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Polk Audio MM6501

6-3/4" component speaker system — also fits 6-1/2" openings

34 Reviews | 1 question - 1 answer

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Our take on the Polk Audio MM6501

Polk Audio continues its tradition of making brilliant-sounding speakers in stylishly designed packages — their Mobile Monitor (MM) Series speakers look great and sound even better. Each speaker utilizes an extra-strong, extra-small neodymium magnet that saves space and weight, allowing these speakers to fit into more places in more vehicles while still delivering a full sound with lots of kick. Their lightweight carbon composite frames provide strong, flex-free support for the speakers' motor assemblies.

Polk Audio continues its tradition of making brilliant-sounding speakers in stylishly designed packages — their Mobile Monitor (MM) Series speakers look great and sound even better. Each speaker utilizes an extra-strong, extra-small neodymium magnet that saves space and weight, allowing these speakers to fit into more places in more vehicles while still delivering a full sound with lots of kick. Their lightweight carbon composite frames provide strong, flex-free support for the speakers' motor assemblies.

The Polk MM6501 6-3/4" component system features 6-3/4" woofers with honeycomb-textured woven glass fiber composite cones that respond very quickly for a clean, crisp, and powerful sound. Large voice coils — over an inch in diameter — give the speaker high power handling capability and extended reliability.

Separate 1" silk dome tweeters add a sweet high end that blends perfectly with the low notes, and swivel mounts let you aim the tweeters to produce a superior sound stage in your car. The external crossovers direct the signal flow so all your music stays in perfect harmonic balance, from the electric bass all the way up to the cymbals. A tweeter attenuation setting allows you to tweak the high-frequency level to your taste.

Important Note: These Polk speakers use a low-impedance design to pull more power safely from your car stereo or amplifier. This design is compatible with virtually all factory and aftermarket stereos.

Note: Polk describes this model as a 6-1/2" speaker. Most manufacturers designate this same frame size as a 6-3/4" speaker. For simplicity's sake we list it as a 6-3/4" speaker.

Product Highlights:

  • component speaker system includes two 6-3/4" woofers, 2 tweeters, and two external crossovers
  • woven honeycomb glass fiber composite woofer cone with butyl rubber surround
  • 1" silk composite dome tweeter with swivel mount
  • 2-way external crossover with 2-position tweeter level
  • certified for marine use
  • 2.7-ohm impedance for extra power (compatible with virtually all factory or aftermarket car stereos)
  • power range: 25-125 watts RMS (250 watts peak power)
  • frequency response: 40-25,000 Hz
  • sensitivity: 94 dB
  • includes adapter rings for 6-1/2" openings
  • top-mount depth: 2-9/16"
  • warranty: 1 year
  • Our 60-day money-back guarantee

Great sound quality, crisp and clear.

Al, Torrance, CA

What's in the Box:

  • Two 2-way 6.75" Woofers
  • 2 Grilles
  • 2 Mounting ring adapters (includes GM/Chrysler 6-3/4G)
  • 2 Tweeters (each tweeter has attached 18" speaker leads)
  • 2 Flush-mount cups with 2 metal flush-mount clamps attached
  • 2 Surface-mount cups
  • 2 Crossovers
  • Four 39" lengths of speaker wire (each length of wire has female quick-slides on one end and tinned wire on the other end)
  • 10 Self-tapping phillips-head screws
  • 8 Speed clips
  • 8 Self-tapping hex-head screws
  • Owner's Manual (Eng/Span/Fren/Ger/Ita/Port)
  • Online registration sheet

Polk Audio MM6501 Reviews

Average Customer Review(s):

(34 Reviews)

96 Chevy K1500 truck

Al from Torrance, CA on 3/12/2017

Crutchfield Customer Review (What's this?)

Great sound quality, crisp and clear.

