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The Infinity Kappa 123WDSSI is a 12-inch car subwoofer built for high output with a glass-fiber cone and an oversized, aero-cooled voice coil. Its standout feature is SSI, a switch that selects 2- or 4-ohm impedance, so one sub can match a wide range of amplifiers. It suits drivers who want loud, clean bass and plan a proper enclosure and amp. Against rivals in its class, the impedance switch and cooling design add flexibility that fixed-impedance subs lack, though it needs real power and a sealed or ported box to perform.
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Lowest price we've seen: $369.95 on Nov 10 at Best Buy. Tracked across 1 store since Nov 10.
Owners describe the Kappa 123WDSSI as a loud, clean sub that takes abuse and stays composed at high volume. The impedance switch is widely liked for simplifying amp matching. Most criticism centers on the power and box it demands.
A subwoofer that puts you in the driver’s seat. Take Infinity car audio for a ride. Innovative materials and breakthrough engineering have always placed Infinity products in front of the competition. You can expect extreme output from Kappa subs so be prepared for accuracy and detail that will simply blow you away. The Kappa Series subwoofers feature SSI™ (Selectable Smart Impedance) a HARMAN-exclusive impedance selector that lets you choose a 2- or 4-ohm impedance at the flip of a switch. Their proprietary aero-cooling design keeps the voice coil cool while optimizing power handling and long-term reliability. Finally the acoustically damped glass-fiber cones have been engineered to minimize distortion and unwanted artifacts. More performance and flexibility: you get both when you step up to an Infinity Kappa subwoofer. Features: SSI™ (Selectable Smart Impedance) Aero-cooled voice coil Oversized voice coil
