Polk and accessories specialist MOMO have joined together to create the high-performance Polk/MOMO subs. These stylish subs deliver powerful, accurate bass that sets you apart from the pack — both sonically and visually.

The Polk/MOMO MM2104 10" subwoofer features a polypropylene concave "dish" cone, metalized for maximum rigidity. A huge, high-roll butyl rubber surround controls longer cone excursion for high-impact bass with lower distortion. State-of-the-art laser technology centers the voice coil perfectly in the motor structure's magnetic field for optimized performance.

These high-impact subs feature a triple venting system for maximum air flow, power handling, and reliability. Gaskets on the front and the back of the basket insure an airtight installation. This subwoofer is designed for use in a small, sealed enclosure.

Don't limit yourself to only using these subs in your car — they've passed tough environmental testing that certifies them for marine use as well.

Priced per speaker

Product Highlights:

  • 10" 4-ohm subwoofer
  • metalized polypropylene concave cone with high-roll butyl rubber surround
  • non-resonant, heavy-gauge stamped steel basket
  • professional grade, nickel-plated, locking push terminals
  • power handling: 50-300 watts RMS
  • peak power handling: 600 watts
  • frequency response: 24-200 Hz
  • sensitivity: 86 dB
  • top-mount depth: 5-3/4"
  • sealed box volume: 0.66 cu. ft.
  • suitable for marine use
  • Recommended Q-Logic Box Type: 1
  • warranty: 3 years
  • Our 60-day money-back guarantee

What's a component sub and why would I want one?

A component sub is simply a speaker that's designed to reproduce bass once it's installed in a compatible enclosure. Think about the impact of a movie soundtrack in a big theater or even in your own home HDTV setup. A component sub can add the same kind of power to the music in your car. And a car sub is not all about the boom that you hear on a street corner (although that's cool too) - you can pair a component sub with your choice of enclosure to get bass just the way you like it, from tight and punchy to fat and loose. And once you experience music in your car with a well-tuned subwoofer, you'll never go back.

Polk/MOMO MM2104 Reviews

Average Customer Review:

21 reviews
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Ohhhh yeahhhhhhh

Written By My_Fast, Philadelphia, PA on Monday, June 28, 2010

Crutchfield Customer Review (What's this?)

Sounds great. Had a pair of these and worked great for heavier music such as metal
and every variation of it. Works great as a pair especially for double bass drums and
quick kick drums. Has the fast response you want with the low hard hitting thump you
Definitely recommend.
Polk just rocks.


Written By Ben, texas on Wednesday, March 25, 2009

Crutchfield Customer Review (What's this?)

These subwoofer are excellent and better than any kickers or MTXs ive
owned and they hit just as hard...I have some youtube videos of them too.
Their flex is great and they hit lows with no problems

Fantastic Performance and Value

Written By Alexander, Long Pond, PA on Tuesday, February 24, 2009

Crutchfield Customer Review (What's this?)

These subs are not just good looking they sound fantastic. The build quality is top notch and the sound is powerful and clear. I bought two of them to compliment four Polk db Series series speakers. This is my first time purchasing Polk products and I'm happily impressed.

Exceptional sound for the price!

Written By Christopher, Charlotte, NC on Saturday, February 21, 2009

Crutchfield Customer Review (What's this?)

I have 4 Polk 5 1/4 speakers and they sounded ok, but had no bass. I wired up 2 ten inch subs in a cabinet behind my truck seat. Man, these puppys rock. I put the sesitivity at the middle and still had to turn the head unit bass and bass boost off. I still have to lower the sensitivity more. I am powering these with a Kenwood 300W RMS. Like I said, for this price you will not go wrong. I would have paid twice the price for these speakers. Jump on these for this price a pair, you will be set for many hours of clean bass!


Written By Tony, Wesley Chapel, FL on Wednesday, February 18, 2009

Crutchfield Customer Review (What's this?)

I upgraded from 2 10", and WOW!! what a difference. I had a friend calibrate it for me, and these subs sound awesome. One thing I noticed off the bat was the tightness of the bass. This makes songs with alot of bass sound really amazing. You ride down the street with a smile on your face :) With this price you can't go wrong. I don't know too much about subs, BUT I do know these hit. Perfect if you want some boom!!

Polk/MOMO MM2104

Written By Nicholas, Kentucky on Tuesday, February 10, 2009

These things sound great behind my truck seat I have them powered by a Profile AP1000M amp.

Good buy

Written By Kareem, New York, NY on Thursday, January 15, 2009

Crutchfield Customer Review (What's this?)

