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The Rockville K5 W8K5S2 is a passive 8-inch car subwoofer rated at 200 watts RMS and 800 watts peak, wired at 2 ohms. It is sold as a single driver and works in either a sealed or ported box, so it suits shallow-mount and small-space builds. At $74.95 at Rockville Audio as of November 6, 2026, it sits at the low end of its recent price range and is one of the cheapest 2-ohm 8-inch subs you can buy new.
In stock
In stock
In stockSold by audiosavings
Lowest price we've seen: $74.95 on Nov 6 at Audiosavings. Tracked across 3 stores since Nov 6.
Owners rate it 4.6 out of 5 across 24 ratings, and the pattern is value: buyers say it delivers more bass than the price suggests in small enclosures. Complaints center on output limits and the gap between the 800-watt peak claim and the 200-watt RMS rating.
