EM Acoustics EMS-81 compact passive loudspeaker - Manual (Page 6)

6
EMS Series User Manual
www.emacoustics.co.uk
EMS-152/EMS-152w Loudspeaker
DA-1 Ready
The EMS-152 is a high power, medium-Q performance loudspeaker designed for a variety of applications within the
live and installation audio markets, where sonic performance and dispersion accuracy are of paramount
importance. The enclosure features a high-power 15” (381mm), 4” voice coil neodymium vented LF driver and a
4” aluminium diaphragm, 2” exit compression driver on either a 60 °H x 40°V (EMS-152) or 90°H x 40°V (EMS-
152w) waveguide. Added to this is a specific cone profile to allow the dispersion of the 15” drive unit to match
that of the high frequency drive unit throughout the crossover region.
These precision components are matched by an internal UniPhase2 passive crossover network. This radical
approach to passive crossover technology achieves phenomenal frequency and phase responses without the need
for bi-amplification or external processing.
The two formats are intended to provide user-flexibility during system design – the EMS-152 is designed for array
construction whereas the EMS-152w can be used where wider coverage is required from a single enclosure – such
as centre fills or large format front fills.
Integral to the enclosure are four M10 flying points to allow suspension using a variety of different rigging
methods.
As with all other EM Acoustics fullrange products, no external processing or equalisation is required to allow the
loudspeaker to function correctly. However, for high SPL applications a high pass filter set above 40Hz is
recommended to remove unnecessary LF drive unit cone excursion. The EMS-152 can also accept the new DA-1
digital power amplifier module if required.