Pros: Easy to install. They hold up great when pushed by an amp

Cons: None

Polk Audio MM6501

Anonymous from Issaquah, WA. on 12/13/2016

2012 Volkswagen Tiguan
Crutchfield Customer Review (What's this?)

Solid construction, great sound



Polk Audio MM6501

Anonymous from Bar Harbor, ME on 12/11/2016

2013 Honda CRV
Crutchfield Customer Review (What's this?)

Haven't tried them yet but I've heard they are good



Awesome Speakers

Charles from York, PA on 9/18/2016

2011 Chevrolet Cruze
Crutchfield Customer Review (What's this?)

As always Polk makes amazing speakers. After installing these speakers they had amazing sound and fit perfectly into my Cruze. I did though have to custom mount the tweeters, but that wasn't an issue.



Excellen Fit for a Toyota Tacoma

Brian from Northborough, MA on 8/6/2016

2010 Toyota Tacoma
Crutchfield Customer Review (What's this?)

These speakers are excellent in my Tacoma. I am hunting down vibrations and rattles now because they pack so much punch. I have them paired with an alpine ktp-445u power pack amp, bridged to 90rms per channel and they are screaming for more power. They clip at around 30 (out of 35) on my Kenwood head unit. I get everything I need out of this but I can imagine you can really throw a lot of wattage at these speakers. They are very solid. They sound great.

Pros: Solid, quality speakers. Package contains everything you need for an install.

Cons: They scream for more power...

Excellent speakers, Crutchfield's fitment guide is wrong

Mark from Milwaukee, WI on 7/13/2016

2004 Pontiac Grand Prix
Crutchfield Customer Review (What's this?)

These speakers are excellent! I've got the mm6501's in my front doors and the mm691's in the rear powered by a Polk PAD4000.4 amp with a pioneer 4100NEX receiver in the dash and I've never heard such great music in any other car. I've got the amp gain set at 4 volts, crossovers off, with the speakers crossovers set at 0 and the 13 band EQ in my receiver all set flat except the 60 and 100hz sliders at -6db, and my sub amps also set to 4 volt gains, low pass crossovers at 100hz and bass boost at +6db to compensate for the EQ being turned down to -6 for the mm speakers. My system hits and is loud and clear. I love it! BTW for bass I'm running 2 alpine mrv-m500s pushing on 2 alpine 12in sws-12d2 subs. Subs are wired for 1ohm and each amp is 1 ohm stable at 500 watts rms.. the subs sound great and hit hard if I turn the level up on my receiver to 0, normally it's at -4.. I truly believe I've got the perfect system.. Now About Crutchfield's Fitment Guide, the tweeters were the easiest to install using the surface mount cups and popping the metal screen off the door panel that covered the stock tweeters, it comes off easy and can be reused if going back to stock, the crossovers fit right next to the power mirror wires where they go thru to the mirrors but I had to leave the covers off. The woofer, oh my! Suppose to drop right in but no way! I had to dremal the plastic around each speaker between the 4 screw holes, I Better have a warranty still

Pros: Everything about these speakers and polk in general! These replaced dxi6501's and dxi691's I previously put in the car. The dxi speakers sound pretty good but they are more for a lower powered amp or no amp although the pad4000.4 did have em sounding good, but these mobile monitors are way better! Hands down, if your buying polk and your going to use a good amp with 125 watts rms X4 then you need to get these!

Cons: Nothing with the speakers, but Crutchfield's fitment guide has been wrong on 2 of my cars so far. The dxi6501 and dxi691's are a drop in replacement in a 2004 grandprix... the mm691 fit fine in my car, but unless Crutchfield starts shipping a adapter bracket with the mm6501 speakers when a 2004 grand prix is selected as the car, they will not drop in without modifying the woofer, but the tweeter and crossovers on both systems fit fine and are darn near drop ins.

Crutchfield response on 7/20/2016 Wayne, one of our tech support Advisors, reached out to Mark to discuss the fit issues he mentioned. And thanks to Mark's review, Wayne is following up with Crutchfield's vehicle research team to verify our information with the fit of the Polk speakers.


