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.
This speaker is
optimized for
off-axis listening
through the use
of a pivoting
tweeter and a 15
degree baffle tilt.
We recommend
directing the woofer and tilting the tweeter toward the listening
position. USE CARE TO AVOID DAMAGING THE DOME OF THE
TWEETER WHEN AIMING!
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).
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.
preference-audio.com
Tighten 3
Phillips screws
ISF-147
RO
TA
TE
Home
page 2 of 2
Install Guide
Rev. B
Clean front
edge of cutout
to ensure a
flush fit.
Primary Listening Area
