One Systems OPA-PTB User 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, but the
turnbuckle must always be used. The selection of the correct eyebolt will be determined
by the down tilt angle of the enclosure.

Warning: If the turnbuckle assembly is turned and the loudspeaker enclosure angle
begins to change, (if the down tilt angle begins to move toward 0 degrees vertical) then
the turnbuckle has been OVER TIGHTENED. Turn the turnbuckle until the down tilt
angle is set by the M10 thru bolt on the pole bracket, but there still should be slight
tension on the turnbuckle.

Figure 7 is a close up view of the Link assembly. Certain down tilt angles may require a
link to be “dropped” from the chain as shown below. The lower quick link is positioned in
various chain segments based on the desired degree of down tilt. The turnbuckle should
be adjusted, as described in this section.

In any position, the turnbuckle must be adjusted to allow the proper amount of tension
on the Link. The Link should never pull the loudspeaker up towards vertical. The Link
may be configured with or without the chain section and quick link, depending on the
down tilt angle of the enclosure.

Figure 7

Secondary safety cables are STRONGLY recommended and should be
secured to a structural point NOT associated with the OPA-PTB bracket or
loudspeaker enclosure. The Link assembly is NOT a secondary safety
cable.

The products referenced in this manual are in conformity with the following
standards or other normative documents: Machinery Directive 2006/42/EC

Nashville, TN U.S.A.