How to Guide
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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, ashlight, etc.). Use
an “electronic stud nder” 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 ush t.
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 brous material, such as
berglass, 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, care must be taken
to prevent the loose insulation from
entering the back of the speaker. This
can be accomplished by placing a batt
of berglass 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
specically 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 berglass.
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 ts 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 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 t is all that is necessary to assure proper performance.
The grilles can be painted using multiple light coats of paint.
Certain paints will require thinning to avoid clogging the grille’s
perforations. It is not necessary or recommended to remove the
scrim cloth from the back of the grille prior to painting.
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!
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 a signicant resistance because the grilles
are magnetically attached.
WARRANTy - LIFETIME LIMITED
OEM Systems Co. will repair or replace any product found to be faulty due to defects in material or
workmanship, with new or rebuilt parts, free of charge in the USA, from the date of original purchase, for
the life of the product. This is a no-hassle warranty with no mail-in warranty card needed. This warranty
does not cover damages in shipment, failures caused by other products, or failures due to accident,
misuse, abuse, acts of God, or alteration of the equipment. This warranty is extended only to the original
purchaser, when purchased through an authorized reseller and a purchase receipt, invoice, or other proof
of original purchase date is provided. This warranty gives you specic legal rights and you may have other
rights (which vary by area). If a problem with this product develops during or after the warranty period,
please contact OEM Systems Co., your dealer, or any factory-authorized service center for service. Mail-in
service can be obtained during the warranty period by calling 775-355-0405 or via email at
info@oemsystems.com. A Return Authorization (RA) number must be obtained in advance and a copy of
the RA form should be included inside the shipping carton.
page 2 of 2Install Guide Rev. G
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For: 6-1/2"& 8"In-Ceiling
ISF-147
Tighten 4
Phillips screws
Clean front
edge of cutout
to ensure a
flush fit.
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