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Mount the Speakers
Insulate the Cavity
If the speaker is installed in a ceiling, it is best to lay a
sheet of unfaced fiberglass insulation over the
speaker. If it is installed in a wall, use the following
insulation instructions:
After the wallboard, or sheetrock, is installed, and
before installing the speakers, line the inside back of
the wall cavity by pushing unfaced fiberglass insulation
through the cutout hole. Use enough to adequately fill
the cavity; even a couple of square feet of insulation is
better than none. If the insulation is paper or foil
faced, position the paper or foil away from the
speaker.
Brace the Cavity
If possible, ask the drywaller to use extra screws and
to glue the drywall to the studs around the cavity into
which the speaker is being installed. An additional bead
of glue along the interior junction where the drywall
meets the studs will help reinforce the enclosure. The
idea is to make the enclosure as rigid as possible. If
you are doing the work yourself and are retrofitting,
reach inside the hole cut for the speaker and put a
bead of glue everywhere the drywall meets the studs.
Wood glue works well for this.
Unfinished Walls (New Construction)
Your new Knoll in-ceiling speakers feature an integral
mounting system for mounting into ceilings and walls.
An optional (not supplied) BBC6 or BBC8 pre-
installation bracket will serve as a guide for the
drywaller when cutting holes for in-wall speakers in
new construction installations. Since Knoll in-ceiling
speakers feature an integral mounting system, a
separate bracket is not necessary. The pre–installation
bracket provides a hole pattern for the speaker in the
drywall. It is stapled or screwed to studs or joists so
that the hole opening is in the desired speaker location
after the drywall is installed.
Finished Walls (Retrofit)
With the integral mounting system, the speaker can be
installed directly into existing walls or ceilings. Once
the hole is cut and the wire is installed, the speakers
can be installed very quickly.
First determine that the area is free of obstructions
such as pipes, conduit, or heating and air returns. Next
locate the studs/joists nearest to your desired
speaker location. We always suggest using a good stud-
finding tool to locate studs.
Cutting the Hole
The SD652 and SE650 speakers require a round hole
cut out diameter of 8-1/4". The SE800 requires a cut
out diameter of 9-3/4". There must also be enough
clear space within the wall to house the speaker
(See SPEAKER SPECIFICATIONS for mounting
depth). There must be enough drywall around the hole
for the integral mounting system feet to grab onto
(1/2" to 1-1/4" is needed). A punch out template for
cutting the hole is provided with speaker packaging.
Position the template where the speaker is to be
located and pencil an outline on the wall or ceiling. In
the center of the circle, make a small hole with a
drywall saw. It is always best to start with a very small
hole just to make sure there are no obstructions
behind the wallboard. Cutting the wallboard, at first,
at a 45-degree angle will allow you to make a fairly
simple repair with drywall patch if your earlier
obstruction survey was wrong. This way, if repairs are
necessary, the cutout piece of wallboard will not fall
through the hole. Instead, it will be held flush with the
wallboard by the 45-degree cut, and repair can be
made easily. After checking for obstructions, carefully
cut the retrofit hole into the wall/ceiling at the
location where the speaker is to be mounted, cutting at
a 90-degree angle to the wall surface.
Paint the Speakers
Always paint the grills and flange separately. Speaker
flanges and grills can be painted before installation,
which will eliminate the "paint scar" if the speaker
needs to be removed for service. Speakers may also be
painted after the speaker is mounted into the wall, but
before the grills have been attached. Knoll speakers
come from the factory with a paint shield. This should
be installed over the speaker drivers when painting the
frame or flange to protect the drivers and removed
after painting.
Paint the Grills
The grills may be lightly sprayed with thin paint (five
parts thinning agent to one part paint), but be careful
not to plug the holes. Too much paint will adversely
affect the sound of the speaker. Knoll suggests all
grills be painted separately from the speakers.
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