These subs are magnificent. I would have given them a five star rating.
But, the power handling stopped me. I have a pair in the trunk of my S430
in a sealed box. I'm running them wired parallel at 2 ohms, on a class D
amplifier at about turned up about 1/4 the way with two 1 Farad
capacitors. The bass I get from these subs is tight and clean. In this big
sedan I am very impressed. No distortion what so ever.

Best subs i've used yet!

Written By Sean, Johnstown, PA on Thursday, October 30, 2008

Crutchfield Customer Review (What's this?)

I was looking for some new subs after one of my old one's blew. I have used kicker and mtx in the past and these are way better. I am so glad I got these. They are run off of a kicker zx300.1 which is putting out about 400 watts. The sealed sound is perfect for my style of music, which includes: Rock, metal, industrial, techno, and mellow stuff like Incubus, Moby, etc. I also listen to alot of christian music like Skillet, Jars of Clay, Argyle Park, etc. Perfect subs for the money. My system also includes a Kenwood excelon headdeck, infinity kappa components and a kicker zx200.4 amp.

Polk/MOMO MM2104

Written By Jon, Tucson,az on Thursday, June 19, 2008

Crutchfield Customer Review (What's this?)

These are awesome i bought two of them and i built two boxs for my 95
dodge ram single cab they fit without any problems. they are the best
subs for the price i have a 1200 watt polk 2 channel amp i am using and
they sound great


Written By Michael, Seattle, WA on Friday, June 06, 2008

Crutchfield Customer Review (What's this?)

These woofers are very good. I listen to all types of music and they sound great. I have them in a sealed box that is .75 cu ft each side, with the basket displacement its the perfect size. Running off a 500x1 @ 2 ohms mono block in my 2001 M3 wired into the OEM HK system. They pound, they hit and play all ranges of bass very well. I dont get the most lower bass 30hz and below but that is to be expected though. I would recommed these over Kicker Comp, RF Stage 1 or even the JLW1. I have had many woofers in my time and these are by far the best bang for the buck. I would put these up against woofers that cost more and I think they would still hang. I am very happy. Thank you Polk and Crutchfield!

Polk/MOMO MM2104

Written By Nick, Boston, MA on Thursday, May 29, 2008

I hooked 2 of these up in a sealed Q Logic box with an MTX Thunder 600W amp. They sound tight and feel very strong! Regularly priced they are still less expensive than any other place by 20%.

Clean, tight bass

Written By No, California on Saturday, March 15, 2008

I have one Polk Momo MM2104 which replaced two Infinity Reference 10" (still a stocked product on here). I wanted some more room in my trunk so I went with the single Polk. The amount bass is the pretty much similiar to the infinity (which sounded great) but the Polk sounds cleaner. I have 250watts pushing it inside of my toyota matrix and I could not be happier. This is a phenominal sub at a great price, I would definetly recommend this sub to anyone.

Polk/MOMO MM2104

Written By Gordon, Central Florida on Saturday, September 22, 2007

Crutchfield Customer Review (What's this?)

All I can say is WOW! This thing punches so hard I can feel the air pressure off the cone! Bass in the boat is awesome with this sub!

Went from Infinity to Polk and never looked back!!!

Written By Joseph, Weaver, AL on Sunday, July 22, 2007

Where do I start?? Great product, great sound, easy setup, great price. This brand is just GREAT!!!! Nothing left to say. You will not be disappointed!!!

They Will Rock You

Written By Neal, Suffolk, VA on Wednesday, June 20, 2007

Crutchfield Customer Review (What's this?)

Ive been through alot of car audio equipment in the last 20 years, and I gotta say these subs are the best value for the money out there. Polk has done an excellent job with these. Rock solid bass. I have 2 of them in a type 1 enclosure in the trunk of a very nice 70 musclecar each powered by a separate eclipse xa 1000 class d mono amp, and 2 momo 6x9's w/a nice alpine amp, and alpine head unit. If you have some good clean power to really push them, you will absolutely love them. Great White never sounded better.

Polk/MOMO MM2104

Written By David, Pleasant Hill, CA on Wednesday, November 01, 2006

Crutchfield Customer Review (What's this?)

Excellent sounding sub and a great value. Put one of these in a qlogic box for my 04 trailblazer after reading one of the customer reviews and was thoroughly impressed by the sound regardless of the music type I was listening to. Highly recommended product.

Polk/MOMO MM2104

Written By Hector, Tucson, AZ on Thursday, September 28, 2006

Just picked one up and installed it in a type 1 q-logic enclosure for a 02 Trailblazer. I was skeptical at first thinking this one 10" woofer would not sound very loud, boy was i wrong, this thing bumps! I am feeding it about 300 watts rms and it handles them perfect. I am very happy with this woofer and would highly recommend it.

tight and clean...

