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The Kicker K9 is a car audio subwoofer built for high-output bass in a compact motor and frame. It uses a dual 4-ohm voice coil, so a single sub can be wired to 2 or 8 ohms and a pair to 1 or 4 ohms, which gives installers flexibility in matching an amplifier. It suits bass-heavy listeners and SPL builds that want a hard-hitting sub without stepping up to a larger frame size. Against mainstream subs it trades some low-end extension for punch and power handling, and owners of Kicker's square and round lines describe it as a loud, durable driver for the money.
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Owners of Kicker subs generally praise output and durability, and the K9 line is described as loud and hard-hitting for its size. Some note it needs real amplifier power and a good enclosure to sound its best.
This is a K9 Series 8-inch car subwoofer with dual 4-ohm voice coils. It is rated for 2000 watts peak, 1000 watts program and 500 watts CEA RMS power handling.
The cone is black non-pressed paper with black stitched reinforcement, a thick foam surround and a polypropylene dustcap. The poly cotton spider is elastic. The cast aluminum basket has a black sanded finish. A vented hole in the T-yoke helps dissipate heat.
The voice coils are 2.5" 4-layer ASV coils wound with OFC wire in the USA. They are stable up to 200 degrees Celsius. The motor uses a double stacked 122 oz magnet with a high BL magnetic gap. Rubber boot covers protect the magnet, and a custom mounting gasket helps make an air-tight mount.







