Garage
Shop

See all parts that fit your 2006 Impreza

Polk Audio MM691

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

Product videos
highlight-star-icon

• Peak Power: 600W
• RMS Power: 250W
• 1" Silk Composite Soft Dome Tweeter
• Mounting Depth: 3-3/16" • Woven Glass Composite Woofer Cone
• 2.7 Ohm 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 (MM 692)

OUR PRICE: $229.00

View item

Loading...
72-9300 main

Metra 72-9300

Install New Car Speakers in select 1976-2015 vehicles from Subaru, Nissan, Mazda

8
-40.03%

$8.99

List price $14.99

Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

122
-33.36%

$79.96

List price $119.99

43DSC6504 main

Kicker DSC650 (43DSC6504)

480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)

28
-10.53%

$84.99

List price $94.99

UTE-73BT main

Alpine UTE-73BT

Single DIN Digital Media Receiver with Bluetooth (SiriusXM Ready)

44
-16.69%

$149.95

List price $180.00

KW-M560BT main

JVC KW-M560BT

6.8" Double-DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto (Sirius XM Ready)

10
XED62 main

Cerwin-Vega XED62

600W Peak (70W RMS) 6.5" XED Series 2-Way Coaxial 4-ohm Speakers

15
-16.67%

$49.99

List price $59.99

VSP65 main

NVX VSP65

600W Peak (200W RMS) 6.5" V-Series 2 Way Coaxial Car Speakers

64
-15.39%

$109.99

List price $129.99

MVH-S322BT main

Pioneer MVH-S322BT

Single DIN Digital Media Receiver with Bluetooth and Amazon Alexa

7
-13.34%

$129.99

List price $150.00

P1650 main

Rockford Fosgate Punch P1 P1650

220W Peak (110W RMS) 6.5" Punch P1 Series 2 Way Coaxial 4-ohm Speakers

61
Limited time!
XAV-AX3200 main

Sony XAV-AX3200

6.95" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, WebLink, Apple CarPlay, and Android Auto (SiriusXM Ready)

14
-25.50%

$298.00

List price $399.99

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 Ohm Impedance
• Sensitivity: 94dB

Description


Polk Audio brand icon

Authorized dealer

Looking for More Options?
Check out the "Related Items" Tab.



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 ohm 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 ohm. The product box states the impedance to be 4 ohm and the speaker magnet shows 2 ohm, 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 ohm.

Product history:

Polk Audio MM692 thumbnail
(newest, current model)
Polk Audio MM691 thumbnail
(previous model, replaced by Polk Audio MM692 (MM 692))
Polk Audio MMC690 thumbnail
(previous model, replaced by Polk Audio MM691)

Loading...
DMH-1800NEX main

Pioneer DMH-1800NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready

2
-16.67%

$349.99

List price $420.00

DMH-W4660NEX main

Pioneer DMH-W4660NEX

6.8" Double DIN Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, and Android Auto (SiriusXM Ready)

2
-20.00%

$599.99

List price $750.00

CV15BT main

Cerwin-Vega CV15BT

Single Din Digital Media Receiver with Bluetooth

3
Limited time!
DMH-W3050NEX main

Pioneer DMH-W3050NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay and Android Auto, and Built-in Alexa (Sirius XM Ready)

1
-24.20%

$469.99

List price $620.00

UTE-73BT main

Alpine UTE-73BT

Single DIN Digital Media Receiver with Bluetooth (SiriusXM Ready)

44
-16.69%

$149.95

List price $180.00

KW-M560BT main

JVC KW-M560BT

6.8" Double-DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto (Sirius XM Ready)

10
Limited time!
DMX709S main

Kenwood eXcelon DMX709S

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto (Sirius XM Ready)

20
-33.50%

$399.00

List price $600.00

Limited time!
XAV-AX8500 main

Sony XAV-AX8500

10.1" Single DIN Floating Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, and Wired Android Auto (SiriusXM Ready)

2
-20.20%

$798.00

List price $999.99

Kenwood eXcelon KMM-X705

Single DIN Digital Media Receiver with Bluetooth, Built-in Alexa (Sirius XM Ready)

6
-20.40%

$199.00

List price $250.00

DEH-S7200BHS main

Pioneer DEH-S7200BHS

Single DIN CD Receiver with Bluetooth, HD Radio and SiriusXM Ready

2
-10.72%

$249.99

List price $280.00


Best selling similar products

DB652 small

Polk Audio DB652 (DB 652)