Daryl m from Bakersfield ca on 6/13/2016

Crutchfield Customer Review (What's this?)

I've read a lot of hype on these speakersites and decided to give in and spend the money to purchase them and after installing them I was very disappointed in the sound output and power handling capacity so I then remover them and put them on a test bench to hear them outside and they sounded good so I came to the conclusion that the sealed enclosure that they were in was not big enough to allow the speakers to work properly so for me I just think it was an application failure not the speakers

Pros: Light Good sound in a larger area Goodlooking speaker

Cons: Powerhandling seemed lower than rating Does not do well in small sealed inclosure

Honest review of MM6501 and Polk in general

Neil from Atlanta on 6/3/2013

The MM6501's are my 3rd set of component speakers from Polk. My first set were the db series and were great. My second set died for no apparent reason and was replaced under warranty, the replacement set died in the exact same fashion with the woofer not responding unless you put pressure on the center of the cone. There are other instances of this if you google. This would be my last go for Polk car audio. I purchased the MM6501's and I was disappointed, not for quality of output but for build. I ran these off the same amp I have used for all the other Polk sets, an Alpine PDX 150.2 which has a regulated power supply for 4ohm or 2ohm speakers so the same amount of power is received. I hooked these up and had the gain at 0 that's ZERO and my head unit at about 31 out of 40 on volume. The crossovers got so hot that they literally melted, there are no shorts, or metal contact issues what so ever. If you swap out the crossover with another, no issues. I told myself if there were any issues after this, I wouldn't buy Polk any longer. Sound quality has always been awesome from this company, build quality is not. I suppose, JL, Focal, or other higher end companies will get my business. It was never about the cost, honestly, I always was a fan of the SQ that came out of their car audio line/home audio. I normally do not review items except the ones I feel are of great quality/value or that just suck so bad that I lose sleep. 3/4 sets of polk speakers were bad, no more

Pros: Great sound quality, "claimed" high power handling.

Cons: Build quality, crossover started smoking literally, and melted the plastic.

Very Satisfied

Anonymous from Clinton, MD on 5/31/2012

Crutchfield Customer Review (What's this?)

Overall this compenent set is great if the person wants piercing highs and good mid range. If bass is what you want DO NOT BUY THESE unless u have a subwoofer installed like I do.

Pros: Tweeters are easy to install in factory location in most cars

Cons: woofer could produce lows a little more accurate, this could also be because of the material actually.

Good Sound - Seperate Tweet Wiring Weak

James J from Fresno, CA on 4/2/2012

2011 Jaguar XK
Crutchfield Customer Review (What's this?)

Replaced my front Bowers Wilkins speakers with these in my 2011 XK Jaguar. They sounded very tight and lacking a bit of bass comparatively but then again I was looking to add some highs and overall clarity to the system. The existing bass woffer does cover in the low low frequencies but all in all they do sound very clear. I will say, however, that the tweeter and existing wires which are included must be handled with some care. Out of the box and a couple of mounting options explored and the wires came right off their soldering points. Quite annoyed and might just send them back due to this as resoldering does seem a bit delicate as the contacts are very close together. All in all, good speaker. If you are looking for a cheaper option the MM651 are just as good and the DB651 both sound good as well.

Pros: Good volume and clarity

Cons: Tweeter wires and solder points are delicate and can detach easily. The crossover box is a bit larger than other versions but does add variability in tweeter DB adjustment.

No bass

RobertG from Stapleton, GA on 3/27/2012

2007 Dodge Ram 2500
Crutchfield Customer Review (What's this?)

I installed these speakers in my 2007 Dodge Ram 2500 mega-cab. Speakers have decent sound but very little base. I have a pioneer NAV unit powering these speakers and no amp but unit alone is capable of overpowering speakers. Will probably be looking for something that can handle more power in the near future.

