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MB Quart FKB116 Formula Series 2-Way Coaxial Speakers

MB Quart FKB116 Formula Series 2-Way Coaxial Speakers

4.1· 29 ratings

Best price now

$33.49at WalmartObserved at 6:18 AM

16% under what the other stores charge

Compared across 6 stores. Prices are checked against each store and labelled with when.

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Our take on the MB Quart FKB116 Formula Series 2-Way Coaxial Speakers

The MB Quart FKB116 is a 6.5-inch two-way coaxial car speaker from the Formula Series. Each speaker handles 60 W RMS and 120 W peak at 4 ohms, with an aluminum dome tweeter crossed at 4 kHz over a polypropylene cone and butyl rubber surround. It is sold as a single speaker, so a pair needs two units. At $33.49 at Walmart as of November 4, 2026, it sits at the low end of its recent range, well under the typical $45 to $60 street price for a single unit.

Best forBudget door-speaker replacementsShoppers upgrading factory speakers without adding an ampOwners who want a bright, detailed tweeterSimple head-unit-powered installs
Pros
  • Efficient at 88 dB, so a stock head unit can drive it
  • Aluminum dome tweeter gives crisp highs
  • Butyl rubber surround holds up better than foam
  • Shallow 2.13-inch mounting depth fits many doors
  • Grilles included in the box
Cons
  • Sold singly, so a pair costs double the listed price
  • Bright tweeter can sound harsh to some ears
  • Only 60 W RMS, so it limits big-amplifier builds
  • No separate crossover box; the 4 kHz crossover is built in
  • Bass is modest for a 6.5-inch driver

MB Quart FKB116 Formula Series 2-Way Coaxial Speakers prices at every store

  • WalmartNew

    In stockSold by Hour Loop

    $33.49Observed at 6:18 AM
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  • mobileiGo.comNew

    In stock

    $38.95Observed at 6:18 AM
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  • AudiosavingsNew

    In stock

    $39.95Observed at 6:18 AM
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  • eBayNew

    In stockSold by spreetail

    $42.99Observed at 6:18 AM
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  • TargetNew

    Out of stock

    $42.99Observed at 6:18 AM
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  • Absolute USANew

    Out of stock

    $59.99Observed at 6:18 AM
    Visit store

Also available at

  • eBayCheck price at eBay
  • WalmartCheck price at Walmart
  • Audio JamCheck price at Audio Jam
  • Creative AudioCheck price at Creative Audio
  • SharpTruck.comCheck price at SharpTruck.com

MB Quart FKB116 Formula Series 2-Way Coaxial Speakers price history

Lowest price we've seen: $31.28 on Nov 4 at Creative Audio. Tracked across 11 stores since Nov 4.

What reviewers say

Rated 4.1 out of 5 from 29 ratings. Owners generally call them a solid value for the money and note clearer highs than stock speakers, while some find the tweeter bright and the bass light.

Pros
  • Good sound for the price
  • Noticeably clearer highs than factory speakers
  • Easy drop-in fit in many vehicles
Cons
  • Tweeter can sound harsh at high volume
  • Limited low-end output
  • Sold one at a time, which surprises buyers

