Package Includes: (2) Rockville W15K9D4 15" 5000W Peak Dual 4-Ohm K9 Series Car Subwoofers Massive Power Handling: Each sub delivers 5000W peak, 2500W program, and 1250W RMS power. The USA-made 3" 4-layer black aluminum voice coil withstands up to 240 degreeC, providing consistent performance under intense power loads. Ultra-Stiff Construction: Features a cast aluminum basket with a black sanded finish and non-pressed paper cone reinforced with red stitching. Thick foam surround and Nomex spider ensure long-lasting durability, strength, and minimal distortion. High-Performance Design: Double-stacked 190 oz magnet and vented T-yoke deliver efficient cooling and heat dissipation. The ultra-stiff polypropylene dustcap enhances cone rigidity for punchy bass response and accurate sound reproduction. Precision Engineering: Dual 4-ohm voice coils with chrome-plated binding posts allow flexible wiring options. Optimized motor gap and airtight construction maximize output in both sealed (1.7-2.9 cu. ft.) and ported (2.7-3.85 cu. ft.) enclosures. The Rockville W15K9D4 K9 Series 15" Dual 4-Ohm Car Subwoofer (Pair) delivers extreme low-end performance, precise control, and uncompromising power handling for car audio professionals.

Each sub handles 5000W peak / 2500W program / 1250W RMS and features a 3" 4-layer aluminum voice coil made in the USA-capable of enduring up to 240 degreeC. The double-stacked 190 oz magnet and vented T-yoke enhance heat dissipation, while the cast aluminum basket reduces weight without sacrificing rigidity.

The non-pressed paper cone reinforced with red stitching, thick foam surround, and Nomex spider produce clean, distortion-free bass. The subwoofer's dual 4-ohm voice coils allow for flexible wiring configurations for single or dual setups.

With an XMAX of 30mm, this sub moves serious air, producing deep, thunderous bass across the 32Hz-1.5kHz range. It performs exceptionally in both sealed (1.7-2.9 cu. ft.) and ported (2.7-3.85 cu. ft.) enclosures.

Key Features:

(2) Rockville W15K9D4 15" 5000W Peak Dual 4-Ohm Subwoofers.

3" OFC aluminum voice coil (USA made).

Double-stacked 190 oz magnet.

Cast aluminum basket, Nomex spider, and polypropylene dustcap.

Sensitivity: 87.9dB
XMAX: 30mm.

Frequency response: 32Hz-1.5kHz.

Sealed: 1.7-2.9 cu. ft.
Ported: 2.7-3.85 cu. ft.

The W15K9D4 K9 Series subwoofers redefine durability and bass performance, giving your system the deep, accurate sound Rockville is known for-engineered for competition-level output with everyday reliability.