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180W Peak (90W RMS) 4x6" Formula Series 2-Way 4-ohm Coaxial Car Speakers
Product highlights
• 90 watts Peak Each, 45 watts RMS Each
• Aluminum Dome tweeters
• Lightweight Thermoformed Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
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The MB Quart FKB146 is a 4" x 6" Formula Series 2-way coaxial car speaker designed to deliver strong, detailed audio performance in tight factory-fit locations. Each speaker handles 45 watts RMS (90 watts peak per pair) and features a lightweight thermoformed polypropylene cone paired with a crisp aluminum dome tweeter for improved clarity. Built with durability in mind, it includes a butyl rubber surround, epoxy-reinforced natural fiber spider, heavy-gauge steel frame, and a ferrite magnet motor. With a built-in 6dB crossover, over-coil cooling, 4-ohm impedance, and a wide 55–20,000 Hz frequency range, these speakers provide efficient sound upgrade potential with reliable installation flexibility.
Priced Per Pair
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Manufacturer:
Model Number:
FKB146
Weight:
3.00lbs
Internal SKU:
fkb146
Internal Product ID:
146211
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Great value, Great upgrade.
Replaced my rear door speakers in my 02 Silverado and got a great upgrade with these.
Verified purchase
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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:
Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.
