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Polk Audio MM651UM Special Edition Black

6.5" 2-Way Ultra Car/Marine/Motorsports Marine Certified Mobile Monitor MM Series Coaxial Speakers (OEM Bulk Pack)

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List price $279.95

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$109.00

with warranty A Pair

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Polk Audio MM651UM Special Edition Black

6.5" 2-Way Ultra Car/Marine/Motorsports Marine Certified Mobile Monitor MM Series Coaxial Speakers (OEM Bulk Pack)

$109.00

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NVX 25 ft. of True Spec 12 Gauge Speaker Wire

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Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

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NVX SDDK12 Door Kit

Eliminates speaker panel distortion and reduces door vibration, rattles and squeaks!

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Will fit most 6x9" and 5x7"/6x8" locations,
with appropriate speaker adapter. Click "Related Items" Tab.

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MM Series Superior Performance

The Mobile Monitor Series by Polk Audio is the result of 3 years of research and development. The series uses high quality materials and the newest loudspeaker technology to bring the listener an unforgettable experience. The best part about the MM Series is the affordable price.



What does Marine Certified mean?

The MM Series speakers get put through the ASTM (American Society for Testing and Materials) marine testing to become marine certified. The speakers go through two harsh tests: the B117-03 Standard Practice for Operating Salt Spray (Fog) Apparatus and the D4329-99 Standard Practice for Fluorescent UV Exposure of Plastics. The Salt Fog tests exposes the components 95° Fahrenheit and 5% salt solution for 500 hours and the UV test puts the speakers through 8 hours of UV-B light, black body temperature of 60 degrees Celsius and 4 hours condensate water, black body temperature of 40 degrees Celsius. These tests ensure these speakers will last in the harshest of marine environments.



General Features

  • 6-1/2" Ultra Marine Mobile Monitor MM Series 2-Way Marine Certified Speakers
  • Power Handling:
    • Peak: 400 watts per pair / 200 watts each
    • RMS: 200 watts per pair / 100 watts each
  • Recommended power range: 15 - 110 Watts RMS per channel
  • Woven glass composite cone woofer
  • Butyl rubber surround
  • 1" Soft dome weather resistant dynamic balance tweeter
  • Completely sealed speakers for marine use
  • Built-on grille
  • Sealed crossover assembly is built into the back of the magnet
  • Klippel distortion analyzer
  • 3 ohms impedance
  • 1-3/8" (30mm) Large diameter voice coil
  • Neodymium magnet structure
  • Salt, fog and UV Resistant
  • Top-mount depth: 2-5/8"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Priced Per Pair

Note: These speakers are in Brand New Condition. Ships in generic brown box, not Polk Audio beauty box.



Product History:

Polk Audio MM651UM-Black thumbnail
(newest, current model)
Polk Audio MM651UM thumbnail
(previous model, replaced by Polk Audio MM651UM Special Edition Black)

Speaker Specifications

Series
This is the manufacturer product line of speakers.
MM / Mobile Monitor (Polk)
Priced Per
Car Speakers are typically sold in pairs so you will receive 2 speakers for each speaker purchase on speakers marked "Priced Per Pair". If a speaker is marked "Priced Per Each" then the speaker is sold individually and each purchase you make will result in 1 speaker. High-powered tweeters, midrange and full-range pro audio for car speakers are typically sold per each speaker.
Pair
Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
6-1/2"
Design
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
2-way
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
Dome
Tweeter Composition
Materials such as polypropylene, silk, cloth, and paper are the most common, where as many more recent tweeters are now manufactured with composites such as Aluminum, Titanium, Mylar, and other materials.

PEI is an acronym for "Polyetherimide" which is an amorphous, amber transparent, high-performance thermoplastic.

Silk-Polymer Composite
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Woven Glass Fiber
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Butyl Rubber
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
200 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
100 watts
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
 
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
92 dB
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
40 - 25000 Hz
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
3 ohms
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

Yes
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
2-5/8"
Bottom-Mount Depth
The depth when installed from the bottom of the mounting surface. Measured from the bottom of the speaker's magnet to the top of the mounting holes on the rim of the speaker.
2-7/8"
Cutout Dimensions
Refers to the dimensions of the hole, measured in inches or millimeters, required to contain the speaker.
5-1/16 x 5-1/16 
Speaker Grilles
A grating or screen of metal or plastic bars or wires, mounted in front of a speaker as protection. If yes, the speakers will include matching speaker grilles. If no, there are no grilles included.
Yes
Number of Speakers
This is the number of speaker that is included in the package. Each purchase will result in receiving the number of speakers indicated here. Please note that some items will have multiple woofers in the same enclosure. For sets of component speakers, this number will refer to the number of sets of speakers (For example, 2 would indicate the purchase includes 2 woofers and 2 tweeters).

