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Install Guide
Rev. F
When connecting your speakers, make sure proper polarity
(phasing) is maintained. Simply put, this means being sure the
same wire which is connected to the positive terminal of the
amplifier has its other end connected to the 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. If possible, assess the area behind the ceiling for possible
concealed obstructions such as wiring, heating ducts, cross-
bracing etc. Absence of a crawl space will require greater study
of observable clues and may also require the use of inspection
holes and inspection tools (camera, mirror, flashlight, etc.). Use
an “electronic stud finder” to locate the positions of the joists or
studs. We recommend that the edge of the speaker holes be at
least 3/4" (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 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. To
do this, temporarily hold the templates in place with a push tack
or tape.
Using the proper tool cut the appropriate
sized hole in the ceiling. On drywall, clean
cuts can be made with a drywall saw. Make
sure to clean the excess debris from the
front face of the hole to ensure a flush fit.
If the cable has not yet been run, do so now that you have better
access to the ceiling. 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 cu ft (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 prior to installation.
Verify that the speaker fits properly into the cut-out and then
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 turn each screw clockwise.
The toggle clamps will rotate outward to engage the ceiling
material as shown. Before tightening the three screws, orient
the speaker toward the listening area. Tighten all the screws.
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.
The grilles can be painted using multiple light coats of spray paint.
Custom color spray paints are available from specialty companies.
Contact your dealer for more information. The grilles should be
removed from the speaker and painted in a clean environment to
prevent contamination. It is best to go around the grilles and apply
the paint from multiple angles. DO NOT remove the scrim cloth
from the backside of the grille. It is not replaceable.
The mid and high frequency levels can also be adjusted as desired
using the mid frequency (MF) and high frequency (HF) switches.
The MF switch is on the left and the HF switch is on the right, when
looking at the foam surface when the speaker is installed in the
ceiling. Moving the switches to the left decreases the level and to
the right increases the level (See the image above).
Place the diffraction ring on the front of the speaker taking care to
line-up the slots provided with the mid / high frequency switches
(K-625d/K-825d). The K-62d diffraction ring includes indentations
to be lined-up with the baffle screws. The K-82d diffraction ring
works best if the diffraction ring magnets are positioned between
the baffle screws. The diffraction ring is magnetically attached
and should slip into place easily. The purpose of the diffraction
ring is to help maintain a smooth frequency response.
Attach the grilles to the speakers and enjoy. Should you wish
to remove the grilles from the speakers pull at the grilles' edge.
Initially there will be significant resistance because the grilles are
magnetically attached.
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ISF-147
RO
TA
TE
Home
Tighten 4
Phillips screws
Clean front
edge of cutout
to ensure a
flush fit.
