Advertisement
jack plates are used (figure 4a) will accommodate two pairs of
speakers. So a three gang "old work" J-box will provide termination
for six rooms or six pairs of speakers at the head-out point (figure
4b). For the volume controls use "old work" single gang mounting
rings (figure 2b).
Following the example of six rooms, obtain:
One 3 gang "old work" J-box for the head-out (figure 1b)
Six "old work" single gang mounting rings (figure 2b) for the
volume controls
2.
Use a stud finder (figure 15) to locate the wall studs.
3.
Cut a hole in the drywall the proper size to accept the "old work" J-
box (see section 5c Existing Construction).
4. Determine the approximate locations for volume controls and
speakers in each room. Each time you evaluate locations for volume
controls and speakers, you must determine access. From the attic and
basement crawl spaces, look for wire, plumbing, ducting, etc. above
and below these locations.
Be sure to ascertain the access between all wire paths (head-out to
volume controls and volume controls to both respective speakers). It
is quite possible that an obstruction could be present at some point
between them such as a concrete wall, etc. If you do encounter a
concrete wall as an obstacle, you should be able to core or drill it.
5.
Once you determine access room by room from the head-out to the
desired APPROXIMATE volume control and speaker locations,
you must then determine their EXACT locations.
a.
Use a stud finder (figure 15) to locate the exact locations of the
studs, joists or trusses, whichever the case may be. You do not
want to cut the hole in a location where the stud, truss, etc.
intersects the hole. The hole you cut for the speakers must be a
minimum of 1" away from the stud, joist or truss (figure 8).
This is to accommodate the flip-out cam nuts that secure the
speaker to the drywall. If the mounting hole is any closer, the
cam nuts will not be able to flip outward into position.
b.
Then use the cut-out template supplied with your speakers to
stencil the cut-out on the drywall with a pencil. Use a level
(figure 19) to ensure template is not askew. Two thumbtacks
per template can be used to hold it in place while you trace
around it. If you use only one thumbtack the template will
rotate, so use two.
14
Advertisement
