Rockville W65K9D4 6.5-inch Dual 4-Ohm Car Subwoofer | 1000W Peak, CEA-Rated, OFC Voice Coils

Compact power for car audio enthusiasts

The Rockville W65K9D4 delivers serious bass in a 6.5 inch package. With 1000 watts peak, 500 watts program, and 250 watts RMS (CEA rated), this subwoofer is designed to add depth and impact to a wide range of music styles without occupying a large footprint.

Its compact size makes it a versatile upgrade for sealed or ported enclosures, helping you achieve fuller low end in cars with limited space. The result is punchy, controlled bass that complements vocals and midrange detail rather than overwhelming them.

Engineered for reliable, high-temperature performance

The W65K9D4 uses a 2 inch 4-layer ASV voice coil wound with USA-made OFC wire. These coils are engineered to tolerate high heat up to 180 °C, supporting consistent performance during extended listening sessions and demanding playback scenarios.

• 2" 4-layer ASV voice coils with OFC wire for stable operation under heat
• Thermal resilience helps maintain bass clarity as the volume rises

Power, magnetism, and durability you can feel

A double-stacked 66 oz magnet with a high BL motor gap drives tight, confident bass response. The cast aluminum basket keeps the structure light and efficient, while a black non-pressed paper cone, thick foam surround, and black stitching balance durability with clean sound reproduction.

• Double 66 oz magnet for strong, precise bass
• Cast aluminum basket minimizes weight while maximizing efficiency
• Durable cone construction with reinforced surround for longevity

Clear specs for flexible installations

Designed to pair with a variety of enclosures, the W65K9D4 features an 82.1 dB sensitivity, a frequency range of 52 Hz to 800 Hz, and a mounting depth of 4.17 inches. It includes a polypropylene dustcap, poly cotton spider, and chrome-plated terminals for reliability and style.

In practice, this subwoofer fits in many compact builds and can be dialed in to emphasize deep bass without sacrificing midrange clarity. Whether you’re building a custom install or upgrading an existing system, the W65K9D4 offers a blend of power, precision, and reliability.

Key specs at a glance

• Power: 1000W peak, 500W program, 250W RMS (CEA rated)
• Coils: 2" 4-layer ASV with USA-made OFC wire, heat tolerance up to 180 °C
• Magnet: Double-stacked 66 oz with high BL motor gap
• Basket: Cast aluminum for light weight and efficiency
• Frequency response: 52 Hz – 800 Hz
• Sensitivity: 82.1 dB
• Mounting depth: 4.17 inches
• Cones and surrounds: Black non-pressed paper cone, thick foam surround