Infinity Kappa Series 12" subwoofer with selectable 2- or 4-ohm impedance - Car Audio

Marsoni

M251S

$1797.50

Get it in 3 business days with 1 day shipping. Friday, May 29

Infinity Kappa Series 12" subwoofer with selectable 2- or 4-ohm impedance - Car AudioInfinity Kappa Series 12" subwoofer with selectable 2 or 4 ohm impedance 12" subwoofer with selectable 2 or 4 ohm impedance coated glass fiber cone with rubber surround steel basket terminals accept up to 8 gauge speaker wire frequency response: 25 175 Hz power handling: 500 watts RMS (1500 watts peak power) sensitivity: 92 dB top mount depth: 7. 008" cutout diameter: 11. 195" sealed box volume: 1. 3 cu. ft. ported box volume: 2. 5 cu. ft. grille not

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Perfect for my 2016 Mazda3. I am a young female with zero tools and zero knowledge about cars. My dealer was asking over $60 to change these out, and after a 5-minute course at YouTube University, I was able to do everything myself in under 15 minutes. It’s my crowning achievement of 2026. I recommend gloves when you go to change out the engine and make sure it’s wiped out and cleaned before you put the new one in! But other than that, it’s honestly just popping a few things out, changing the filters, and then popping them back into place. They look almost identical to the filters that were already in there. There was no wrestling with making them fit because they just slid easily into place. Great buy and unbeatable price if you have a few minutes to spare to do it yourself!

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Reviewed in the United States on April 11, 2026