Description
Package Includes: (2) Rockville W8K9D4 K9 Series 8″ Dual 4-Ohm Car Audio Subwoofers rated at 2000-Watt peak and CEA-compliant RMS output, (1) Rockville RQB8 Dual 8″ Vented Subwoofer Enclosure constructed from 3/4″ MDF and finished with durable bed liner. Only these listed items are part of the official bundle configuration for this SKU.
Rockville W8K9D4 K9 Series Subwoofer Design: Each Rockville W8K9D4 subwoofer features dual 4-Ohm voice coils with CEA-rated RMS power handling and a 2000-Watt peak rating. Construction includes a 2.5″ 4-layer ASV voice coil wound with OFC wire made in the USA, a double-stacked 122-Oz magnet, cast aluminum basket, ultra-stiff non-pressed paper cone, thick foam surround, and vented T-yoke for heat dissipation during high output use.
Low-Frequency Performance And Specifications: The Rockville W8K9D4 delivers controlled bass response across a 48 Hz-800 Hz frequency range with a sensitivity rating of 81.2 dB. Design elements such as the high BL motor gap, poly-cotton spider, reinforced cone stitching, polypropylene dust cap, and chrome-plated binding post terminals support consistent signal transfer, thermal stability, and mechanical durability in vented or sealed enclosure applications.
Rockville RQB8 Dual 8″ Vented Enclosure Construction: The Rockville RQB8 enclosure is a vented dual-subwoofer design built from 3/4″ MDF and finished with a rugged bed liner coating. It provides 1.0 cubic foot of air space per subwoofer and is tuned to 40 Hz for enhanced low-frequency output. High-quality spring-loaded terminals ensure secure wiring connections while the vented design supports efficient airflow and reduced cone stress.
System Compatibility And Installation Flexibility: This Rockville subwoofer and vented enclosure combination is designed for users building custom car audio bass systems requiring dual 8″ subwoofers with vented airflow characteristics. The enclosure dimensions of 13″ x 28″ x 13″ accommodate standard vehicle installations, while the dual 4-Ohm voice coil configuration allows flexible wiring options to match a wide range of mono amplifiers.
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