Other products
of this series:



– 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.

Technical Data
RMS Power Handling2200 W
Peak Power Handling8800 W
Frequency Range (-10 dB)28 Hz – 125 Hz
Nominal Impedance4 ohms
On-axis Sensitivity 1 W / 1 m103 dB SPL
Rated Peak SPL at 1 m143 dB
Enclosure MaterialBirch Plywood
Connectors2 x NL4 speakON
Dimensions (H x W x D)51.4 x 100 x 95.2 cm
20.3 x 39.4 x 37.5 in
Weight87 kg (192 lb)
SF-218 2D Drawing

900 KB

Photo SF-218
High Resolution, 2 MB

Subscribe to newsletter

Distributor search