EM Acoustics i-12 compact ULF subwoofer - Manual (Page 9)

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i-Series Subwoofers User Manual
www.emacoustics.co.uk
MOUNTING & RIGGING OPTIONS
Ground Stacking
Ensure that the floor or stage surface can withstand the weight of the system.
Wherever possible, avoid high stacks and use ratchet straps to secure loudspeakers together. Please also
remember that vibrations from subwoofer systems can shake other loudspeakers out of place, which may
present a toppling hazard. The use of ratchet straps and non-slip material is recommended to prevent this.
Rigging and Suspension
WARNING: The overhead suspension of loudspeakers is a very serious issue with potentially lethal
consequences should anything go wrong. Rigging should only be carried out by experienced
personnel following safe working practice. Should you be in any doubt whatsoever, please contact
your local dealer who will be able to refer you to a suitable rigging company.
Rigging Hardware & Accessories
The i-8 contains sixteen M10 threaded fixings around the enclosure, to enable suspension using forged shoulder
eyebolts with a minimum thread length of 20mm. With any suspension method, a second anchor point should be
used as a safety. The i-12 has no dedicated rigging options, as it is designed to be ground stacked only. If you
have any special requirements, please contact your local EM Acoustics representative or else email
[email protected] with your enquiry.
Under no circumstances should the mounting points of one enclosure be used to suspend another
enclosure below it. EM Acoustics are in no way responsible for the failure of incorrectly rigged
systems. This information relates specifically to the rigging techniques for the i-Series enclosures
only. If you are in any doubt about safe practices for rigging loudspeakers, please contact your local
EM Acoustics dealer who will be able to advise you.
Permanent Installations
Any installation (permanent or temporary) must be securely attached to the structure of the building using chain,
steel wire or web straps that are certified and load rated for the loudspeaker system. Consideration must be taken
when determining the loading on the structure to include loudspeakers and rigging hardware, and the appropriate
safety factor can then be decided upon. If you are in any doubt whatsoever, please contact your EM
Acoustics dealer who will be able to refer you to an experienced rigging company. A reputable rigging organisation
should also be able to advise on legislation regarding safety factors for suspended systems of this type.