0 – the mse-218sp subwoofer – EM Acoustics MSE-218SP self-powered subwoofer User Manual
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Page 8 of 20
MSE-218SP User Manual
v1.1 February 2013
2.0 – The MSE-218SP Subwoofer
The MSE-218SP is the self-powered variant of the MSE-218 loudspeaker, and as such 
follows all the same principles in design and operation. The MSE-218SP is designed to be 
a reliable, rugged subwoofer that will stand up to the rigours of use both in fixed 
installations and touring applications. 
The reflex design utilizes a pair of powerful 4.5” voice coil 18” (457mm) neodymium LF 
drive units in an incredibly rigid and rugged enclosure. Various features have been 
incorporated to assist in use on the road – ergonomically-placed handles, touring skids 
and stacking recesses, tour-grade castors and M20 threaded flange adapters for mounting 
fullrange products along with the subwoofer. 
The MSE-218SP subwoofer is designed and manufactured in our UK headquarters, and 
every unit is rigorously tested before they leave the factory. 
