Rockville
W15K9D4
W15K9D4
15" 1250W RMS Dual 4-Ohm Car Subwoofer, Black
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Features
- 5000W peak power delivers thunderous bass and clarity
- 3" USA-made OFC voice coil for premium performance
- Fits sealed or vented enclosures for flexible installation
- Cast aluminum basket and chrome terminals for premium build
- Includes custom mounting gasket and rubber boot magnet cover
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What's Included in the box
- Rockville W15K9D4 K9 Series 15" Dual 4-Ohm Car Subwoofer
- Custom Rockville Mounting Gasket
- Chrome-Plated Binding Post Terminals
- Custom Rubber Boot Magnet Cover
SKU: SKU: W15K9D4
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Product Description
Features
Extreme Bass Output
5000W peak power and a 3" USA-made OFC voice coil deliver deep, resonant lows for immersive car audio.
Durable Construction
Ultra-stiff cone, thick foam surround, and red stitching provide long-lasting performance and reliability.
Flexible Installation
Compatible with sealed or vented enclosures, the included mounting gasket ensures an air-tight, secure fit.
Premium Components
Cast aluminum basket, double-stacked magnet, and chrome-plated terminals offer superior build quality and efficient power handling.
Sophisticated Aesthetics
Black sanded finish and custom rubber boot magnet cover add a refined, modern look to your audio system.

Technical Specifications
- Type of Product 15" Dual 4-Ohm Car Subwoofer
- Peak Power Handling 5000 Watts
- Program Power Handling 2500 Watts
- CEA Rated RMS Power Handling 1250 Watts
- Voice Coil 3" 4-Layer Black Aluminum Former, OFC Wire (USA Made)
- Magnet Double Stacked 190 Oz
- Basket Cast Aluminum, Black Sanded Finish
- Cone Black Non-Pressed Paper, Ultra-Stiff
- Surround Thick Foam
- Dust Cap Ultra-Stiff Polypropylene (PP)
- Terminals Two Chrome-Plated Binding Posts
- Impedance Dual 4-Ohm Voice Coils
- Vented Hole On T-yoke for Heat Dissipation
- Mounting Gasket Custom Rockville, Air-Tight Fit
- Magnetic Motor Gap High BL
- Glue High Grade, High Temp
- Spider Nomex, Tear Resistant
- Cutout Diameter 14.09"
- Mounting Depth 8.23"
- Frequency Response 32 Hz – 1.5 kHz
- T-Yoke + Washer 10mm + 10mm
- Sensitivity 87.9dB
- Sealed Enclosure Volume 1.7 – 2.9 Cubic Feet
- Vented Enclosure Volume 2.7 – 3.85 Cubic Feet
- XMAX 30mm
- Weight 34.17 lb
- Shipping Box Dimensions 17.72" x 17.72" x 12.4"
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Support
Impedance Vs Frequency
K9 SUBWOOFERS REAL WORLD TESTS & EXPLANATIONS