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

(12)

$109.00

List price $119.99

DB402 small

Polk Audio DB402 (DB 402)

• 135 watts Peak Each, 45 watts RMS Each
• 3/4" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

(4)

$90.00

List price $99.99

DB462 small

Polk Audio DB462 (DB 462)

• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

(7)

$90.00

List price $99.99

DB692 small

Polk Audio DB692 (DB 692)

• 450 watts Peak Each, 150 watts RMS Each
• 3/4" dual Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

(15)

$139.00

List price $149.99

DB522 small

Polk Audio DB522 (DB 522)

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome tweeters
• UV-tolerant Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

(13)

$100.00

List price $109.99

DB6502 small

Polk Audio DB6502 (DB 6502)

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

(8)

$200.00

List price $209.99

DB5252 small

Polk Audio DB5252 (DB 5252)

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" dual Silk Dome tweeters
• UV-Resistant Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

(4)

$200.00

List price $209.99

MM652 small

Polk Audio MM652 (MM 652)

• 300 watts Peak Each, 100 watts RMS Each
• IP56 marine certified, with weep holes for proper drainage
• 1" Terylene Dome pivoting tweeters
• Titanium Coated Composite cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

(9)

$179.00

List price $249.00

51PSC654 small

Kicker PSC65 (51PSC654)

• 120 watts Peak Each, 60 watts RMS Each
• 3/4" Titanium Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 92.5 dB

$159.96

List price $219.99

MP694 small

Diamond Audio MP694

• 300 watts Peak Each, 150 watts RMS Each
• 1" Horn tweeters
• Impedance: 4 ohm
• Sensitivity: 101 dB

$549.99

List price $539.99

Specifications & Details


Speaker Specifications
Series
Polk MM Series
Priced Per
Pair
Number of Speakers
2
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 
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


Polk Audio MM691 thumbnail image

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

Sort by:

Loading...

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

71 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

69 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

67 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

69 found this helpful


good product

I recommend this product,sounds good and easy installation

By prez on November 15, 2009

68 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

68 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

67 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

66 found this helpful


POLK SPEAKERS

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

By SASSYGIRL on March 22, 2010

67 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

62 found this helpful




COM-708-Gray-Pair small

Absolute COM-708 (GRAY PAIR)

Pair of 7.5" TFT-LCD Monitors Loaded in Universal GRAY Leather Headrests w/ Adjustable Poles

$254.99

List price $439.99

No picture

Sony XAV-AX6000 (Like New - Open Box)

6.95" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto (Sirius XM Ready)

$578.00

List price $699.99

No picture

Sony XAV-AX4000 (Open Box, Great)

6.95" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto (Sirius XM Ready)

$399.99

List price $599.99

PAIR-COM-1008IRC small

Pair Package: 2 Absolute COM-1008IR (CREAM)

2 Universal Cream Headrest Pillows with Preloaded 10" TFT-LCD Monitors (COM1008IR Cream)

$270.00

List price $699.98

PR-D7 Black small

Sangean PR-D7 (Black)

Portable Digital AM/FM Radio Compact Tuning Receiver

(1)

$62.99

List price $99.95

No picture

Sony XAV-AX7000 (XAVAX7000) (Open Box, Great)

6.95" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto (Sirius XM Ready)

$453.60

List price $699.99

07-13-chevy-avalanche-fspkg small

NVX Front N-Series Speaker Upgrade Kit for 2007-2013 Chevy Avalanche

Pair of 6.5" NVX N-Series Speaker Upgrade Kit with Metra Speaker Adapters | Fits select 2007-2013 Avalanche

(116)

$86.98

List price $141.98

Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

2006 Subaru Impreza

2005 Subaru Legacy

1990 Jaguar XJS

1995 Dodge B1500

2012 Lexus GX460

2021 Toyota Highlander

1980 Dodge Colt

2020 Honda Pilot

2005 GMC Canyon

2013 Nissan Versa

Vehicle
Store
Delete

2005 Harley Davidson FXSTSI Springer Softail

Vehicle
Store
Delete

2016 Can-Am Commander Max 1000 DPS

2013 Can-Am Commander E LSV

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.