Pros: Good sound quality

Cons: No bass, speakers can't handle minimal power.

Amazingly Clear Sound 2005 Silverado1500 Reg Cab

Arcamedies from Oklahoma on 3/16/2012

2005 Chevrolet Silverado 1500
Crutchfield Customer Review (What's this?)

I just recently purchased these speakers to replace the sound in my 05' Chevy Silverado1500 Reg Cab. I've had many speakers in all of the cars I have owned and I knew there was going to be a sizeable difference but I had no idea how crisp and clean these speakers were going to be. I had the component speakers mounted next to the windshield facing the glass and the 6 1/2 in the stock speaker holes in the door. The sound is amazing inside the cab, I only have sound dampening material in the doors for now but I will be adding it to the roof also. These speakers cover the highs and mids extreamly well and the low end bass is not bad at all but being a bass junkie i could use a little more bass from these. But in a month I'll be adding a 10" Polk sub and Amp and I'll have all the bass I want. Buy these speakers! at Crutchfields current price you cant go wrong...

Pros: Clean, crisp sound from the component speakers and excellent mids from the 6 1/2's. These speakers will compilment a sub very well with the perfect range of sound!

Cons: Wish the 6 1/2's had just a little more low end bass. But hey, thats what subs are for... I'm still very happy with my purchase and the clean sound!

Buyer Beware!

Erik from Johnson City, TN on 3/11/2012

Crutchfield Customer Review (What's this?)

After listening to these in the Charlottesville showroom and doing a good bit of research I bought a pair and would have given them 5 stars once tuned. Three weeks later I bought a second pair. A few months later a crossover went bad, I replaced it with an Infinity crossover while waiting for a warranty replacement and the time to do the work. A couple of months later I started noticing an irritating bass induced buzz from 2 of the other woofers, so last weekend I finally made time to replace the crossover and check the buzz. Three out of 4 woofers had torn surrounds! The only one not messed up is the one with the Infinity crossover. High pass is set a little above 100 at the amps, I don't push a lot of bass, and never exceeded 3/4 gain or 3/4 volume. Running a pair of Boston Acoustic 80 x 2 amps. Also, the replacement crossover broke on install. Crutchfield sent me 1 replacement pair and said I'm out of luck from here on out with these. Just over a year and $500 dollars and I've still got 1 torn woofer surround and I'm sure it's only a matter of time till the other woofers and the crossovers go. Furthermore the tweeter mounts are terrible - they need to use a threaded mount like most quality brands. I'll still shop at Crutchfield, they're generally great to work with, but I might get the Alpines to replace these elsewhere on general principle and I will not buy Polk anything again.

Pros: Sound quality when tuned properly and working.

Cons: Build quality is consistently poor. Tweeter needs different mount.

Long time Polk fan.

Rick from Stamford, CT on 2/2/2012

2002 BMW 3 Series
Crutchfield Customer Review (What's this?)

I am using only the woofers for mid-bass on the rear deck. I am running them off of Alpine Flagship SPX-17MB Type-X crossovers using the mid-bass settings. Perfect for the application and they handle all the power I can give them. They required a small amount of trimming on the fames to fit, however most brands would need the same.

Pros: Very good power handling capability.

Cons: Crossovers need to be more flexible.

