One Systems OPA-PTB - Manual (Page 5)

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The wall bracket section should now be mounted to the wall surface. The OPA-PTB has
10 mounting holes for allowing fasteners to join the bracket and loudspeaker assembly
to the mating surface.
IT IS NECESSARY TO USE ALL MOUNTING HOLES TO ENSURE A SAFE AND
SECURE MATE TO THE ASSOCIATED SURFACE!
All fasteners associated with the mounting of the OPA-PTB bracket and loudspeaker
assembly to the mating surface are the responsibility of others. The design and
structural capacity of mating surfaces (such as walls) vary greatly and specific fasteners
are designed for use with specific mating surfaces. On Point Audio does not
recommend any mating fasteners and strongly urges the installer to consult with one
experienced in suspension of products from the specific mating surfaces and the
appropriate choice of fasteners for those specific surfaces.
The wall bracket section should be secured firmly to the mating surface using the
appropriate fastening system. The fastening system should be determined by the
structure of the mating surface.
IT IS CRITICAL THAT THE MATING SURFACE BE CAPABLE OF SUPPORTING THE
LOAD OF THE OPA-PTB BRACKET, THE OPALINE OR OPA-12 LOUDSPEAKER
AND ALL SUSPENSION HARDWARE, AS WELL AS PROVIDING THE PROPER
SAFETY FACTORS. DO NOT ATTEMPT TO SUSPEND THE BRACKET AND
LOUDSPEAKER UNTIL THE STRUCTURAL CHARACTERISTICS OF THE MATING
SURFACE ARE UNDERSTOOD. DO NOT INSTALL THE OPA-PTB BRACKET AND
OPALINE OR OPA-12 LOUDSPEAKER IF THE MATING SURFACE IS NOT CAPABLE
OF SUPPORTING THE ENTIRE ASSEMBLY WEIGHT, AS WELL AS PROVIDING
THE REQUIRED SAFETY FACTORS!
After the OPA-PTB wall section of the bracket is securely mounted to the mating
surface, the loudspeaker section should be mounted to the OPALine or OPA-12
loudspeaker using the fasteners supplied. (DO NOT SUBSTITUTE FASTENERS) The
loudspeaker mount section of the bracket is shown in figures 3a and 3b.
Figure 3a Loudspeaker bracket