How deep is the mounting depth?

They are not 3" deep. There's some sites showing 3" and they are wrong. The box they come in isn't even 3". They are 1.8" deep from magnet to frame face. The tweeter sticks out maybe another 1/4 ".

The price shown is it for 2 speakers or just 1 speaker?

It’s a pair. You get 2 Speakers.

Per MB Quart: RMS POWER HANDLING 40 Watts PEAK POWER HANDLING 80 Watts SPEAKER IMPEDANCE 4 Ohms FREQUENCY RESPONSE 55Hz - 19kHz SENSITIVITY 88dB CROSSOVER POINT 6kHz CROSSOVER SLOPE 12dB MOUNTING DIAMETER / CUT OUT 3.69 OUTSIDE DIAMETER 5.39 MOUNTING DEPTH / CHASSIS DEPTH 3

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Formula 4 Inch 80 Watt 2 Way Coaxial Car Audio Speaker Pair with Built in 1 Inch Tweeters for Vehicle Sound System, Black

Product ID: 66439624

Details

Audio Output Mode
Stereo
Brand
MB Quart
Connectivity Technology
Coaxial
Frequency Response
6 KHz
Speaker Maximum Output Power
80 Watts

🎵1-inch aluminum dome tweeters for crisp highs

🔊80W peak power for booming sound

❄️Over-coil cooling system keeps performance cool

₩95256

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎶 Upgrade your ride’s soundtrack with MB Quart’s Formula 4 – where power meets precision!

POWERFUL 80 W PEAK OUTPUT - Feel every beat with crystal-clear, distortion-free sound that commands attention on every drive.
INNOVATIVE OVER COIL COOLING - Stay cool under pressure—advanced airflow design ensures consistent performance on long drives.
SEAMLESS FREQUENCY TRANSITION - Integrated 12dB crossover delivers smooth, balanced sound from midrange to tweeter for a premium audio experience.
DURABLE BUTYL RUBBER SURROUNDS - Built to withstand extreme weather and high power without compromising deep mid-bass impact.
PRECISION ALUMINUM DOME TWEETERS - Experience sharp, reliable highs that elevate your in-car audio to concert-level clarity.

The MB Quart Formula 4 Inch 2-Way Coaxial Car Audio Speaker Pair delivers 80 watts peak power and 40 watts RMS with a 4-ohm impedance, featuring aluminum dome tweeters and butyl rubber surrounds for durability and superior sound clarity. Its over-coil cooling system and integrated 12dB crossover ensure consistent, distortion-free audio performance, making it an ideal upgrade for any vehicle sound system.

Specifications

ASIN	B07D5KCPLV
Additional Features	Power Handling, Voice Coil
Antenna Location	Musical,Car
Audio Driver Type	Dynamic Driver
Audio Output Mode	Stereo
Best Sellers Rank	#109,009 in Electronics ( See Top 100 in Electronics ) #1,284 in Car Coaxial Speakers
Brand	MB Quart
Built-In Media	product, manual
Color	Black
Compatible Devices	Desktop, Laptop, MP3 Player, Projector, Smartphone, Tablet
Compatible with Vehicle Type	& SUVs, Select Cars, Truck
Connectivity Protocol	Coaxial
Connectivity Technology	Coaxial
Control Method	Voice
Controller Type	Voice control
Customer Reviews	4.5 4.5 out of 5 stars (163)
Enclosure Material	Aluminum
Frequency Response	6 KHz
Global Trade Identification Number	00806576228332
Impedance	4 Ohms
Input Voltage	12 Volts
Is Waterproof	FALSE
Item Dimensions D x W x H	17"D x 15.25"W x 9.75"H
Item Type Name	car speakers
Item Weight	1.95 Pounds
MP3 player	No
Manufacturer	MB Quart
Model Name	FKB110
Model Number	FKB110
Mounting Type	Car Mount,Coaxial
Number Of Circuits	2
Number of Audio Channels	2.0
Number of Items	1
Number of Power Levels	2
Power Source	DC
Speaker Maximum Output Power	80 Watts
Speaker Size	4 Inches
Speaker Type	Coaxial
Specific Uses For Product	Car, Musical
Subwoofer Connectivity Technology	Wired
Total Ethernet Ports	2
UPC	806576228332
Unit Count	1.0 Count
Warranty Description	1 year
Warranty Type	Limited
Woofer Diameter	5.39 Inches

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Very impressed with the quality and fast delivery. Will shop here again.

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