Please refer to the product image and description for further details about the speaker.

2

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
83%
4 Star
17%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.8
Value
4.9
Features
4.8
Design
4.8
Usability
4.8
ozi

Australia

Overall
Durability
Value
Features
Design
Usability
Great Value!

October 22, 2016

Good speakers that live up to their reputation yah yah

0 of 0 found this helpful

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DSS

Oronoco, MN

Overall
Durability
Value
Features
Design
Usability
Great speakers!

October 7, 2016

These were a direct replacement for a damaged speaker in my boat and everything mounted and connected properly.
Great sound for the price.

0 of 0 found this helpful

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Erik

Durham, NC

Overall
Durability
Value
Features
Design
Usability
Unbelievably clear, and can take a beating like Tina Turner

September 19, 2016

I upgraded my pontoon boat from two very underpowered and very unclear speakers to 8 of the Polk 6.5". I've been on the lake now five or six times and I've had more people ask what audio system I'm running in that boat. Polk has been very consistent in their products that I have purchased. I'm very happy and would definitely buy more if my boat had more room! The speakers are unbelievably clear and sharp. they do not have a tiney sound and I cannot seem to max out the power to distort them. I wish I had these in my vehicles too!!

0 of 0 found this helpful

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Erik

Durham, NC

Overall
Durability
Value
Features
Design
Usability
Unbelievably clear, and can take a beating like Tina Turner

September 19, 2016

I upgraded my pontoon boat from two very underpowered and very unclear speakers to 8 of the Polk 6.5". I've been on the lake now five or six times and I've had more people ask what audio system I'm running in that boat. Polk has been very consistent in their products that I have purchased. I'm very happy and would definitely buy more if my boat had more room! The speakers are unbelievably clear and sharp. they do not have a tiney sound and I cannot seem to max out the power to distort them. I wish I had these in my vehicles too!!

0 of 0 found this helpful

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HOLLYWOOD

Catawba, OH

Overall
Durability
Value
Features
Design
Usability
Polk review

August 26, 2016

Highly recommend these speakers. They sound great and if you consider the price, they are one of the better deals on the market.

0 of 0 found this helpful

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Killabeez

Las Vegas

Overall
Durability
Value
Features
Design
Usability
Polk speakers

August 25, 2016

I purchased the Polk Audio speakers for my boat and i wished i had ordered another pair because they sound Great!!

0 of 0 found this helpful

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[email protected]

Hollywood, FL

Verified Purchase
Overall
Durability
Value
Features
Design
Usability
Could not ask for more

August 18, 2016

Great speakers all around... not sure about durability since I have only had themy for a month or so.

0 of 0 found this helpful

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Mr. Breeze

North Alabama

Overall
Durability
Value
Features
Design
Usability
Replacement

August 14, 2016

I"m a Polk fan and the price for these was just right. Direct replacement on our Tahoe Q7. Sound outstanding.!.

0 of 0 found this helpful

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rayburn

texas

Overall
Durability
Value
Features
Design
Usability
great sound - great look

August 8, 2016

we purchased 2 speakers for our boat and were so pleased with sound that we bought two more!

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DH

Lake St. Louis, MO

Overall
Durability
Value
Features
Design
Usability
Audiophile Grade Speakers

July 11, 2016

These Polk MM651UM sound great in the boat. Crystal clear sound, no distortion, great sound range. I would recommend using an amp for these speakers in order to get the full potential.

I paired them with the Sony MEX-M100 BT head unit. Very pleased with this set up so far.

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Robert Snow

Vacaville, CA

Overall
Durability
Value
Features
Design
Usability
Good bang for your buck

June 22, 2016

I purchased these for my yxz1000r and put them in the speaker pods by my feet. Had to modify the boxes Slightly to make them fit, because of the sealed crossover on the back of the speakers, but I was definitely impressed with how loud and clear that are even at 70mph
Definitely worth the money I spent on them

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ERIC

forest hill, MD

Verified Purchase
Overall
Durability
Value
Features
Design
Usability
Polk lives up to the hype!

May 17, 2016

I replaced a set of Clarion 1625's in the cockpit of my 340 Sea ray Sundancer. The sound quality was immediately noticeable. The highs are much clearer and it has a decent mid bass. For the price these 6.5's cant be beat. Polk really has lived up to the hype on this little speaker. You wont be disappointed in this purchase. I only gave 4 stars for looks because I was looking for a white speaker grille but the black that I purchased matches my canvas so now that they are mounted up they actually look much better then I thought they would.