Rate it a 4 out of the box and a 7.5 after tuning

Derek from HI on 1/21/2012

2006 Nissan 350Z
Crutchfield Customer Review (What's this?)

I bought these for what I thought was a good deal after my MB Quarts tweeters blew out. I installed the speakers in the stock locations of my 350z, and it is powered by a Pioneer MVH-8200BT head unit and a 100+ watts @ 2.7 ohms amp with 16ga speaker wire to all 4 speakers. After the installation, the speakers sounded terrible, almost unbearable to listen to especially with the higher female voices and beats. There was a severe peak between frequencies 2.5khz and 6khz and also a dip around 500hz and 10khz+. I assume that the frequency dips at 500hz and 10k were due to the speaker locations, but I would have to say that the severe peak around 4khz was caused by a cheap crossover (which is my biggest complaint about this set). The components in the crossover seemed to be held together by a ton of glue, there was no bi-amp capabilities, and it seems like the engineers didnt properly transition between the tweeer & woofer. After 6+ hours of trying to tune my system with the deck's 7-band EQ, i wasnt able to get it to sound right. So finally, I decided to bi-amp the speakers and use my amp's built-in low-pass crossover to cross over the woofer at 2.2khz @ 24db slope and use the stock crossover for the tweeters (crossover frequency unknown). This workaround solution seemed to eliminate the peak @ 4khz. After all of this tuning, I am satisfied but not completely happy with the sound. I rate it a 7.5 out of 10 (after much tuning).

Pros: Good midbass Lively mids and highs 2.7 ohm set-up may be good for those who have 2-channel amp comes with an extension for the tweeter wire

Cons: Crossover construction No Bi-amping capabilities Stock sound is terrible Found out that you can't mount the speakers co-axially as the pictures and woofer grill seem to suggest Not worth MSRP

Low Impedance Speakers

Ro_bert from Sunnyvale, CA on 1/20/2012

They are 2 Ohm. My headunit cannot drive them, gets instable at high levels, although Crutchfield recommended them for my car. I agree an external amplifier is the better solution (at least until I sell the car), but even then 4 Ohm would have been better - less issues with thin stock cables, and higher amplifier efficiency. The sound is great, no complaints there. They also measure flat.



Amazing Components That Rival Others Costing Much More

Chris from Columbus, OH on 10/23/2011

Amazing sound quality. I've went all out with the my system. I am running these components active with an Audison Bit Ten Processor with 100W going to the woofers alone. These are very efficient and have tons of clean midbass. These speakers can be run full range if you need to and will hit sub frequencies with punch. I have mine crossed at 60Hz because I have a sub and are very good at helping to keep the bass upfront. Clean and clear midrange, and tweeters are extremely smooth.

Pros: Amazing sound quality for the price, huge upgrade when compared to cheaper db line.

Cons: Tweeters sound better crossed at 4kHz, factory crossovers use 3.2kHz.

Great quality!

SethS from Billings, MT on 10/6/2011

Crutchfield Customer Review (What's this?)

It took a little bit to install these into my 2010 Mazda 3. But that's not polk audio's fault, that's Mazda. Other than that the speakers sound amazing with my Jensen 5500 amp. The tweeters put out great, even too great with the crossover set at 3 db. The woofers themselves handle bass extremely well (even the lows). They were actually shaking my doors without any break in quality. 5 stars all the way.




Jason from Riner, VA on 10/2/2011

2002 Ford Mustang
Crutchfield Customer Review (What's this?)

Bought 2 sets of these for my 2002 Mustang GT convertible. Here and Polks website says they dont fit but... they did. Just need a adapter ring for front doors to make the 5x7 hole to 6 1/2. These speakers are the real deal! Tweeters give you all you need but not to :"bright". Midbass is awesome.



Polk MM

Redwings from Broken Arrow, OK on 9/20/2011

2000 Jeep Wrangler
Crutchfield Customer Review (What's this?)

Installed the MM series component in my 2000 Jeep Wrangler w/Q-panels, have the DB series in my soundbar. I would recommend spending the extra for the MM series, they sound great, more robust than the DB serires & are marine rated.



Put an Amp to em!

Cory from San Antonio Tx on 8/7/2011

Don't get me wrong,these guys sound great off a quality HU, But after hooking up a Blaupunkt 4 Channel amp to them,OMG WHAT A DIFFERENCE.I also have the MM 5x7 plates in my rear doors and make a great set-up.With the amp installed the Bass comes alive with the Polks,Don't even have my Sub yet and they hear me 3 cars away. :) Don't look around anymore,just buy them,you will be pleased!



