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Rev. B
positive terminal of the speaker. It is important to check this
on all speakers. If the connections on one of the speakers
are reversed, (out of phase) the quality of your bass will be
seriously impaired.
INSTALLATION
If the speaker locations have not yet been established then do
so now. Assess the ceiling or wall area for possible concealed
obstructions such as wiring, plumbing, heating ducts, etc.
For the ceiling this is best done through an attic crawl space
if available. Absence of a crawl space will require greater
study of observable clues and may possibly require the use
of inspection holes and inspection tools (camera, mirror,
flashlight, etc.). Use a “stud finder” to locate the positions
of the joists or studs. We recommend that the edge of the
speaker holes be at least ¾" (19mm) away from joists or studs
whenever possible to allow clearance for the toggle clamps.
Once the speaker locations are established use the cardboard
template (the outside of the inner cardboard disk) or the
plastic compass provided with your speaker to draw the
speaker cut-out. The hole diameters for the various speakers
are marked on the compass. The cardboard templates may
also be used as a visual aid for placement of the speakers.
Temporarily hold the templates in place with a push tack or
tape.
Using the proper tool, cut the
appropriate sized hole in the wall. On
drywall, clean cuts can be made with a
drywall saw. Cut the hole to the inside
of the drawn circle.
If the cable has not yet been run, do so now that you have
access to the ceiling or wall's interior. Once the speaker cable
has been run, pull the end of the cable out of the speaker
cut-out, strip back a section of the jacket as needed, and then
expose ½" (13mm) of each conductor.
To aid in speaker performance, a fibrous material, such as
fiberglass or polyester fiber, may be placed behind the speaker.
This may also help to reduce unwanted sound from being
transmitted into adjoining rooms.
If the ceiling space has blown or
loose insulation, it is important to
prevent the insulation from entering
the back of the speaker. This can be
accomplished by placing a batt of
fiberglass insulation, fabric barrier,
or bag over the back of the speaker.
Alternatively you may use an
Insu-Flate ISF-147,
which is an
acoustically transparent fabric cover specifically designed for
this application. Placing a rigid enclosure behind the speakers
can be done but the enclosure should be large enough not to
degrade the performance of the speaker. Rigid enclosures of
less than 0.75 cuft (21 liters) should be stuffed with acoustic
insulation such as fiberglass.
As the drawing shows, the speakers
utilize Toggle Clamps which, after
tightening, hold the speakers in place.
Ensure that the toggle clamps are
rotated into their “Home” position.
This way, they will clear the edge of
the cut-out.
Verify that the speaker fits properly
into the cut-out. If the hole should
have been cut a little too large the
flange on the speaker should cover this. Remove the speaker
from the hole.
Connect the wire conductors to the terminals on the back of
the speaker by depressing each spring terminal, inserting
the wire into the hole, and releasing the terminal. Use care
to observe the proper polarity (+ & -). Speakers wired out of
phase will exhibit an apparent loss of bass response.
Note:
Single-Point speakers
have both the left and right
channel connections on the same speaker. Ensure that
both channels are connected and in phase. An out of phase
connection to a single-point speaker will be immediately
obvious when signal is applied since there will be little if any
bass output. If disconnecting one of the inputs increases the
bass output then the inputs are out of phase.
Insert the speaker into the hole and tighten the four toggle
screws. As you start to turn each screw the toggle clamps will
rotate outward to engage the ceiling or wall material as shown.
CAUTION: DO NOT OVER-TIGHTEN THE CLAMPS. Too much
torque may damage the toggle, causing the speaker not to seat
securely. A snug fit is all that is necessary to assure proper
performance.
If the speaker frames are to be painted, either before or after
installation, use the paint-mask (the inner cardboard disc) to
cover the speaker driver(s) to prevent damage. DO NOT PAINT
THE GRILLE AND FRAME ASSEMBLY TOGETHER. The grille
should be painted separately. Use thin coats and thin the paint
as necessary to avoid clogging the perforations with excessive
paint.
If your speaker includes a pivoting tweeter aiming it toward the
listening area will raise the amplitude of the highest frequencies
(>12kHz), adding brilliance. USE CARE TO AVOID DAMAGING THE
DOME OF THE TWEETER WHEN AIMING!
ISF-147
For: 5-1/4, 6-1/2"& 8"
In-Ceiling
Presence
RO
TA
TE
Home
Tighten 4
Phillips screws