Written By ryan, saginaw/ Mi on Thursday, April 20, 2006

I just put this thing in my corsica in a type 1 enclosure. I listen to hip hop and rock.... great for both. i have it hooked up to an overpowering p4002(400rms by 1) and it handles it. It gives you that nice kick and SLAM for rock. Love this sub. WOOONDERFUL buy.

Polk/MOMO MM2104

Written By Dr Dirty, New York on Thursday, April 06, 2006

So I had a pair of the original 10" Polk MoMos for over six years... And they survived my abuse and put out heart stopping base each and every day until physically damaged one of them with something I had in the trunk... In a hasty attempt to get my bass back I tried to replace my subs with some Alpine type R's and they were just WEAK & UGLY and got sent back the same day... So I decided to be patient and ordered the new MoMos, and trust me at this price point they are a steal they pound so hard and clean... this new version of the MoMo sub is a more efficient than the previous one, it is much lighter in total weight and in cost (the old ones retailed at over $400 each!!)... Like I said they sound great, I just hope that they are as robust and can handle the long extended abuse I gave the old pair b/c the materials used for this newer woofer are not as rugged and tough... Also the old pair had a great looking style so I had to get the optional wheel-like grilles to step up the aesthetic appeal... I would highly recommend these subs, very high quality from Polk-MoMo

Tight and clean

Written By Jerry, Youngsville, LA on Tuesday, January 31, 2006

Crutchfield Customer Review (What's this?)

I finally got the money to have this put in my 02 Silverado.

I love this sub! I can feel the kick drum (I listen mainly to metal music) in my chest. It feels like I have a boom truck but when you get out and close the doors, you hear nothing!

Tight Clean Bass

Written By Steven S, Bend, Or on Tuesday, January 10, 2006

let this sub break in a little then turn it up a little more and enjoy some hard hitting clean bass.

Hands-on research

What's in the box?

Download owner's manual

  • One 10" subwoofer
  • 1 Rubber gasket (installed)
  • 8 Allen head self-tapping screws
  • Owner's Manual
  • Online registration sheet

Product Research

Enclosure Compatibility
Box Correction
Cutout Diameter Correction


Dynamic Balance: Dynamic Balance is a proprietary Polk Audio technology using laser imaging to determine what combination of speaker materials create the least amount of resonance. Eliminating resonance in speakers results in a wide, smooth response and low distortion.

Marine Certified: Polk/MOMO Series speakers are built to withstand exposure to moisture and UV rays, so they work well in boats and cars.

Metalized Polypropylene Woofer Cone: This woofer features an ultra-stiff metalized polypropylene Dynamic Balance cone for massive bass. Its Dish Cone design is mechanically supported by a unique Vented Cone Coupler. This support increases the sub's axial rigidity. 

Rubber Surround: The cone uses a durable, airtight rubber surround for a long life of extended linear motion.

Stamped Steel Basket: The acoustically inert stamped steel basket offers lower distortion.

NOMEX Spider: The huge, fire-retardant flat NOMEX spider allows extended linear motion while providing highly reliable mechanical and thermal stability.

Klippel Measurement Technology: State-of-the-art laser-based Klippel measurement technology perfectly centers the subwoofer's voice coil in the magnetic field, improving X-max and BL linearity, and the sub's micro and macro dynamics, for deep, precise bass.

Triple Vented: The vented coil/cone coupler, vented spider platform, and vented pole piece all allow cooling air to freely flow over the heat-generating components and better harness all the watts your amp can dish out.

Rubber Magnet Boot: The removable rubber magnet boot provides additional damping and deeper installation flexibility. With the magnet boot removed, the woofer has the following dimensions:

  • Magnet Diameter: 5.528"
  • Depth as top: 5.379"
  • Depth as bottom: 5.843"
Terminals: The woofer has professional grade nickel-plated push terminals that will accept bare wire and pin connectors.

Enclosure Compatibility

Recommended Sealed Box Volume: Polk recommends using this woofer in a sealed enclosure with an internal volume of 0.66 cu/ft.

Box Correction

Power Handling: The box incorrectly states that the woofer can handle up to 125 watts RMS and 300 watts peak. In fact, the woofer can handle up to 300 watts RMS and 600 watts peak.

Cutout Diameter Correction

Cutout Diameter Correction: Page 7 of the manuals included with the initial production runs of this woofer lists incorrect cutout diameter specifications; mounting holes cut using the specifications on page 7 will be too large for the woofers. The correct cutout specifications are listed on page 10 of the manual; on page 10, the cutout diameter is called "Mounting diameter".

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.