Polk has great sound

Ryan from Harrisburg PA on 7/7/2011

I had the polk db's in my 2000 blazer and I got a 97 4runner and had spots for tweeters so I decided to upgrade a bit. These speakers sound great even better than the db's. Polk is my favorite speaker company by far and sound amazing with my 10" polk sr sub, if you have the cash to buy these I would recommend them every time. Make sure if you're spending the cash to get these speakers to power them with an amp to get the best sound out of them.



Sound fantastic

Stever761 from Spicewood, TX on 6/24/2011

Installed 2 months ago in the front of my 2007 Tundra Double Cab. They were easy to install though I did opt to mount the tweeters in the door sails instead of the dash which required cutting holes in the sail panel plastic. They sound very good. I can crank them up louder than comfortable and they still sound clear with no distortion (Kenwood Excelon DNX 6980 powered by Sound Ordinance 120W amp). The other reviews are true -these are great speakers.



Excellent clarity and punch

Michael from Annapolis on 4/17/2011

2008 Chevrolet Express
Crutchfield Customer Review (What's this?)

My past experiences with car speakers made me consider component speakers as having separate tweeters at ear level greatly increases the clarity of the highs. While I was concerned with all the extra installation required, it turned out my extra effort paid-off. Boy, these speakers really deliver. They handle my 22 watts head with ease. The only negative I found was that super-low bass frequencies roll-off a bit, but its uncertain whether its the head rolling-off or the speakers.



Buy these speakers

Craig from Great Bend Kansas on 3/10/2011

buy these speakers, installed in a 2000 S-10 powered with a Rockford Fosgate 50 watts per channel amp. these are so clear and the vocals and highs are amazing. crank up the volume and get out of the vehicle and enjoy the concert! ( these put out so much sound amplified that they sound better listening outside the vehicle!)




alex from Bozeman, MT on 11/15/2010

2007 Subaru Impreza 2.5i
Crutchfield Customer Review (What's this?)

These speakers are phenomenal. Even with the poor door locations (too close to the floor) in my Subaru, these things sound amazing. I have 125Hz and below filtered out (sub), and these things go louder than my ears can tolerate with zero distortion. Mids sound better than you could hope for with a speaker this size. You can't go wrong with these speakers, just don't run them off your head unit; that would be a huge waste.



You get what you pay for

Nathan from MA on 11/8/2010

2002 Pontiac Firebird
Crutchfield Customer Review (What's this?)

Very clear speakers I have them wired to an amp. They play very clear at a low volume and the speakers don't distort at higher volumes either.( With 70Hz High Pass) I would highly recomend these to anyone who isnt on a budget.



Polk Audio MM6501

Josh from Oklahoma on 11/2/2010

I recently replaced my stock stereo in a 1993 Suburban. I opted for these mounted in kick panels. I have a Pioneer 6200BT receiver, Alpine F300 amp (50x4), these, and two Polk MM521's in the rear doors. These speakers sound very nice, exceptionally well with classical and instrumental music. They don't have as much low to mid-range punch as I was hoping for, but I will likely add a small subwoofer to bring up the low end. Installation was relatively easy and the speakers seem to be well made. If you get these at a discounted rate (Outlet), I'd say go for it.



Wow! Total package for great sound

ChrisC from Carson City, NV on 9/19/2010

Crutchfield Customer Review (What's this?)

