Contact us
Close contact box

Polk Audio MM 842 SVC

MM1 Series 8" 4-ohm subwoofer

Item # 107MM842S

Polk Audio rethinks their legendary Mobile Monitor Series subs.

Polk Audio rethinks their legendary Mobile Monitor Series subs.

Item # 107MM842S

Ships free

In Stock
C$219.99 each
Add to wishlist

About the Polk Audio MM 842 SVC

Advanced materials and engineering

Polk Audio rethinks their legendary Mobile Monitor Series subs. Their MM1 Series subwoofers offer superior performance from lighter materials, so you'll get the impact you want without the extra weight of a conventional sub. They use advanced engineering and optimized components to reproduce your sound with uncompromising accuracy, and Polk built these marine-certified subs to take some serious abuse.

Advanced materials and engineering

Polk Audio rethinks their legendary Mobile Monitor Series subs. Their MM1 Series subwoofers offer superior performance from lighter materials, so you'll get the impact you want without the extra weight of a conventional sub. They use advanced engineering and optimized components to reproduce your sound with uncompromising accuracy, and Polk built these marine-certified subs to take some serious abuse.

Efficient power handling

The MM 842 SVC 8" 4-ohm subwoofer handles up to 300 watts RMS, with a titanium-coated polymer cone that'll stand the test of time. The fiberglass-reinforced ABS basket resists flexing during heavy excursion, so your sub hits hard without distorting. The sub's inner workings are designed to handle the stress of heavy bass, so go ahead and turn it up.

Marine-certified

This sub has earned Advanced Ultra-Marine certification and an IP56 rating, which means it'll deliver powerful bass in some challenging conditions. The composite cone, waterproof surrounds, stainless steel mounting hardware, and ABS basket all resist corrosion, and the sub even features weep holes for proper drainage.

To drive this single subwoofer, we recommend a mono amplifier rated between 225 and 450 watts RMS at 4 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

READ LESS

Product highlights:

  • 8" 4-ohm subwoofer
  • titanium-plated composite cone
  • butyl rubber surround
  • fiberglass-reinforced ABS basket
  • certified for marine use
  • power handling: 300 watts RMS
  • peak power handling: 900 watts
  • frequency response: 30-2000 Hz
  • sensitivity: 85 dB
  • top-mount depth: 4-1/8"
  • grille not included
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # AA8842-A

What's in the box:

  • One 8" subwoofer
  • 1 Foam gasket
  • Eight 1-3/8" Allen head stainless steel screws
  • Two 7.5-amp ATO fuses (one installed/ one extra)
  • Wiring diagram/ Specification sheet (English/ French/ Spanish/ German/ Italian)
  • Fuse note (English/ French/ Spanish/ German/ Italian)
  • Online registration information

Customer reviews

Loading reviews...

Polk Audio MM 842 SVC reviews

Average review:

3 reviews

Filter by rating

Customer photos

Sort reviews

Sort by:
Items per page:
View page:

Awesome sub!

Crutchfield customer from Jacksonville, FL on 8/10/2019

Verified customer (What's this?)
Verified employee purchase (What's this?)

Awesome sub! No matter what size you use you will be impressed. I have used Polk for years and for the quality you get you can't beat them. Enjoy!

Pros: Build quality, durability, enclosure size

Cons: None

Crutchfield response on

0 of 0 found this helpful

Polk Audio MM 842 SVC

Crutchfield customer from Chattahoochee, FL on 3/9/2019

Verified customer (What's this?)
Verified employee purchase (What's this?)

Tight accurate bass

Pros:

Cons:

Crutchfield response on

0 of 0 found this helpful

Goldilocks

Eric from Sterling, MA on 11/20/2017

2017 Jeep Wrangler Unlimited

Verified customer (What's this?)
Verified employee purchase (What's this?)

I tried a few other options when looking to tune my Jeep Wrangler's audio to my liking. I wanted crisp, deep bass without too much noise and not taking up valuable trunk space. A compact powered sub left me wanting more, an old 10" sub I had was too loud, and took up too much space. This Polk 8" ended up being just was I was looking for. When boxed, it is significantly smaller than a 10" so takes up much less space, but also hits hard and provides crispy goodness. The fact that they are marine rated only adds to the Wrangler character.

Pros: Hits Hard, Deep bass, Not too loud, compact.

Cons:

Crutchfield response on

4 of 4 found this helpful

Verified customer (What's this?)
Verified employee purchase (What's this?)

Pros:

Cons:

Crutchfield response

<< >>

More details on the Polk Audio MM 842 SVC

Pat M.

Product Research

Features

Terminals: The woofer has heavy duty spring terminals that will accept single banana plugs, pin connectors, and bare wire up to 10 gauge.

Ultra-Marine Certified: Polk MM Series speakers are built to withstand exposure to moisture and UV rays, so they work well in boats and cars (IP56 rated).

Dynamic Balance: Dynamic Balance is a proprietary Polk Audio technology using laser imaging to determine what combination of speaker materials create the least amount of resonance. Eliminating resonance in speakers results in a wide, smooth response and low distortion.

Sealed Box Volume: Polk recommends a sealed enclosure between 0.5 ft³ and 1.2 ft³.

Ported Box Volume: Polk recommends a ported enclosure between 0.66 ft³ and 1.2 ft³.

Loading accessories...

Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Killer price I couldn't pass up. [ Sam  May 27, 2019 ]
A
Putting this in a dummy panel in the back of an older Jeep XJ for deeper bass. [ Jeff  Mar 13, 2019 ]

2 questions already asked

Q
what would be a really good amp to make these thump?
[ Brent  Aug 07, 2019 ]
1 answer
A
Thanks for your question. For information on selecting the best amp for your subs I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system.
[ Krissy  Aug 19, 2019 ]  Staff
Q
Can the Polk MM 842 be used free air or does it need an enclosure?
[ Andrew  Mar 11, 2018 ]
2 answers
A
According to Polk's documentation it requires an enclosure. I mounted it in the rear shelf in my G35 sedan, but I think I'm going to move it to an enclosure in the trunk. It doesn't sound bad, but I think it can sound better.
[ William  Mar 11, 2018 ]
A
No you should always put any speaker in some kind of enclosure. Make sure it is rated to match the specs on the speaker/ sub woofer
[ Shawn  Mar 11, 2018 ]

Loading articles...

TOP