One Systems PM4-M V4 - Manual (Page 10)

The assembly may be configured with any combination of turnbuckle, chain link
sections and quick link in order to achieve the proper tension on the system. In
certain situations only the turnbuckle will need to be used.
Figure 6 shows the loudspeaker assembly (312HC) and Link in a 0 degree
vertical orientation. The assembly may be configured with any combination of
turnbuckle, chain link sections and quick link in order to achieve the proper
tension on the system. In the image below there is one turnbuckle (always
required) and there are three quick links. The lower eyebolt on the back plane of
the PM4-M may be used for the 112HTH and 212HC.
Figure 6
Angles other than 0 degrees from vertical require the stainless steel chain links to
be inserted as shown in Figures 7 and 8 below.
Figure 7