About the MB Quart FKB116 Formula Series 2-Way Coaxial Speakers

Description: The ideal balance of a high end car audio system requires the perfect mix of speaker tone, deep bass impact and clean undistorted power. With MB Quart we make it simple to develop the impeccable Formula for a great sounding system. The Formula line offers a high end sound quality though a full line of aluminum dome tweeters with polypropylene cone speakers. These components can be matched with 400 watt peak power, dual 4 ohm subwoofers to command the deep bass frequencies all powered by the Q-Stasis circuitry amplifiers in the Formula line up. Features: Pair MB Quart FKB116 6.5" 240 Watt 2-Way Car Speakers RMS Power Handling: 60 Watts (Per Speaker) / 120 Watts (Per Pair) Peak Power Handling: 120 Watts (Per Speaker) / 240 Watts (Per Pair) Speaker Impedance: 4 Ohms Frequency Response: 40 Hz - 22 kHz Sensitivity: 88 dB Crossover Point: 4 kHz Crossover Slope: 12 dB Tweeter Dome Material: Aluminum dome tweeters deliver great sound with increased reliability Speaker Surround: Butyl rubber surrounds provide durability and deeper mid-bass impact Voice Coil: Pure Copper voice coil creates a strong magnetic field with a very thin extrusion Voice Coil Former: Kapton voice coil former is lightweight and efficiently dissipates heat Spider: Natural fiber allows flexibility while the infused epoxy gives strength during the manufacturing process Cone Material: Lightweight thermal-formed polypropylene cones enable faster midrange response Surround/Cone Coupling: The cone/surround connection utilizes a high temp adhesive which assure the cone and surround do not separate in high power uses or extremes of weather Gasket: A textured ABS gasket assures a rigid linear seal to the mounting surface Tinsel Leads: Highly conductive while remaining flexible during high power applications Cooling System: Over-coil cooling system allows air exchange over the voice coil through the spider Internal Crossover: 6 dB internal crossover integrated into the design to assure smooth midrange to tweeter frequency transitions Frame: Heavy gauge progressive-die stamped steel frames for ultimate rigidity Motor: Ferrite magnet motor creates a strong magnetic field while remaining small enough to fit nearly every application Connectors: Use spade connectors or solder direct for the best connection Tweeters: 1 inch tweeters produce clear highs while handling plenty of power without sound harsh Mounting Diameter/Cut Out: 5.59" inches Outside Diameter: 7.01" Mounting Depth/Chassis Depth: 2.13" inches

Specifications

Waterproof
No
RMS Output
60 W
Maximum Output
120W
Channels
2
Quantity
Sold as a single unit, 1
Speaker Type
2-Way Coaxial
Impedance
4 OHM
Sensitivity

Questions and answers

Is the FKB116 sold as a pair?
No. Each order is one speaker. For both front doors you need to buy two.
Do I need an amplifier to run these?
No. At 88 dB sensitivity and 4 ohms, a stock head unit can drive them. An amp helps if you want full output.
Will they fit my car?
They fit most vehicles with 6.5-inch openings and at least 2.13 inches of mounting depth. Check your door depth and speaker adapter before buying.
How do they compare with the FKB116's predecessor or pricier Formula models?
They share the Formula aluminum tweeter and polypropylene cone but sit at the entry level, with lower power handling than the component sets in the line.
What is in the box?
One 6.5-inch coaxial speaker, a grille, and mounting hardware. Speaker wire and adapters are not included.
When is the best time to buy?
Car audio runs frequent promotions around Black Friday and spring. At $33.49 at Walmart as of November 4, 2026, the price is already near the bottom of its range.
Where is the MB Quart FKB116 Formula Series 2-Way Coaxial Speakers cheapest?
At Walmart, for $33.49, 16% under what the other stores charge, as of our latest check.
What do buyers say about the MB Quart FKB116 Formula Series 2-Way Coaxial Speakers?
Rated 4.1 out of 5 from 29 ratings.
Where can I buy the MB Quart FKB116 Formula Series 2-Way Coaxial Speakers?
9 stores we checked sell it, including Walmart, mobileiGo.com, Audiosavings, eBay, Target.

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88dB
Bluetooth
5.0
Connectivity Type
Wired (Use spade connectors or solder direct)
Ports &Amp; Interfaces
Spade connectors
Control Method
App
Size
6.5 inch
Mounting Depth
2.13 in
Weight
6.5 lbs
Depth
2.1 in
Height
37.85 cm
Width
7.01 in (outside diameter)
Vehicle Type
Car
Compatible Devices
Personal Computer
Color
Black
Material
Butyl rubber (surrounds), Aluminum (dome tweeters)
Mounting Type
Wall Mount
Hardware Included
Grilles included