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MSE-118 Quake User Manual
www.emacoustics.co.uk
QUAKE SUBWOOFERS IN USE
The Quake subwoofer is designed to be a high performance, world class subwoofer product. You can achieve
excellent results with your Quakes, however this section of the manual is vital to ensure you get the best out of
them. Please read it carefully, and should you have any questions please do not hesitate to contact either your
local EM Acoustics representative or contact us directly at
.
Stacking
There are two basic possibilities when it comes to stacking Quakes – which one you choose depends on stage
space, how many Quakes you are using and what you want out of them.
Fig.1 shows the traditional, “butterfly” method of stacking. In this way, you have a very stable platform – the
locking feet on the Quake assist with this – with a large area for arraying mid/high enclosures. Obviously, two
people are required to array Quakes in this way. With the horns close-coupled in this manner, a four-stack of
Quakes provides surprisingly strong pattern control characteristics, with good front-to-back rejection. This format
also offers maximum SPL from four Quakes.
Fig.2 shows the “end-up” approach, which provides a different sonic performance and footprint. Stacking Quakes
in this way gives slightly less maximum SPL than the “butterfly” method, but the dispersion is wider and the
response slightly smoother. If you don’t require the Quake’s maximum output, this method will give a more “hi-fi”
response. It is also considerably easier to set up with few crew – one person can easily array Quakes in this way.
Whichever method you choose for arraying your Quakes, it is strongly advised that you sit them on a solid floor
rather than a raised stage. Although the enclosure is extremely rigid, the pressure inside the horn is such that the
enclosure will vibrate. On a flexible stage, some of this energy will get dissipated by the stage. Placing them on a
solid concrete floor will ensure that as much power as possible goes to your audience.
