhere else. It rumbles the neighbors house. Having built many cabinets for kitchens and baths the sub enclosure wasn't a big deal.

Pros: Price vs performance is untouchable. Perfect for the money.

Cons: None so far.

mm 1540

dan from dallas,texas on 4/12/2013

Crutchfield Customer Review (What's this?)

cant beat the price on 15 inch speakers . i but them in a single cab truck with plenty of room to spare. i installed 2 with 3.1 cu feet off air space. sealed box .great lows.

Pros: very low profile great lows

Cons: no yet

Polk MM 15" subwoofer

W. Ray from Milwaukee, WI on 4/7/2013

Crutchfield Customer Review (What's this?)

This is my first experience with Polk products, and was somewhat skeptical. The subwoofer has a tiny magnet, making me question power handling abilities, and unattractive backing (limiting mounting styles).For the price I got more than expected. Being marine certified, I am not worrying about mounting sub in wheel well of SUV trunk.

Pros: Water-resistant, price, box size

Cons: Unattractive backside, tiny magnet

Great Sub

Anonymous from Massena, NY on 3/28/2013

Crutchfield Customer Review (What's this?)

Excellent speaker at a great deal.



Polk Audio MM1540

Herb from L.A., CA on 3/28/2013

Crutchfield Customer Review (What's this?)

The bass from this speaker is amazing. It as the tight sound of a 10 inch woofer, with the power and low frequency response of a 15 inch woofer. It can easily keep up with my Infinity component speakers in the from, I even have to turn the sub down so that I do not over power them.

Pros: Light, and shallow.

Cons: NONE

Can't be beat for this price!

Rob from Erie,PA on 3/20/2013

Crutchfield Customer Review (What's this?)

These subs sound great, still breaking them in, but wow. Untouchable at this price, can get nasty loud if you bring the watts!

Pros: Price, output, build quality, sound quality

Cons: none, well maybe the fact that they are tearing my car apart!

Excellent deal

Martinman from Los Angeles, CA on 3/19/2013

Crutchfield Customer Review (What's this?)

This is a fantastic sub as long as you have the space to fit it. I had three 12's and needed to downgrade to fit a stroller, couldn't have found a better deal. I still don't know why this sub is so low priced but take advantage of it. Sounds great with excellent specs and super thin. I built a custom box with 1.7 cu ft and it puts out clean sounding bass. I would definitely recommend this sub to anyone that can accommodate a wide sub.



what a deal

Jimmyboi from morriston FL on 3/11/2013

Crutchfield Customer Review (What's this?)

These can definitely handle like 450 true rms easy. Sound great an put out low hard bass. I got 4 and need like 8 more for this price why not ; )

Pros: Low bass great sound and very cheap

Cons: None

good stuff

Anonymous from menominee on 3/4/2013

Great subwoofer and for the price you can't beat it and hits the lows like crazy

Pros: Cheap and loud

Cons: None

Great Buy

Michael C from Gilbert, AZ on 3/3/2013

Crutchfield Customer Review (What's this?)

I'm still trying to figure out why this 15 inch sub is so inexpensive. It has everything going for it, It's a Polk product, the design is slim enough to make it a truck sub, It's a freakin 15 inch sub and I feel the specs are true to its word maybe ever dialed down from actual. It's just a bargain of awesome. I use to have a very used and very old 8 inch Bazooka, it was my first also, and I felt like getting something better, bigger, and better, so why not go all the way with a 15?

Pros: Sound quality, name, durability (have yet to hear it distort ever a little)

Cons: nothing


mitch from menominee on 2/23/2013

Crutchfield Customer Review (What's this?)

Amazing subwoofer and can't beat the price. I have 2 of these in a 6.2 cu.ft. box tuned at about 28-30 Hertz and all I can say is wow, these things hit the lows with ease, but they also hit mids very well and highs are ok which is more than I could ask from a 15 inch subwoofer. I only have them on a jbl 750ez (from Crutchfield) and it pounds like crazy. Shout out to Crutchfield for the fast shipping too!

Pros: Light weight (for a 15) and small enough to fit into smaller boxes and amazing price

Cons: None that I can think of other than the fact that they ripped the Aero port out of my box (not really a con tho)


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 surround will not break down over time and will survive the rigors of harsh automotive environments.

Voice Coil and Former: The 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.

Input Terminals: The nickel plated heavy duty input spring-post terminals accommodate pin connectors, single or dual banana plugs, or bare speaker wire up to 10 AWG.

Preconditioning Period: Mobile Monitor subwoofers will achieve optimum 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 speakers are built to withstand exposure to moisture and UV rays, so they work well in boats and cars.

Enclosure Compatibility

Sealed Box Volume: Polk recommends mounting this woofer in a sealed enclosure made of 3/4" MDF with an internal volume of 1.5 cubic feet.

Ported Box Volume: Polk recommends a ported enclosure made of 3/4" MDF with an internal volume of 2.5 cubic feet using a slot port measuring 18.5" wide x 1.25" 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.

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