Exceptional sound! When the JBL speakers in my 2004 Sequoia finally quit I replaced them with premium components but the SQ was horrible (very bright) and not what my system was capable of. After hours of research, listening to Alpine and Infinity, and several calls to Crutchfield I decided on these without listening to them. What a fantastic difference! SQ is excellent; highs are clear but not too bright (crossover is set at -3) and the mids are the best I've ever heard. Very clear and hard hitting bass and mid-range. Instrumentals are amazing and vocals are unbelievable. I have these powered with a RF amp at 50 watts RMS per channel and they totally blow away the old components both in power handling and SQ. Gain is set to zero and I can max out the volume with no distortion. Two minor issues: the tweets are press fit in a basket and don't have the normal screw in the center to install without the baskets. This added about 1/4" to the diameter of the tweets and getting them to fit in the stock sails required some tinkering. The second is the the hookups are plug ins. I'd prefer screws but I'll solder them if they come loose I've had Alpine, Infinity, and Bostons in previous installs. This is my first experience with Polk and I'm true believer in these speakers. Absolutely the best I've heard. Thanks Crutchfield!



Excellent Components

abendroth from Houston, TX on 11/22/2009

2006 Jeep Grand Cherokee
Crutchfield Customer Review (What's this?)

I just installed these speakers into the rear doors of my 2006 Grand Cherokee. They are amazing. They have a very crisp, clear, and detailed sound. I am driving them with a Polk 200.4 amp. So far, I absolutely love them. They are expensive, but definitely worth it.



Best Speakers I Have Ever Owned!

Curtis from Topeka, KS on 10/2/2009

I installed these speakers in the sound-bar of my '98 Jeep Wrangler with a PA500.4 amp. They are truly beautiful with the sleek styling and color scheme. In this case however, beauty is not just grille deep. The sound reproduction quality from these speakers is literally mind-blowing! I have never owned component speakers before, but right away I can tell that these are among the best of the best. They have only been installed for 1 day, so they have a while to go before they are fully broken in. Even now, though, the bass is punchy and I'm hearing so many beats than I never knew were there! The tweeters are pretty bright for my taste which was easily solved with the -3db switch on the external crossovers. Now they are just plain perfect! If you close your eyes it almost feels as if the band is right there performing a private concert, just for you. You NEED these components, you just don't know it yet. I would recommend these speakers hands-down to anyone who is looking for a high end sound system at a very reasonable price. In fact, I was so impressed that I ordered a set of MM5251's to replace my dash speakers!



Best Value for the money

Bob from Los Angeles CA on 8/5/2009

I'm on my third set of Polk component speakers and all have not disappointed. Top build quality, excellent sound. Buy as much as you can afford. The SR versions are the ultimate and I have both the moblile monitors and the SR 6.75, they cost twice as much but they give even better sound, especially the high end tweeters, very smooth and you hear more detail. The woofers are high end as well. Install is simple, depth was not a problem for Honda CIVIC 2001, Toyota Camry 2009 or a 2006 Toyota Tacoma. I have Polks in all three.



Polk Audio MM6501

Thomas from Corpus Christi, TX on 3/27/2009

2008 Toyota Tacoma
Crutchfield Customer Review (What's this?)

I got these Polk Audio MM6501 speakers and some MM5251 speakers for my Toyota Tacoma Access Cab and they are a huge improvement over the factory speakers. I listen mainly to classic rock and these speakers sound very good and should sound even better after a break in period of a few weeks. I have a JL Audio 300/4v2 amp powering all for speakers. Take note that these speakers are 2.7 ohms so you need to make sure your amp can handle that load. I got both sets of speakers and it was well worth the price.



2008 Jeep Wrangler

Dave from PSL Florida on 2/3/2009

Put these speakers in a 2008 Jeep Wrangler. One pair in the dash, and another in the sound bar. The dash speakers sound great in the stock enclosure. Plenty of bass, and the highs are outstanding. The set that is in the sound bar sound good, but lack some of the bass that the dash enclosures have. Still an awsome speaker for the $$$




Hands-on research

Features and Specs

Speaker Size
Design 2-way
Tweeter Design 1" Soft dome
Impedance (Ohms) 2.7
Tweeter Composition Silk/Polymer composite
Woofer Composition Glass Fiber Composite
Woofer Surround Butyl Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Sensitivity (1W at 1 meter) 94
Sensitivity at 2.83 volts N/A
Frequency Response 40 - 25k Hz
Minimum RMS Wattage 25
Maximum RMS Wattage 125
Peak Power Handling (Watts) 250
Top-mount Depth (Inches) 2 9/16
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 5

Product Research



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.

