Garage
Shop

See all parts that fit your 1982 Capri

Polk Audio MM840DVC

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

Product videos
highlight-star-icon

• 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 MM842 DVC

OUR PRICE: $149.00

View item

Loading...
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

Club 322F main

JBL Club 322F (SPKCB322FAM)

150W Peak (50W RMS) 3.5" Club Series 2 Way Coaxial 3-ohm Speakers

1
-27.29%

$79.95

List price $109.95

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

DB652 main

Polk Audio DB652 (DB 652)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

12
-9.16%

$109.00

List price $119.99

Limited time!
Club 622 main

JBL Club 622

360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers

5
-28.58%

$99.95

List price $139.95

MPK 163.3 main

Hertz MPK163.3

600W Peak (300W RMS) 6.5" Mille PRO Series 3-way 4-ohm Component Speaker System

2
-14.89%

$999.99

List price $1175.00

PNW-65CS2 main

AudioControl PNW-65CS2

250W Peak (200W RMS) 6.5″ PNW Series 2 Way Component 3-ohm Speakers

4
-5.90%

$319.00

List price $339.00

NSP65 main

NVX NSP65

540W Peak (180W RMS) 6.5" N-Series 2 Way Coaxial Car Speakers

93
-35.19%

$69.99

List price $107.99

Club 522F main

JBL Club 522F (SPKCB522FAM)

270W Peak (90W RMS) 5.25" Club Series 2 Way Coaxial 3-ohm Speakers

-42.29%

$74.99

List price $129.95

Club 620F main

JBL Club 620F (SPKCB620FAM)

330W Peak (110W RMS) 6.5" Club Series 2-way 3-ohm Shallow Mount Coaxial Car Speakers

2
-38.48%

$79.95

List price $129.95

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 MM842 DVC thumbnail
(newest, current model)
Polk Audio MM840DVC thumbnail
(previous model, replaced by Polk Audio MM842 DVC)
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


Best selling similar products

VCW82v3 small

NVX VCW82 Version 3 (VCW82v3)

• Peak Power: 1300 watts
• RMS Power: 650 watts
• Impedance: Dual 2 ohm
• Carbon Fiber Enhanced Non-Pressed Paper Cone
• High Roll Foam Surround with black nylon stitching
• Mount depth: 5.31"
• Sensitivity: 83 dB (1W/1m)

(12)

$169.99

List price $203.99

47KBRW8 small

Kicker 47KBRW8 ReFLEX™

• 8" ReFLEX™ Passive Radiator
• Rubber covered plastic Cone
• Rubber Surround

(1)

$49.99

List price $59.99

DB-SA2508 D1 small

Deaf Bonce Apocalypse DB-SA2508 D1

• Peak Power: 1600 watts
• RMS Power: 800 watts
• Pressed Paper Cone
• Foam Surround
• Impedance: Dual 1 ohm
• Mount depth: 5.22"
• Sensitivity: 84.7 dB

(1)

$229.90

List price $229.90

VCW84v3 small

NVX VCW84 Version 3 (VCW84v3)

• Peak Power: 1300 watts
• RMS Power: 650 watts
• Impedance: Dual 4 ohm
• Carbon Fiber Enhanced Non-Pressed Paper Cone
• Custom High Roll Foam Surround with black nylon stitching
• Mount depth: 5.31"
• Sensitivity: 83 dB (1W/1m)

(15)

$169.99

List price $203.99

8W3V3-4 small

JL Audio 8W3V3-4

• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Mineral-Filled Polypropylene Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 4.63"
• Sensitivity: 83.24 dB

(45)

$349.99

List price $349.99

L7S82 small

Kicker L7S82 (44L7S82)

• Peak Power: 900 watts
• RMS Power: 450 watts
• Impedance: Dual 2 ohm
• Injection Molded Polypropylene Cone
• Ribbed Santoprene Surround
• Mount depth: 4-3/4"
• Sensitivity: 82.37 dB

(1)

$175.96

List price $239.99

SPK-8S4 small

AudioControl SPK-8S4

• RMS Power: 500 watts
• Impedance: Single 4 ohm
• Paper Fiber with Mica Coating Cone
• Rubber Surround
• Mount depth: 4.291"
• Sensitivity: 81.9876 dB

(1)

$179.00

List price $229.00

KAPPA 83WDSSI small

Infinity Kappa 83WDSSI (INFSUBKA83WDSSIAM)

• Peak Power: 1200 watts
• RMS Power: 400 watts
• Impedance: Single 2 or 4 ohm
• Glass Fiber Cone
• Rubber Surround
• Mount depth: 5.42"
• Sensitivity: 91 dB

(2)

$149.95

List price $289.95

8W1v3-4 small

JL Audio 8W1v3-4


• RMS Power: 150 watts
• Impedance: Single 4 ohm
• Mica Injected Polypropylene - MIPP Cone
• Nitrile Butadiene Rubber NBR Surround
• Mount depth: 3.86"
• Sensitivity: 84.8 dB

(10)

$199.99

List price $199.99

CWRT84 small

Kicker CWRT84 (48CWRT84)

• Peak Power: 600 watts
• RMS Power: 300 watts
• Impedance: Dual 4 ohm
• UV-Treated Polypropylene Cone
• UV-resistant Santoprene Surround
• Mount depth: 2-11/16"
• Sensitivity: 81.8 dB

(4)

$151.96

List price $209.99

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 ohm
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


Polk Audio MM840DVC thumbnail image

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

Sort by:

Loading...

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

62 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

61 found this helpful


Tuff sub

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

By John on October 29, 2010

56 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

54 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

53 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

53 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

48 found this helpful




BMWX-3880 small

Nitro BMWX-3880

1000W 2-Channel BMWX Series Mosfet Amplifier with Remote Bass Control

(2)

$59.99

List price $149.95

DNN770HD small

Kenwood eXcelon DNN770HD

Double-Din In-Dash DVD Car Stereo w/ GPS, Bluetooth, 6.1" Touchscreen Monitor and Wi-Fi Ready

(4)

$769.99

List price $1299.99

CD-IU201N small

Pioneer CD-IU201N

AppRadio Mode USB to 30-Pin Interface Cable for iPhone 4S and iPhone 4

(3)

$19.99

List price $59.99

TS-W303R small

Pioneer TS-W303R

12" Single 4 ohm Champion Series Car Subwoofer

(28)

$55.99

List price $89.99

KD-R900 small

JVC KD-R900

In-Dash CD/MP3/WMA Receiver with Built-in Bluetooth Hands-free, Dual USB Inputs, Aux Input, and Remote

(21)

$179.99

List price $299.95

AAI-PIOP small

PAC AAI-PIOP

Pioneer P-Bus Auxiliary Audio Input Cable

(9)

$7.95

List price $9.95

NVA-CU6 small

Sony NVA-CU6

Car Cradle for Sony nav-u NV-U73T Hand Held Portable GPS Navigation

(1)

$12.99

List price $49.99

FM-MOD small

Boss FM-MOD

FM Modulator with 7 Frequency Channel Settings

(2)

$15.99

List price $49.99

DTS-750.2 small

RE Audio DTS-750.2

600W, 2-Channel Class A/B DTS Series Car Amplifier

(3)

$69.99

List price $329.99

Related Searches


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

1982 Mercury Capri

1995 Mazda 626

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.