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SiS218 - dual 18-inch subwoofer
Main Feature

ALESIS SIS-218 is a high power, high efficiency subwoofer. The 18-inch woofer consists of two 4-inch (100mm) high temperature resistant voice coil. A rated power of 1600W giving it a 360 degrees diffusion angle with a maximum 140dB SPL. Full range IS series such as IS-10, IS-12, IS-15, IS-215 covers ultra-low-frequency range giving it a strong bass effect.

This system is design to enhance and enlarge the low-frequency part of the sound system. Applications for multi-purpose hall, auditorium, bars and other live performances, etc., are ideal.

Technical Parameters
UnitLF 2×18" woofer (101.6 mm voice coil)
Frequency range30 Hz - 1350 Hz
Frequency response (-6dB)32 Hz - 1300 Hz
Sensitivity102 dB / 2.83V/1m
Sound pressure level (SPL)134 dB (continuous) 140 dB (peak)
Speaker PowerRated power 1600 w RMS
Music Power 3200 w
Peak power 6400 w
Dispersion angle360 degrees
Normal impedance
Signal connector2 x Speakon NL4MP (1+ / 1- , 2+ / 2- )
Size (L×H×W)1160 mm × 580 mm × 960 mm
Weight97 kg
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