Woofer Cones: Woven glass composite cones feature tremendous stiffness-to-mass ratio. Lower mass means faster transients and finer detail.

Butyl Rubber Surrounds: For a smoother response and improved durability, the woofers use butyl rubber surrounds. The airtight rubber surrounds stand up to moisture, sunlight and extreme temperatures while allowing long excursion linear motion and years of reliable use.

Neodymium Magnets: The woofer's neodymium magnets offer exceptional strength to performance ratio and is extremely lightweight.

Large Diameter Voice Coils: Large diameter, 30mm voice coils increase the woofer's reliability and power handling capacity.

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

Mounting: The woofer itself has 4 mounting holes for a standard 6-3/4" application. The supplied mounting ring has multiple mounting holes for 6-1/2" and non-standard 6-3/4" applications, allowing the speaker to fit more vehicles.

Grilles: Strong ABS plastic grilles are included. These computer optimized grilles feature a spoke-wheel design.

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. They also include stainless mounting hardware for corrosion and rust resistance.


Silk/Polymer Composite Tweeters: The 1" liquid-cooled, silk/polymer composite tweeters provide clear, detailed highs.

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

Mounting: The supplied mounting cups allow you to surface- or flush-mount the tweeters. The tweeters swivel in both housings, allowing you to adjust them for optimum imaging.

Tweeter Mounting Dimensions:

  Surface Mount Flush Mount
Mounting Height 1.015" 0.405"
Depth 0.75" (screw depth) 0.875"
Frame Diameter 2.0" 2.295"
Cutout Diameter   N/A 1.945"


2-Way Crossovers: Each outboard crossover features a 12dB/octave high-pass network for the tweeter and a 12dB/octave low-pass network for the woofer.

Tweeter Attenuation Switch: You can adjust the output of the tweeter to match a level appropriate to your vehicle or your system. On the end of crossover (opposite the terminals), the tweeter attenuation switch can be set to 0dB or -3dB.

Electronic Tweeter Protection Circuits: Each crossover has a built-in protection circuit that guards the tweeter against accidental damage from high power.

Crossover Connections: The crossover inputs and outputs are screw terminals. The crossover housing is vented, giving you a choice of hidden wire channels for easier, more professional-looking installs.

Mounting: There are two mounting holes in the base of each crossover.

Crossover Dimensions: Width = 4.265", Depth = 3.635", Height = 1.175"

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Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

It fit and meets my minimum specs [ kevin  Oct 16, 2016 ]
Weatherproof and great sounding speakers for my jeep [ jason  Oct 04, 2016 ]
Lee in tech support recommended these after listening to my needs and answering my idiot questions. He discussed 4 different options, but kept coming back to these. [ scott  Oct 02, 2016 ]
Needed marine rated components for my Jeep, throughout. The's had best mix of price and performance. [ Michael  Jul 13, 2016 ]
They sound awesome! Great clarity and separation, my son even chose these for his system. My amp shorted out and puked killing one of mine, along with fresh amps I ordered the same speakers to keep the great sound I've enjoyed. Everyone who rides in my car says they are one of the best they've heard; great match for my JL Audio 10W6v3-D4 sub. Besides ... They have my "initials" already marked in them :). MM [ Michael  May 22, 2016 ]
Polk Audio quality and longevity in the business. Great products that deliver on sound/ [ DAVID  May 07, 2016 ]
I don't know much about Polk audio, but most reviews I've seen have been very positive, and Polk seems to have really good customer support as long as the item was bought through one of their authorized dealers. [ John  Apr 23, 2016 ]

1 question already asked

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. [ Kenny  Nov 23, 2016 ]  Staff