4
Suspension
The LF-4215-F and the LF-4215-8F enclosures feature 16 load-rated attachment points. As shipped from the factory, each attachment point has a bolt
installed to retain the air-tight design of the enclosure. Never operate the loudspeaker with the attachment points open (unsealed) as it will degrade
the performance of the product.
The LF-4215-F, LF-4215-8F, MH-1075C-F and MHV-1090F have the exact same external dimensions and attachment points. They can be supported
individually or as a group, depending on what works best for the application. The boxes can be arrayed vertically and horizontally. When paired
together, it is recommended that the mounting structure connects both boxes to the suspension system rather than suspending the boxes from one
another. Commercially available uni-strut or other custom fabricated brackets can be used.
Suspending the system from the top rear attachment points results in a slight down angle that may be close to the desired aiming for many
installations. The bottom attachment points can be used for a pull-back cable to fine tune the tilt of the system.
Before placing, installing, rigging, or suspending any speaker product, inspect all hardware, suspension, cabinets, transducers, brackets and associated
equipment for damage. Any missing, corroded, deformed, or non-load rated component could significantly reduce the strength of the installation or
placement. Any such condition severely reduces the safety of the installation and should be immediately corrected. Use only hardware which is rated
for the loading conditions of the installation and any possible short-term, unexpected overloading.
Never exceed the rating of the hardware or equipment.
Consult a licensed, professional engineer regarding physical equipment installation. Ensure that all local, state and national regulations regarding the
safety and operation of loudspeakers and related equipment are understood and adhered to.
ARNINNG!:
Ensure all attachment points are installed and correctly tightened in order to maintain enclosure’s rated strength.
Additionally, air leaks resulting from missing hardware will degrade the loudspeaker’s performance. Use only QSC’s M10 forged
shoulder eye bolts. Contact QSC Technical Services department for complete information.
— Figure 3 —
M10 Attachment Points
