EM Acoustics EMS-81 compact passive loudspeaker User Manual
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EMS Series User Manual
www.emacoustics.co.uk
EMS-215/EMS-215i Subwoofer
DA-1 Ready
The EMS-215 is a compact, powerful subwoofer system designed to extend the low frequency performance of
EMS-81 and EMS-121 based systems. Through the use of a quasi-bandpass design, the enclosure size is kept to a
minimum to allow ease of use in installations where space is a premium.
It features a pair of high power 15” (381mm) LF drive units, each in their own vented chamber. Both drive units
then fire through a single exit, located behind the foam grille. For ease of transportation in portable applications,
the EMS-215 is fitted with four heavy duty castors and recessed handles. Three polemounts are also fitted to allow
the mounting of EMS-81 or EMS-121 enclosures above the subwoofer, in two different orientations.
An active crossover is required to set a low pass filter for correct operation, set at any point below 150Hz. A
24dB/Octave Linkwitz-Riley filter slope is recommended. For demanding applications, a 30Hz high pass filter is
recommended to increase drive unit headroom however this is not essential for normal operation.
The EMS-215i is the dedicated installation version of the EMS-215 with no handles, wheels or polemounts, and
with a single NL4MPR connector and a four-way barrier strip instead of two NL4MPR connectors. The EMS-215 can
also accept the new DA-1 digital power amplifier module if required.