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MB Quart FKB113

180W Peak (90W RMS) 5.25" Formula Series 2-way 4-ohm Coaxial Car Speakers

MB Quart
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• 90 watts Peak Each, 45 watts RMS Each
• 1" Aluminum Dome tweeters
• Thermoformed Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Learn more about the fkb113
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Description


MB Quart brand icon

Authorized dealer

Product Details:

  • 5-1/4" Formula Series 2-way Coaxial Car Speakers
  • Power Handling:
    • Peak: 180 watts per pair / 90 watts each
    • RMS: 90 watts per pair / 45 watts each
  • Thermoformed Polypropylene cone material with natural fiber spider
  • Butyl Rubber speaker surround with high-temperature adhesive
  • 1" Aluminum Dome tweeters
  • Pure copper voice coil with Kapton former
  • Over-coil cooling system allows air exchange over the voice coil through the spider
  • Integrated 6dB crossover
  • Heavy gauge progressive-die stamped steel frames
  • Ferrite magnet motor structure
  • Top-mount Depth: 2"
  • Cutout Dimensions: 4.53"
  • Impedance: 4 ohm
  • Frequency Response: 60 - 20,000 Hz
  • Sensitivity: 88 dB
  • Authorized Internet Dealer
  • MFR #: FKB113
  • 1-year Manufacturer's Warranty

  • Priced Per Pair


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Specifications & Details


Speaker Specifications
Series
Formula Series
Priced Per
Pair
Number of Speakers
2
Speaker Size
5-1/4"
Design
2-way Coaxial
Tweeter Design
Dome
Tweeter Size
1"
Tweeter Composition
Aluminum
Woofer Composition
Thermoformed Polypropylene
Woofer Surround
Butyl Rubber
Peak Power Handling
90 watts
RMS Power Handling
45 watts
Total PEAK Per Pair/Set
180 watts
Total RMS Per Pair/Set
90 watts
Sensitivity
88 dB
Frequency Response
60 - 20,000 Hz
Impedance (Per Voice Coil)
4 ohm
Shallow Mount Installation
No
Magnet Type
Ferrite
Top-Mount Depth (Mounting Depth)
2"
Bottom-Mount Depth
2.48"
Cutout Dimensions
4.53"
General specifications
Hi-Res Certified
No
Color
Black
Speaker Grilles
Yes
Includes Damping Kit
without Damping Kit
What is in the box?
Paperwork
User manual
WITB: Speakers
Speakers (2)
Grilles (2, attached)
Mounting screws (8)
Mounting clips (8)
Speaker connection cables (2)
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

FKB113

Weight:

3.20lbs

Internal SKU:

fkb113

Internal Product ID:

146215

Customer Ratings & Reviews



5 star
75%
4 star
25%
3 star
0%
2 star
0%
1 star
0%



Durability
4.7
Value
4.7
Features
4.7
Design
5
Usability
5

Customer Reviews

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By Michelle on October 20, 2023 Checkmark Icon Verified purchase

7 found this helpful Helpful?


Good Little Speakers!

These are a great budget 5.25" option and they were on massive sale! MB Quart does it again!

By Kyle on September 30, 2024 Checkmark Icon Verified purchase
1992 Ford Ranger

1 found this helpful Helpful?


By Jordan on August 10, 2024 Checkmark Icon Verified purchase
1999 Pontiac Grand Prix

1 found this helpful Helpful?


By Nick on May 18, 2025 Checkmark Icon Verified purchase


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