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Accessory Tools and Products

Accessories added

NVX 25 ft. of True Spec 12 Gauge Speaker Wire

100% OFC wire with EnvyFlex metallic jacket insulates and protects against damage from extreme conditions.

Your Price $39.99

Streetwires 25 ft. of True Spec 12 Gauge Speaker Wire

You need speaker wire to connect your speakers!

Your Price $37.85

Belva 23 ft. of True Spec 12 Gauge Speaker Wire

100% Copper Clad Aluminum, high strand count with ultra-flexible PVC blended jacket for easy installation

Your Price $14.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $18.99

NVX XTGSP2 Tone Generator and Speaker Polarity Tester

Perfect for safely troubleshooting and testing audio systems

Your Price $29.99

Universal Wire Puller & Grabber

Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!

Your Price $7.99

Encore Universal Four Door Power Door Lock Kit

Add Power Door Locking and Unlocking while you have the Door Panels removed

Your Price $29.99

NVX SDDK12 Door Kit

Eliminates speaker panel distortion and reduces door vibration, rattles and squeaks!

Your Price $47.99

Dynamat Xtreme Door Kit 10435

Enough sound dampening to cover most doors!

Your Price $60.97

Stinger Roadkill Door Kit

Use this to eliminate rattle from your doors!

Your Price $39.95

NVX Sound Dampening Rubber Roller

Install your Sound Dampening with ease using this heavy duty rubber roller!

Your Price $7.99

Speaker Baffles for your Speakers

Enhance the sound of your speakers with these easy to install speaker baffles.

Your Price $9.99

XTC 6-1/2" Round Large Frame, Shallow Foam Speaker Baffles

Creates a tight seal behind speaker for enhanced audio quality.

Your Price $13.84

12-10 AWG Butt Connectors

These yellow butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers.

Your Price $5.99

12-10 AWG Quick Disconnect Connectors

These yellow quick disconnect connectors make it easy to connect and disconnect speaker wire your to your new aftermarket speakers!

Your Price $11.99

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Browse 7 questions and 22 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
My research says these put out a real good bass.
Most 6.5" lack that.
Price is the best online !!
Putting them in my 2012 Kawasaki Vaquero.
Marine Quality !!
Patrick P on Oct 27, 2016
Several reviews i read chose these as number one out of the top 10
steven c on Oct 21, 2016
After plenty of research these appear to be the best bang for the buck in terms of power, clarity/quality and reliability over the long run.
roger r on Oct 25, 2016
Reviews
vernon R on Oct 6, 2016
Is there a recommended break in period for these speakers?
Kevin G on Sep 26, 2016
Best Answer: I plugged them right in without necessarily "breaking them in."

Just make sure you know these are 3ohm nominal.

I'm having to run them at 6ohms because of that mistake.
Reply · Report · Alexander P on Sep 27, 2016
· Add Answer · I Have This Question Too (1)
are these refurbished speakers or brand new?
diane b on Nov 28, 2016
Best Answer: These speakers are new. Just bought my second and third pair. Researched several sites for the best marine speakers of 2015 when i purchased my first pair, and polk mm651um kept coming up. Speakers are awesome in my ice chest cooler and making another for my college kid.
Reply · Report · Daniel C on Nov 28, 2016
· Add Answer · I Have This Question Too (0)
Will these fit in a newer Harley Road Glide under the front Grill? 2015 to 2017?
Timothy M on Nov 16, 2016
Best Answer: I had put these in my boat. Which had 6.5" speakers originally. I had to enlarge the cut out with a dremel tool to get the bigger magnet to fit. Check your depth as well.
Reply · Report · Todd M on Nov 16, 2016
· Add Answer · I Have This Question Too (0)
are you able to remove the tweeters and mount them seperately on the polk mm651UM special edition with the black grille?
A shopper on May 18, 2016
Best Answer: no
Reply · Report · daniel f on May 20, 2016
· Add Answer · I Have This Question Too (0)
will they fit a 2012 harley davidson road glide?
Tommy D on Nov 29, 2016
· Add Answer · I Have This Question Too (0)
grill dimention please?
daniel f on Apr 27, 2016
· Add Answer · I Have This Question Too (0)

Product Summary

Manufacturer

Model Number

MM651UM-Black

UPC

747192114510

Weight

6.00lbs

Internal SKU

mm651um-oeblack

Internal Product ID

112435

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Polk Audio MM651UM Special Edition Black

  • Polk Audio Mobile Monitor Series Speakers | Product Overview
  • How To Test Speaker Polarity | Tips & Demo | Car Audio 101
  • Replace your Car Speakers and Upgrade to Better Sound | Sonic Electronix