R2SUBZ and R2SUBDF - Installation Guide - Page 12
R2SUB with R2 Yoke Mounting Instructions
Normally the yoke should first be attached to the R2SUB then the entire assembly mounted to a structure. However in the
some unusual cases it may be desirable to mount the yoke and secure it in place before mounting the R2SUB to the yoke.
Depending on the situation the sequence of the following mounting procedure may have to be modified to facilitate the
work. Nonetheless the instructions and precautions about use of the hardware should still be followed.
1.
To attach the yoke to the R2SUB, first determine whether the yoke will be attached to the sides or top/bottom of
the loudspeaker. This will depend on what the yoke is to be mounted to and how the R2SUB must be oriented
when positioned for proper coverage.
2.
Once the position of the yoke is determined, remove two supplied ½-13 stainless steel mounting bolts, with the
lock, flat, and rubber washers from the mounting points where the yoke is to be attached.
3.
Position the loudspeaker within the yoke making sure that the large rubber washers sit between the yoke and the
enclosure. Be aware this is intentionallymade to be a tight fit. Screw the ½-13 x 2-
½
” (64 mm) bolts into the
mounting holes using the rubber washers, flat washers, and lock washers removed in step 2. Tighten only enough
so as to allow the yoke to move as needed for the rest of the procedure. The rubber washer has a 7/16” (11 mm)
hole so it fits quite snugly around the mounting bolts to form the weather seal for the R2SUB mounting hole. It
also provides some friction to help hold the yoke in position until completely secured.
4.
Attach the short flat end of the Contour Strap to the mounting point located at the back/center of the enclosure
bell using the bolt, rubber washer, flat washer, and lock washer supplied in the mounting point. Make sure that the
rubber washer is between the Contour Strap and the enclosure. Leave the other end (the long flat end) of the
Contour Strap temporarily unattached. Eventually this will be attached to one of the side mounting points. This
point must be on the side where the crossbar of the yoke will be positioned when the loudspeaker is in its final
mounting location and aimed properly.
5.
Mount the R2SUB and its attached yoke to the structure that will support it. If the center hole on the yoke
crossbar is used as one of the yoke mounting points you need to attach the Securing Strap to this hole at the same
time you mount the yoke to the structure that will hold the R2SUB assembly. In addition to attaching the Securing
Strap to the yoke, the supplied stainless steel ½-13 x 2-
½
” bolt, ½” flat washers, ½” lock washer and ½-13” hex
nut can be used as a yoke mounting bolt. In any case, the Securing Strap attaches to the yoke using the end of
the Securing Strap with the short bent tab and the 9/16” (14 mm) hole in it. The Securing Strap tab is positioned
on the underside of the yoke crossbar with the long end bent towards the enclosure and positioned over the
Contour Strap.
6.
After properly securing the yoke to the structure, adjust the aiming angle of the R2SUB. Once the aiming angle is
set, bend the Securing Strap against the Contour Strap. The series of holes in the Securing Strap should line up
with one of the three 5/16” (8 mm) holes in the Contour Strap. This determines where to locate the bolt in the
Contour Strap to attach the Securing Strap. Lift the Contour Strap away from the R2SUB enclosure and put the ¼-
20 x 1” (25 mm) stainless steel bolt in this hole with the bolt head between the Contour Strap and the enclosure.
Secure the bolt to the Contour Strap with one of the supplied ¼” lock washers and ¼-20 hex nuts.
7.
Attach the free end of the Contour Strap to the mounting point on the side of the R2SUB enclosure using the
½
” –
13 bolt, rubber washer, flat washer and lock washer supplied with the R2SUB mounting point. Make sure that the
rubber washer is located between the Contour Strap and the enclosure.
8.
Attach the Securing Strap to the ¼-20 bolt installed on the Contour Strap in step 8. Use the hole in the Securing
Strap nearest to the bolt when the R2SUB is at the proper aiming angle. You will have to bend the Securing Strap
towards the enclosure to put it on the bolt which is normal. First place one of the ¼” flat washers on the bolt, then
the Securing Strap on the bolt. Finish with the remaining ¼” flat washer, ¼” lock washer then ¼-20 nut.
9.
Firmly tighten the bolts holding the yoke to the R2SUB enough so seat the lock washer. Be careful not to over-
tighten as, given the size wrench that typically will be used, it is possible to apply excessive torque.
10.
Lastly ensure that all the attachment bolts for the Contour and Securing Straps are securely tightened.
Caution: Any of the mounting bolts supplied with the R2SUB that are not used for mounting must be left
in place with their rubber washers and firmly tightened to maintain the integrity of the weatherproofing.
