It checks today's price at every store, compares the alternatives and answers in about a minute.
The Rockville W8K9D2 is an 8-inch dual 2-ohm car subwoofer rated at 500 watts RMS (1,000 program, 2,000 peak) with a cast aluminum basket, a 122 oz double-stack magnet and a 2.5-inch four-layer voice coil. It is a passive driver, so it needs an external amp, and it works in sealed or ported boxes with a 7.32-inch cutout and 5.91-inch mounting depth. At $99.95 at Walmart as of November 7, 2026, it sits at the low end of its recent range, with four stores pricing it new.
In stockSold by Audiosavings
In stock
In stock
Availability unknownSold by audiosavings (99.6% positive, 867,700 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
Also available at
Store links may earn us a commission.
Lowest price we've seen: $99.95 on Nov 7 at Audiosavings. Tracked across 3 stores since Nov 7.
Owner feedback is mixed. Many praise the output and build for the money, while others say it needs more power than expected and can distort when pushed hard.
Features: Rockville W8K9D2 K9 Series 8" Dual 2-Ohm Car Subwoofer Peak Power Handling: 2000 Watts Program Power Handling: 1000 Watts CEA Rated RMS Power Handling: 500 Watts 2.5" 4-Layer ASV Voice Coils Wound with OFC Wire Made in USA This voice coil is stable up to 200 degrees celcius! The voice coil windings are made in the USA! Double Stacked 122 Oz High Quality Magnet Cast Aluminum Basket With Black Sanded Finish Makes This Sub Very Efficient And Lighter Weight Two Chrome-Plated Binding Post Terminals Black Non-Pressed Paper Cone With Beautiful Finish Our cones are ultra-stiff. They are thicker and stronger than other subs on the market making our subs able to handle more power. Thick Foam Surround Provides Incredible Sound Quality With Minimal Distortion Black Stitching Cone Reinforcement Ensures Long Life New Ultra-stiff PolyPropylene (PP) Dustcap Impedance: Dual 2-Ohm Voice Coils Vented Hole on T-yoke Enhances Heat Dissipation Special Custom Rubber Boot Magnet Covers Make the Woofer Look Nice and Protects the Magnet Custom Rockville Mounting Gasket Looks Beautiful and Makes it Easy To Mount the Subwoofer Air-Tight High BL Magnetic Motor Gap We use high grade glue that handles extremely high temperatures which allows our woofer to handle even more power than they are rated Poly cotton spider with very good elasticity Cutout Diameter: 7.32” inches Mounting Depth: 5.91” inches Frequency Response: 48 hz- 800hz 10mm T-Yoke + 10mm Washer Sensitivity: 81.2dB Sealed Enclosure Volume:0.28-0.42 Cubic Feet Vented/Ported Enclosure Volume: 0.64-0.92 Cubic Feet Weight: 18.74 Lbs. Shipping Weight: 20.95 Lbs. Shipping Box Dimensions:11.42"x 11.42"x11.81" Inches Detailed Info: Body: Non-Pressed Paper Gap Plate Inside Diameter: 67.4mm (2.65 inches) Gap Plate Outside Diameter: 145mm (5.71 inches) Gap Plate Thickness: 10mm (0.39 inch) Yoke Outside Diameter: 145mm (5.71 inches) Yoke Thickness: 10mm (.0.39 inches) Yoke Pole Diameter:60.1mm (2.37 inches) TS Parameters:
