Atlantic Technology IWTS-6 CMS User manual

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IWTS-6 CMS and IWTS-8 CMS
TriMode Ceiling Speakers
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Innovative Home Theater
Installation Instructions
Thank you for purchasing Atlantic Technology speaker products, these
unique, TriModespeakers solve myriad surround sound and distributed
audio installation problems. We work very hard to ensure that all of
our speakers consistently deliver exceptional performance and value.
We hope you enjoy them to their fullest. Please take a moment to read
these instructions so you can get the most from your speakers.
Mounting Specifications
These speakers are intended for mounting in a ceiling, in material
ranging from 0.5 inches to I inch thick. They require at least 3-7/8
inches for the 6 CMS and 4-1/4 inches for the 8 CMS clearance behind
the front surface of the ceiling. The mounting opening for the 6 CMS is
7-7/8 inches in diameter. The mounting opening for the 8 CM Sis 9-1/2
inches in diameter. These speakers will work equally as well in a wall
as in a ceiling, however note that the 8 CMS requires more mounting
depth than is normal in a 2x4 studded wall.
Operating Modes and Locations
Mono Mode Use Mono mode when the speaker will play a single
channel of information (as either the left or right channel of a stereo pair
of speakers). When used in Mono mode, both tweeters reproduce the same
signal. In Mono mode the speaker can be located anywhere within the
listening area. Generally however, it's best to keep it at least 24 inches away
from any wall boundaries (ceiling/wall/corner). Placing any speaker in dose
proximity toother boundary surfaces will always “color" the sound that the
speaker produces. Even speakers that incorporate frequency adjustments to
compensate can only make small improvements to the detrimental effects
ot boundary reflections. The more directly under the speaker you are. the
more high frequency information you will hear. Should you be using two
speakers in Mono mode to reproduce stereo, consider where the majority
and high frequency sound throughout the room and hence improve the
system’s performance.
Stereo Mode In Stereo mode each of the woofer’s dual voice coils
and the tweeters receives their own signals. The result is stereo repro¬
duction (albeit with limited separation) from a single speaker. This is
particularly advantageous in distributed audio systems where there is a
desire to have stereo sound in many rooms, but with as few speakers as
possible. Unlike so many ceiling speakers, the 8 and 6 CMS use very high
quality component parts and sophisticated designs to deliver excellent
sound quality; sound quality so good that it will surprise you. When
installed as a single point stereo speaker it's typically best to locate the
speaker as centrally within the listening area as possible. Directly in the
center of the room, or in the middle of the prime seating area.
Tri Vector * Surround Mode TriVector mode puts the two tweet¬
ers in each speaker out of phase with each other. The result, when you
sit centered on the tweeter array, is a non-localizablc sound field that
helps re create the surround field intended by the movie’s director.
Since the goal of Home Theater is to get you "lost in the movie,” a
diffuse surround field almost always works best. To that end the ideal
location for most diffuse surround speakers is directly to the sides of
the prime listening area. However, in many rooms there’s simply no
place to conveniently place speakers to the sides. Until the introduction
of Atlantic’s TriVector ceiling surrounds, the ceiling was an often used,
but generally less than ideal alternative.
When used in TriVector mode these speakers are best placed in the
ceiling to the sides of the prime listening location, with the tweeters
aimed towards the front and back of the room. You can also place the
speakers to the side and slightly forward or back of the prime listening
position, keeping the tweeter orientation as noted above. There’s a 15
degree “window" of placement forward or back of the listening position
that is acceptable. But note that any more forward or back and you’ll lose
the diffuse effect. Also note that, due to the low midrange frequencies
coming from the woofer, if you place the speakers directly over the
listening position there will be a fair amount of localizable surround
sound even when the speakers are set to TriVector mode.

New Construction and Retrofit Installations
Note: A new construction rough-in kit and back box kit are optional
available from Atlantic Technology Please refer to the instructions included
m those kits for their use. If the rough in kit has been used please go directly
to Step 2 below
Mounting Hole Specifications:
IWTS-6 CMS: Diameter = 7-7/8 in, 205mm. Depth = 3-7/8 m, 98mm
IWTS-8 CMS Diameter = 9-1/2 in, 247mm. Depth = 4-1/4 1 n. 108mm
7 Cut an appropriately sued opening in the ceiling material. Be sure that
the ceiling material can support the weight of the speaker. Also be sure
that the sides of the opening are at least 1-1/2 inches away from any
beams or studs within the cavity. II it is not. the rotating clamps will be
restricted in their movement and may not damp properly.
2 Be sure that all foreign material in the ceiling is kept out of the speaker
assembly, particularly the back of the woofer cone. (There is a doth
shield on the rear of the woofer, but please use care anyway.) If the
ceiling is void of insulation it will be beneficial to the performance of
the speaker to install an Atlantic Technology foam Sound Damping Kit
behind and around the assembly.
3 IMPORTANT: Depending md mode reo or sur¬
round) you intend to use. certain settings must be made before installing
your speaker! s).
Jumper Settings Find the jumper pins on the crossover board of your
speaker. They are the same for both the 6 ( MS and 8 ( MS. For Stereo
operation, install the jumper blocks as shown in Figure 2A. For Mono/
TriVector operation, install the jumper blocks as shown in Figure 2B.
Operation Settings To set the 6 CMS for Normal (mom) or stereo)
operation, attach the wiring connector to the pins marked NOR on
the crossover hoard as shown in Fig. 'A. For Trivector surround
operation, attach the connector to the pins marked SLR (Fig. 3B).
To set the 8 CMS for Normal (mono or stereo) operation, set the
upper selector switch located on the tweeter assembly to NOR. For
TriVector surround operation, set the selector to SIR (see Fig. 4A)
Use the high frequency level adjustment, also located on the tweeter
assembly, to increase ( ♦ ) or decrease (-) the level of high frequency'
sound produced by the tweeters. The settings on the 8 CMS can easily
be changed after the speaker is installed (see Fig. 4B).
Figure 2B -
Attach the previously installed audio feed wires to the appropriate
speaker terminals. For Mono or TriVector operation either set of input
terminals may be used. For Stereo operation one set ol leads is attached
to each set of input terminals. Simply remove 1/2 inch of insulation from
the end of each input wire. Push down on the terminal connector and a
large opening will appear in the shaft of the connector that is capable of
holding up to 10 gauge wire. Insert the bare wire into the opening and
release the terminal. Be sure to observe correct polarity, connecting the
positive (+) leads to the red terminals and the negative (-) leads to the
black terminals. Also be sure that no stray strands of wire touch across
any terminals. See Figure 5.
Figure 5 j
5 C heck to ensure that the rotating clamps are "parked" and not sticking
out over the edge of the assembly.
6 P ush the speaker assembly straight up into the opening with the tweeters
oriented as noted previously.
7 T ighten the mounting screws one at a time. As you tighten, the rotating
damps on the back of the assembly will turn and lower, until they contact
the hack of the ceiling and damp the ceiling between themselves and
the trim ring. Sec Figure 6.
Figures
Mono/TriVector
8 Snug all four mounting screw s in this manner to make a firm seal with
the ceiling. Be careful not to overtighten them.
Q Start the system and make sure the speakers are operat-
^ ing properly. If you have installed the 8 CMS adjust the high
frequency switch (on the tweeter assembly, under the grille) to get the
most natural balance of sound throughout the listening area.
W Install the grille by placing it into the recess and pushing it
in gently.
Figure 3A Figure 3B
Figure 4A Figure 4B
IWTS-6 CMS
55 - 20Wz. 3dB
89dB
2»8U Stew. 1.4 U Mono
Dual VC.
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Atlantic Technology
343 Vanderbilt Avenue Norwood. MA 02062
[phone] www.atlantictechnology.com
IWTS-8 CMS
45-20kHz, */-3dB
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2 ■ 8 0. Stew. 1x40. Mono
Dwi VC.
MvcaAjraobrte oaded Poyme* cone
2 ■ 1 meb domes vWphase tens
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010-1082