Skip Navigation

MB Quart NK1-116

Nautic Series 6-3/4" marine speakers (Black)

9 Reviews

Item # 049NK1116B

In Stock

 Ships FREE

Was: $89.99

Price break: -$17.00

Add to Cart

Earn up to 73 Rewards points

Ask an expert

Our VA-based experts can help.




Our take on the MB Quart NK1-116

MB Quart's NK1-116 speakers bring outstanding performance and marine-rated durability to your weekend adventures. Designed for boating or powersports applications, these powerful full-range 6-3/4" speakers combine outstanding audio performance with outdoor-ready reliability.

Better sound for land or sea

MB Quart's NK1-116 speakers bring outstanding performance and marine-rated durability to your weekend adventures. Designed for boating or powersports applications, these powerful full-range 6-3/4" speakers combine outstanding audio performance with outdoor-ready reliability.

Quality components for impressive performance

You're buying marine speakers because you demand the best possible sound wherever you go. MB Quart Nautic speakers give you what you want, with quality components and thoughtful design. The UV-resistant polypropylene cone is attached to the frame with a durable butyl rubber surround and stabilized with a woven aramid fiber spider that resists weather-and temperature related degradation.

MB Quart mounts the 1" titanium dome tweeter securely in the grille for superior high-frequency dispersion. These efficient speakers deliver maximum output using minimal amplifier power.

Built tough to rock hard

These MB Quart speakers will perform in extreme conditions, with water-resistant components and super-strong composite baskets, magnet covers and grilles. The exterior surfaces are coated with special UV-resistant paint that stands up to broiling sunlight. Inside, the crossover network is conformal-coated to protect against fresh and salt water spray, not to mention dust and sand. In fact, your MB Quart speakers are IPX67-rated, which means they meet the highest standards of weather resistance.

More about MB Quart

Three decades of marine and powersports audio expertise goes into MB Quart's Nautic line. These rugged, high-quality receivers, speakers, amps, and subs provide great sound and rugged, all-weather reliability. The MB Quart "Life Shield" badge means your gear has been designed and tested to stand up to the toughest conditions on the water or off the beaten path.

Note: MB Quart describes this model as a 6-1/2" speaker. Most manufacturers designate this same frame size as a 6-3/4" speaker. For simplicity's sake, we list it as a 6-3/4" speaker.

Product Highlights:

  • 6-3/4" marine speakers (pair)
  • polypropylene woofer with Butyl rubber surround
  • 1" titanium tweeter
  • water-resistant aramid fiber spider
  • IPx67 certified for marine use
  • lightweight composite frame
  • UV- and salt water-resistant
  • power range: 2-60 watts RMS (120 watts peak power)
  • frequency response: 70-22,000 Hz
  • impedance: 4 ohms
  • sensitivity: 91 dB
  • top-mount depth: 3-1/16"
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • Two 2-way marine speakers
  • Eight 1" Stainless steel screws
  • Quick start installation guide

Great speaker for a any use

matthew, Newhall, CA


MB Quart NK1-116 Reviews

Average Customer Review(s):

(9 Reviews)

MB Quart NK1-116

Crutchfield customer from Old Hickory, TN on 3/3/2019

Crutchfield Customer Review (What's this?)

Was looking for a food sounding marine speaker that had high and low sound, without breaking the bank. With the help your guys they pointed these out to me and asked what I was looking for and they found it. They go great with my amp, and head unit. Amazing sound. Deep lows with bass that gives the boat a little shake bit not that chest throbbing feel. The highs are crystal clear and can really crank if you are looking to blast the sound across the cove. Great speakers. Definitely would recommend. Thanks Crutchfield.

Pros: Highs and lows, crisp and clear. No distortion or vibration.

Cons: None

MB Quart NK1-116

Crutchfield customer from Dubuque, IA on 8/12/2018

Crutchfield Customer Review (What's this?)

For the price when paired with a good deck excellent preformance.



MB Quart NK1-116

matthew from Newhall, CA on 2/26/2018

Crutchfield Customer Review (What's this?)

Great speaker for a any use



Good value

Ben from Madisonville, KY on 4/12/2017

Crutchfield Customer Review (What's this?)

Decent speakers for our pontoon, especially for the price!!!!

Pros: Good value speaker for our pontoon

Cons: Really need a mounting template!!!!! Had to use my own mounting hardware as well

Great value.

Mike from Adrian, MI on 4/7/2017

Crutchfield Customer Review (What's this?)

I will use these again, as their value is almost unbeatable in a marine speaker. They sound good if you aren't looking for much bass from them, are built solidly, have good magnets, and good sensitivity. Be careful when mounting not to pinch the wires for the tweeter.

Pros: Solid construction. Good Mid & High Frequency reproduction. Comes with the proper mounting hardware. Good sensitivity for the price point.

Cons: Somewhat thin on low mids and lows. I've used many 6" that have better bottom end, but the customer was happy. My major complaint is how they route the wires that power the high frequency driver. They are put in a position that leaves them susceptible to pinching around the outer edge. Make sure your hole in your enclosure is either notched or slightly enlarged to prevent this. My set also did not come with the quick connectors to install, but I have my own.

MB Quart NK1-116

Crutchfield customer from Honolulu, HI on 4/4/2017

Crutchfield Customer Review (What's this?)

These speakers can handle anything!



MB Quart NK1-116

Joe from Houston, TX on 11/17/2016

Crutchfield Customer Review (What's this?)

I love them very good



Great sound

Big D from Harrisville utah on 7/6/2016

Crutchfield Customer Review (What's this?)

These speakers are awesome I put them on the outside of my Rv clean crisp sound and they are not even amplified they even look like they are well built

Pros: Great product Sound Quality

Cons: You have to make sure you have plenty of room they are big for a 6 1/2 speaker

boat install

jc from Olive Branch, MS on 7/5/2016

Crutchfield Customer Review (What's this?)

great speakers great sound

Pros: love the sound and the quality

Cons: needs a template for install


Hands-on research

Product Research


Sealed Voice Coils: The voice coil assemblies are sealed to keep water out.

Water Resistant Spider: Each speaker uses a resin coated, woven, red aramid fiber composite spider, which will not degrade over time and is not susceptible to temperature changes.

Woofer Cone: The woofer cones are made of UV protected Thermal Formed Polypropylene.

UV Protection: The composite plastic grills and frames are UV protected, helping prevent color fade.

Tweeters: The tweeters are bridge mounted to the grilles, rather than to a pole piece, thus there is no chance of water leaking through the woofer cone.

Marine Certified Crossover: The crossovers are conformal Coated and have PTC (Positive Thermal Coefficient) tweeter protection.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

I purchased a pair of these for my pontoon boat and the sound is excellent. Installation was a breeze and MB Quart has a reputation for quality products. [ WILLIAM  May 07, 2018 ]
I have a MB Quart Stereo system on my boat, and figured these speakers would compliment the system nicely. [ Eric  Apr 05, 2017 ]
They sound great! I've heard 4 pairs of them (light up version too of course though) with 4-10's, MB Quart amps, and MB Quart bluetooth wireless adapter to connect your phone. The system sounds awesome! Lights are cool too but I didn't need all that. [ Matt  Mar 28, 2017 ]
size, frequency response, price. [ RUSS A  Dec 16, 2016 ]
I have the 6in tower speakers already and they are great [ KAINOA  Mar 21, 2017 ]