Dayton Audio UMII8-22 Ultimax II DVC Subwoofer

The Dayton Audio UMII8-22 Ultimax II DVC Subwoofer is a remarkable 8-inch driver engineered to deliver deep, accurate low-frequency extension from surprisingly compact enclosures. As part of the renowned Ultimax II series, this subwoofer sets a new standard for performance in its class, offering audiophile-grade bass that belies its modest footprint.

This subwoofer is ideally suited for high-quality home theatre systems and music-focused audio setups where space is at a premium but bass performance cannot be compromised. Whether you are building a sealed subwoofer for tight, articulate low end or a ported design for greater output, the UMII8-22 excels in both applications. Its dual voice coils provide flexible wiring options, allowing for 2 or 8 ohm loads to match a wide range of amplifiers.

Technically, the UMII8-22 is a powerhouse. With an impressive 18mm of linear excursion (Xmax) and a displacement volume (Vd) of 36, it moves substantial air for its size. The driver boasts a sensitivity of 84.1 dB (1m/2.83V) and a total Q (Qts) of 0.75, ensuring controlled, accurate response. The 8-inch nominal diameter (203.2mm) fits a cutout of 184.7mm, with a mounting depth of 143.4mm and eight mounting holes for secure installation. The voice coil inductance (Le) is a low 0.75 mH, contributing to excellent transient response.

In summary, the Dayton Audio UMII8-22 Ultimax II DVC Subwoofer is a compact yet formidable solution for those seeking reference-level bass without sacrificing valuable space.