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Polk Audio MM840DVC

250W 8" Mobile Monitor Series Dual 4 ohm Marine Certified Car Subwoofer

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• 500W Peak
• 250W RMS
• Polymer cone woofer
• Butyl rubber surround
• Advanced carbon composite basket will not flex during peaks

Learn more about the mm840dvc

Good news and a little bad...

This item has been discontinued

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

mm842dvc thumbnail

Polk Audio MM 842 DVC (MM842DVC)

OUR PRICE: $149.00

View item

Product Highlights


• 500W Peak
• 250W RMS
• Polymer cone woofer
• Butyl rubber surround
• Advanced carbon composite basket will not flex during peaks

Description


Polk Audio brand icon

Authorized dealer

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

  • 8" Dual 4 Ohm MM Series Subwoofer
  • Power Handling:
    • Peak: 500 watts
    • RMS: 250 watts
  • Polymer cone woofer
  • Butyl rubber surround
  • Advanced carbon composite basket will not flex during peaks
  • High-temperature copper voice coil and polyamide former
  • Klippel distortion analyzer optimizes the woofer's motor structure, voice coil alignment and suspension
  • Heavy duty input terminals
  • Sensitivity: 90 dB
  • db Series Subwoofer Grill Available
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product history:

Polk Audio MM 842 DVC thumbnail
(newest, current model)
Polk Audio MM840DVC thumbnail
(previous model, replaced by Polk Audio MM 842 DVC (MM842DVC))
Polk Audio MM2084DVC thumbnail
(previous model, replaced by Polk Audio MM840DVC)

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Polk Audio MM840DVC Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Polk Audio MM840DVC Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Polk Audio MM840DVC Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 Polk Audio MM840DVC Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
Mobile Monitor Series
Subwoofer Size
8"
Peak Power Handling
500 watts
RMS Power Handling
250 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohms
Sensitivity
90 dB
Xmax (millimeters)
.75 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Polymer
Woofer Surround
Butyl Rubber
Subwoofer Grille
No
Re-Cone Kit Available
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Sealed
Top-Mount Depth (Mounting Depth)
4"
Cutout Diameter
7-1/16"
Shallow Mount Installation
No
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

MM840DVC

Weight:

10.00lbs

Internal SKU:

mm840dvc

Internal Product ID:

18532

Product and How-to Videos


  • Polk Audio Mobile Monitor Series Subwoofers | Product Overview
  • Car Subwoofer Size Buying Guide | What Size of Sub Should I Get?

Customer Ratings & Reviews



5 star
86%
4 star
14%
3 star
0%
2 star
0%
1 star
0%



Durability
4.7
Value
4.6
Features
5
Design
5
Usability
5

Customer Reviews

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Good speakers

These sound very good. They hit fast and have good, full-range low-end sound. They sound quality enough for classical and add solid enough bass for pop music. If you want some good-sounding low end, you should consider these. If you just want lots of volume, there may be better choices for you. I added a pair of these with a suitable amp, and they don't add huge amounts of volume, so if you have space for bigger subwoofers, I would get a bigger size (nothing larger would fit in my Mustang's trunk), but if your main concern is adding a bit of good, clean bass, these are worth the money.

By Sound Lover on December 27, 2011

40

found this helpful.

Great little 8

This little bugger went into a custom box that sits in my tourpak on my 08 Harley Ultra. I replaced a RE Audio DVC 8 with this Polk MM 8 DVC the difference is dramatic. The RE gave out on me, one of the voice coils burnt. These Polks are very clean and precise. Polk Subs and speakers from now on. Pushing 168 watts via back two channels of a rockforg fosgate pbr300x4 and it just sounds great. I know it will just get better once I allow it to break in. Thanks again to Sonix, great value and great customer service.

By tj on October 28, 2011

39

found this helpful.

GOOD CHOICE

I have a lot of polk audio products, and this subwoofer is why i keep buying polk audio. This subwoofer will hold its on from 200 to 300 rms watts. Sound is very good for a 8 inch sub. As i have grow older i no longer need the big subs. This subwoofer will produce pure low end within its requirements.

By JERRY on May 25, 2012

36

found this helpful.

Polk Audio MM840DVC

made a custom box that fit inside the factory center console for a jeep wrangler x , this sub was small enough to work for what i need and has plenty of power, 1 eight hits almost as hard as the 2 ten inch concept subs i have in my pickup

By JP on December 21, 2010

36

found this helpful.

All-around awesome

All-around a great sub. I gave durability a 3 because I did have a problem where it started making a rattling sound (was not voice coils). Polk did fix it under warranty without any hassles. I wish it had a little higher power handling (but you know these specs when purchasing). It sounds clean, hits nice. Overall a good buy.

By Chris on May 14, 2012

34

found this helpful.

Tuff sub

Good sound from a small package. Very pleased with Polk.

By John on October 29, 2010

34

found this helpful.

Polk 8" DVC sub

This was actually the second one of these subs that I have purchased. Both were installed in Toyota ext.cab pickups. With space at a premium, my choices were limited. Their performance far exceeds the price. Excellent value. My music choices are blues , rock ,and sometimes cont. jazz.

By MB on May 15, 2011

29

found this helpful.

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