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The Kenwood KFC-XW800F is an 8-inch shallow-mount subwoofer built for tight spaces: behind a truck seat, in a slim door or a small sealed box. It handles 150 W RMS (600 W peak) at 4 ohms and plays down to about 40 Hz, with a 78 dB sensitivity that means it needs a real amplifier to get loud. Its high QTS of 0.812 suits sealed enclosures rather than ported ones. Compared with full-depth 8-inch subs it trades some output and low-end extension for a thin mounting depth, and reviewers treat it as an easy upgrade for factory systems rather than a bass monster.
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Lowest price we've seen: $250.00 on Nov 9 at Abt Electronics. Tracked across 1 store since Nov 9.
Owners describe it as a space-saving sub that adds usable bass to factory systems without a big box. Most praise the shallow fit and clean sound; some find output limited and say it needs more amplifier power than expected.
