User manual

Page 7 of 11
MSE-218 User Manual
v1.0 February 2013
4.0 – MSE-218 subwoofers in use
4.1 - System Overview
MSE-218 subwoofers can be used either in landscape or portrait format, depending on space requirements.
Landscape format is recommended as the touring skids on the underneath will protect the cabinet finish, and
the stacking recesses can be used to add extra stability when stacking multiple units.
4.2 – Stacking MSE-218SP Enclosures
The touring skids and stacking recesses (on the bottom and top of the enclosure respectively) are intended to
add extra stability to MSE-218 stacks. Wherever possible, the enclosures should be used in landscape format
to use these skids and recesses, as the skids will protect the paint finish. The placement of the skids allows
the subwoofers to be stacked with drive units facing either forwards or backwards to enable cardioid array
creation.
4.3 – Creating Cardioid Arrays
By assembling a stack of three MSE-218 subwoofers, with the central unit facing
backwards, a cardoid subwoofer array can be created which offers significant
low frequency rejection to the rear and sides of the array. When using the MSE-
218 in this way, the settings for the front and rear-firing subwoofers will be
different. Please contact EM Acoustics for advice on appropriate
settings, as these will depend on the amplifier and processors used.
When using cardioid arrays, ensure at least 1 metre clearance is left behind the
array between the subwoofers and any walls or other hard surfaces.
4.4 – Mounting fullrange products above the MSE-218
IMPORTANT SAFETY CONSIDERATIONS
Please pay careful attention when creating stacks of MSE-218 subwoofers or mounting fullrange products –
either as stacks or using the M20 flange adapters. Ensure that the instructions in this manual are followed
correctly – MSE-218 loudspeakers are heavy and incorrect use could result in injury. Ensure that the floor
where the system is going to be placed is strong enough to withstand the total system weight placed upon it.
When assembling stacks of subwoofers, the use of ratchet straps to secure both the subwoofers and any
fullrange loudspeakers stacked above is strongly recommended to reduce the risk of loudspeakers being
shaken off the subwoofer and falling.
To use the M20 threaded flange adapters, use a telescopic distance pole such as the EM Acoustics DP-01.
Screw the threaded end into the flange adapter, making sure it is screwed in completely. Then, carefully lift
the fullrange loudspeaker onto the pole.