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Polk Audio MM691

600W 6x9" 3-Way Mobile Monitor MM Series Coaxial Speakers (Marine Certified)

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• Peak Power: 600W
• RMS Power: 250W
• 1" Silk Composite Soft Dome Tweeter
• Mounting Depth: 3-3/16" • Woven Glass Composite Woofer Cone
• 2.7 Ohms Impedance
• Sensitivity: 94dB

Learn more about the mm691

Good news and a little bad...

This item has been discontinued

But you may be interested in the newest model that's available.

mm692 thumbnail

Polk Audio MM692 - MM1 Series 6x9" Coaxial Speakers

OUR PRICE: $229.00

View item

Product Highlights


• Peak Power: 600W
• RMS Power: 250W
• 1" Silk Composite Soft Dome Tweeter
• Mounting Depth: 3-3/16" • Woven Glass Composite Woofer Cone
• 2.7 Ohms Impedance
• Sensitivity: 94dB

Description


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Authorized dealer

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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.



General Features

  • 6" x 9" Mobile Monitor MM Series 3-way Marine Certified Speakers
  • Power Handling:
    • Peak: 600 watts per pair / 300 watts each
    • RMS: 250 watts per pair / 125 watts each
  • Recommended power range: 15 - 125 watts RMS per channel
  • Woven glass composite cone woofer
  • Butyl rubber surround
  • 1" Silk composite dome tweeter
  • 3/4" Super tweeter
  • 2.7 ohms impedance
  • Klippel distortion analyzer
  • 1-1/4" (30mm) Large diameter voice coil
  • Neodymium magnet structure
  • Top-mount depth: 3-3/16"
  • Grilles Included
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Priced Per Pair

Important Note: Polk Audio specifies the nominal impedance of these speakers to be 2.7 ohms. The product box states the impedance to be 4 ohms and the speaker magnet shows 2 ohms, this has been confirmed by Polk Audio to be an incorrect specification. The product manual is correct in stating the nominal impedance of the MM series of speakers to be 2.7 ohms.

Product history:

Polk Audio MM692 thumbnail
(newest, current model)
Polk Audio MM691 thumbnail
(previous model, replaced by Polk Audio MM692 - MM1 Series 6x9" Coaxial Speakers)
Polk Audio MMC690 thumbnail
(previous model, replaced by Polk Audio MM691)

Specifications & Details


Speaker Specifications
Series
Polk MM Series
Priced Per
Pair
Speaker Size
6" x 9"
Design
3-way Coaxial
Tweeter Design
Dome
Tweeter Composition
Silk
Woofer Composition
Woven Glass Fiber
Woofer Surround
Butyl Rubber
Peak Power Handling
300 watts
RMS Power Handling
125 watts
Sensitivity
94 dB
Frequency Response
30 - 25000 Hz
Impedance (Per Voice Coil)
2.7
Top-Mount Depth (Mounting Depth)
3-3/16"
Bottom-Mount Depth
3-1/2"
Cutout Dimensions
5-1/2 x 8-3/8 
Number of Speakers
2
General specifications
Speaker Grilles
Yes
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

MM691

Weight:

8.00lbs

Internal SKU:

mm691

Internal Product ID:

14715

Product and How-to Videos


Customer Ratings & Reviews



5 star
79%
4 star
21%
3 star
0%
2 star
0%
1 star
0%



Durability
4.8
Value
4.9
Features
4.8
Design
4.9
Usability
4.9

Customer Reviews

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talk about bang for your buck

hesitant at first but once i put them next to my type x pros i was relieved. Not only can the keep up but they can outdo them and the price is definitely a nice perk too.

By iceman on March 27, 2010

65

found this helpful.

I think I'm gonna need a bigger AMP

Replaced 2 Sony Xplod with these and wow what a difference.. these Monsters hits hard.. Now I get a nice clean mid bass and the highs are very clear..

I have a Clarion EQ hooked up to my Pioneer gm6400 just for the 6x9 and I had to turn all the levels back to 0. Unfortunately my amp is only 75w rms at 2ohms x 4 (2channels bridged for a 10" sub) so I have to upgrade my Amp since I cant crank up the volume..My rear deck now rattles so it now its also a Dynamat project..

These speakers brought out things I have not experienced before with my Sonys good and bad ;)
Definitely recommend these speakers to anyone but be aware the thin metal on the rear deck will shake so please use sound deadening material.
By the way C********** stated these won't fit my 07 Altima but the DB691 would.

Maybe because these are rated at 2.7 ohms? But they fit perfectly no mods, brackets etc just can't use the Polk grills..

By Jovan on October 27, 2010

63

found this helpful.

good product

I recommend this product,sounds good and easy installation

By prez on November 15, 2009

62

found this helpful.

Great Clarity

Great speakers that allow you to crank it up inside without blasting out the neighbors. You can definitely hear me coming but you don't hear the annoying rattling that most speakers generate. These speakers are with out a doubt the best bang for the buck!

By keith on December 20, 2010

62

found this helpful.

not bad.

These speaker's aren't to bad, I think my jl audio speakers that I had previous to these mm's sound better at extreme volume.

By D on January 11, 2015

59

found this helpful.

Polk Audio MM691

Great speakers. good ammount of bass, and decent mids and highs. would reccomend to others.

By Gerald on September 14, 2011

60

found this helpful.

great product , amazing price

I am very satisfied with the product. The sound quality compared to my old marine speakers is a huge difference. The system has sound filtration so the sound can not be more clear. overall it is a great product for marine use.

By sertan on August 21, 2009

60

found this helpful.

POLK SPEAKERS

SUPER DEALS ~ FAST SAFE SHIPPING ~ EXCELLENT PRICE A+A+

By SASSYGIRL on March 22, 2010

61

found this helpful.

Polk Audio MM691

These sound great in the back deck of my new Challenger! The high's and mid's can handle a lot of Power from my Kicker 350.4 amp,and they still have clarity!

By Christopher on August 12, 2009

57

found this helpful.

They slam killer base

I have a old school rockford punch 250.2 amp and a alpine 103BT head unit I set the cross over to high pass 80hzs and these speakers slam with killer base I'm so very happy with this buy.I acutualy cut my doors to make theys fit behind the door panels so know one could tell what I was running they trip on how loud and how hard they punch I highly recommed these speakers and I bought them because of these reviews there so right. I thank you Sonic reviews.

By Michael on May 19, 2012

56

found this helpful.

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