– High performance subwoofer system for external amplification
– Two new 18UXN long-excursion loudspeakers
– Front loaded cross-fire configuration
– Solid Birch plywood construction
The SF-218 is a bass-reflex subwoofer system that makes use of two newly developed 18UXN transducers. The loudspeakers incorporate state-of-the-art features such as a 4″ sandwich split winding voice coil, a remarkable 52 mm peak-to-peak excursion, and a powerful FEA optimized neodymium magnet assembly. Thanks to the double silicon spider, the 18UXN controls the moving mass with high linearity. An aluminium demodulating ring benefits lower distortion and the effective ventilation of the voice coil gap provides for a high thermal rating, and reduced power compression. The SF-218 subwoofer system has program power handling capacity of 4400 Wprogram and is capable of producing a maximum peak SPL of 143 dB.