OEM Presence A-650 User manual

INSTALLATION GUIDE
Overall (W x H) Cut-Out (W x H x Depth)
A-650  9-1/16"x12-3/4" 8"x11-3/4"x3-1/4"
A-820  10-5/8"x14-5/8" 9"x13"x3-1/4"
A-830  10-5/8"x14-5/8" 9"x13"x31/4"
Rectangular In-Wall Loudspeakers
page 1 of 2Rev. B
Congratulations! You have purchased a high quality stereo
loudspeaker. When matched to comparable electronic
equipment, expect years of quality high delity sound.
Our belief is that music matters and we are focused on
delivering superlative music reproduction everywhere in
your home.
The following manual is designed to give you, the installer
or owner, basic information as to the speaker’s installation
and operation. It is beyond the scope of this manual to go
into all the details that must be taken into consideration in
a sophisticated high delity system. When installing the
wiring and speakers it is important to adhere to all local
codes and regulations. Consulting a professional will help
to maximize your system’s performance.
If you have any questions that are not answered by this
manual, contact your local dealer for assistance. For the
most current information please visit:
www.oemsystems.com.
GENERAL DESCRIPTION
These speakers have specially designed woofers with
linear long throw butyl rubber surrounds for long life and
superior damping. Pivoting Dome Tweeters are utilized for
excellent high frequency dispersion throughout your entire
listening environment.
SHIPPING DAMAGE
Each speaker is thoroughly tested before it leaves the
factory. However, in shipment, accidents may occur.
Please inspect your speakers carefully when you receive
them to make sure there is no damage. If there is, please
notify your dealer, or supplier immediately for assistance.
If you received your speakers by public transportation,
report the damage at once to the shipping company.
AMPLIFIER OPERATION
These speakers will perform well with ampliers from 5
to 125 Watts RMS. However, damage to the speakers can
be done by ampliers of nearly any power rating if the
amplier is overdriven into clipping. “Amplier clipping”
is a phrase used to describe a condition when, because of
the volume demand, an amplier is being asked for more
power than it can give. Clipping causes distortion of the
audio signal. If you should hear an unusual amount of
distortion at high listening levels then consider reducing
the volume. DAMAGE DONE TO A SPEAKER BY CLIPPING IS
NOT COVERED UNDER THE WARRANTY.
SPEAKER PLACEMENT
Placement of In-wall Speakers should be carefully
considered. Please contact a professional for assistance
if you are uncomfortable with the planning or installation
process. Ideally, the speakers should be located where
they will provide the best possible sound and ease of
installation. It is beyond the scope of this publication to
discuss all of the various aspects of speaker placement
but here are some helpful suggestions.
For more bass, place the speakers between 18 and 36
inches from an adjacent wall as measured to the center
of the speaker. Avoid placing the speakers less then 18
inches from an adjacent wall. When placing speakers near
a corner, avoid locating them an equal distance from the
two adjacent srfaces.
When used in a home theater the front left and right
speakers should be separated from each other a distance
of 0.8 to 1.2 times the seating distance (assuming they are
on the same plane as the center speaker). For example,
if the seating position is 10 feet from the viewing screen
and/or center speaker then ideally the distance between
the left and right speakers should be somewhere between
8 and 12 feet, (10 x 1.2ft = 12ft). Tweeters may be aimed
toward the listening area by pressing the lens area along
side the tweeter dome.
WIRING
To achieve maximum performance we recommend that
the speaker cable be at least 16 gauge or larger for runs
over 50 feet (15m) and that the cable be double insulated.
A CL-2 or CL-3 rated cable may be required. Check local
codes. “Zip cord,” which is single insulated and is often
made with clear insulation, should be avoided as it is not
as durable. Allow about 2½ feet (0.8m) of free cable at the
speaker cut-out and sufcient length at the other end to
reach the electronics. Having to add extra cable later can
be tedious and time consuming.
Avoid bundling speaker cables parallel to electrical cables
for extended lengths. Though the impedance is low and
the likelihood of interference low, this may help reduce
hum and RF interference. When securing the cable, use
care not to staple or nail through the electrical conductors.
Doing so could result in a short that might damage the
electronics.
When connecting your speakers, make sure proper
polarity (phasing) is maintained. Simply put, this means
ensuring the same wire which is connected to the positive
Presence 2-Piece Baffle & Frame
For: 6-1/2" & 8" In-Wall Models

page 2 of 2Rev. B page 2 of 2
terminal of the amplier 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 sound quality will be impaired.
INSTALLATION
If the drywall has not yet been installed a Rough-in-Bracket
(RI-6914 for A-525, RIB-62 for A-650, & RIB-82 for A-820 /
A-830) may be used to reserve the speaker location on the
wall. The Rough-in-Brackets are available from the distributor
or dealer where the speakers were purchased. When these
brackets are used the holes are cut when the drywall is
installed. The cable can be tied off on the bracket after
securing the cable to a nearby joist.
If the drywall is installed and the speaker locations have not yet
been established, then do so now. Assess the wall for possible
concealed obstructions such as wiring, plumbing, etc. Inspect
the backside of the wall, the attic, and/or the crawl space if
available for clues to possible obstructions. Use inspection
holes with inspection tools (camera, mirror, ashlight, etc.)
if absolutely necessary. Use a “stud nder” to locate the
positions of the studs.
Once the speaker locations are
established use the cardboard template
(the outside of the inner cardboard
rectangle) to mark the speaker cut-out.
The dimensions for the cut-out are listed
in the chart on the previous page. Using
the proper tool, cut the appropriate sized
hole in the wall. On drywall, clean cuts
can be made with a drywall saw.
If the cable has not yet been run, do so now that you have
access to the wall’s interior.
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 wall 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 over the
back of the speaker.
As the diagrams show, the speakers utilize a metal Retro Ring
which, after tightening with the 4 screws provided, acts as a
clamp to hold the frame in place. Note: Use only the 4 outer
holes for mounting the frame.
Install the frame and retro ring assembly by passing the metal
retro ring through the cut-out as illustrated in gures 1 & 2. For
the 8" speakers, observe that there is a top and bottom to
the frame. The top and bottom are identiable by the spacing
between the six vacant screw holes in the black retro ring.
The more-closely spaced holes are toward the top. The frame
should t cleanly, without interference, in the cut-out hole. If
the hole is a little small then trim the hole as needed. Lightly
tighten the screws to secure the retro ring against the back of
the wall (see g. 3). Use care not to over-tighten the screws or
the frame may become distorted.
Pull the end of the cable out of the wall, strip back a section
of the jacket as needed, and then expose ½" (13mm) of each
conductor. Connect the wire to the terminals on the back of the
speaker assembly, observing polarity (+ & -).
Insert the speaker into the frame and install the six screws
(see g. 4).
The frames and 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.
Install the grilles after testing the operation of the speakers.
The grilles are installed by gently working the edge of the
grille into the frame of the speaker, beginning at one corner
and working one or both directions around to an adjacent or
opposite corner.
Presence For: 5-1/4", 6-1/2" & 8" In-Wall Models
2-Piece Baffle & Frame