SEAS Design SL26R – XM003 10" Passive Radiator

The SEAS Extreme SL26R – XM003 10" Passive Radiator is a premium solution for achieving deep, controlled bass extension without the need for a ported enclosure. Designed for audiophiles and custom speaker builders, this passive emitter allows you to tune your system for powerful low-frequency response while maintaining a compact cabinet size. It is ideal for use in high-end home theatre subwoofers, two-channel stereo systems, or any application where precise bass management is critical.

From a technical standpoint, the SL26R boasts a remarkable linear excursion (Xmax) of 28 mm, enabling high-displacement performance that delivers authoritative, distortion-free bass. With a resonance frequency (Fs) of just 18 Hz and an equivalent volume (Vas) of 50 litres, it is well-suited to sealed enclosures where extended low-end output is desired. The mechanical compliance of the suspension (Cms) is rated at 0.29 mm/N, ensuring smooth, controlled cone movement. Eight mounting holes provide secure installation, while the robust construction reflects SEAS’s commitment to quality and longevity.

Whether you are upgrading an existing design or building from scratch, this passive radiator from the Extreme series offers a reliable and effective way to achieve the deep, articulate bass that discerning listeners demand.