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 IWTS-155 LCR In-Wall THX Ultra2 Theater System Speakers 

Home Theater Placement

Home Theater Systems

Today’s home theater systems require you to place six or 
more speakers in your room. For the most convincing 
theater effects, speaker placement must be very carefully 
thought out. This is especially true with in-wall speakers, 
since their installation is permanent!

Left/Center/Right Locations

 The tweeter in the front three 

speakers should be at or just above ear height when seated, 
just as with stereo speakers. Try to keep the vertical posi-
tion of the three front speakers within 18 inches of each 
other, as this will maintain smooth, believable left-center-
right pans. 

Left

Center

Right

Subwoofer 

Front Speaker Array 

should be  

placed as close to ear level as 

possible. 

Optional Dipole/Bipole 

Speakers 

should be 

placed directly to the 

sides of the seating area 

and approximately  

1-2 feet (.3-.6 meter) 

above the listener’s ear 

level. 

Optional Surround Back Speakers 

should be placed approximately 1-2 

feet (.3-.6 meter) above the listener’s 

ear level. Dipole or direct radiators 

may be used here.

Optional Direct Radiator Speakers 

should be placed slightly behind the 

listening position, above ear level. 

The spacing of the left-right speakers can be a little wider 
than with 2-channel stereo speakers, since in a theater sys-
tem, the center channel speaker reproduces the on-screen 
effects and anchors the center image. Left-right spacing of 
about 8 to10 feet usually works well.

NOTE:

  The IWTS-155 LCR is not magnetically 

shielded. If you are using it with an old-styled CRT-
type television, be sure the speakers are located at 
least 12 inches away from the picture tube to prevent 
video interference.

Surround Speakers

 In order to achieve optimum perfor-

mance we strongly recommend Atlantic Technology Dipole 
or TriVector™ surround speakers. If you are using our dedi-
cated surround speakers please follow the placement recom-
mendations included in their installation instructions.

Non-Dipole Surrounds

 The most realistic surround effects 

occur when the listener can’t localize the actual location of 
the surround speaker.  If you decide to use the In-Wall The-
ater System speakers as surround speakers, mount them 
above the listeners’ ears, slightly behind the listening area 
either on the side or rear walls.

Summary of Contents for IWTS-155 LCR

Page 1: ...Instruction Manual IWTS 155 LCR Speakers In Wall THX Ultra2 Theater System Speakers ...

Page 2: ...rial THX standards are intended to enhance every type of viewing and listening experience including the latest discrete multi channel digital for mats Pleasenotehoweverthat althoughthereisproprietaryTHXelectronic processing THX is not a surround format THX Ultra2 standards are based on a 3000 cubic foot room L xW x H cu ft This does not mean Ultra2 certified components must be used in rooms this e...

Page 3: ...majordifferenceinsoundqualityand intelligibility by reducing excessive reflections Speaker Placement Forallthefollowingsituations it srecommendedthatyoufirstplacesmall box speakers in the proposed locations just to get a good idea of how that location will sound In wall speakers are tough to move once they re installed Forallthefollowingplacementinstructions it simportanttobearinmind thatforaesthe...

Page 4: ...ar level Dipole or direct radiators may be used here Optional Direct Radiator Speakers should be placed slightly behind the listening position above ear level The spacing of the left right speakers can be a little wider than with 2 channel stereo speakers since in a theater sys tem the center channel speaker reproduces the on screen effects and anchors the center image Left right spacing of about ...

Page 5: ...king at the locations of nearby outlets and plumbing But their location or absence is never an assurance that there is not something within the wall cavity Mounting the IWTS 155 Speakers NOTE We always recommend a professional be involved in the installation of the IWTS 155 LCR if at all possible TheIWTS 155LCRcanbeeasilymountedinmostanystandardwallmate rial from to1 inchesthick Usethegrille frame...

Page 6: ...e plastic frame and the metal grille may be left as is or painted to match your décor You can paint the frame before or after it is installed in the wall Spray painting using slightly thinned paint isthebestmethodtousefor painting the grille Before painting thegrille carefullypeeloff thecloth scrim Afterpaintingthegrille use airpressureto blowout anygrille holes that are filled in with paint Once ...

Page 7: ...speakercloserthan12inchestotheceilingor corner youmayfindthatbyswitchingtheBoundaryCompensationcontrol on the speaker sounds better We recommend that you try the control in both positions and see if it helps in your particular installation IR Knockout There s an IR knockout plug in the upper right corner of the front baffle If you are using a multi room con trol system you can install a standard I...

Page 8: ...015 1155 A 343VanderbiltAvenue Norwood MA 02062 781 762 6300 www atlantictechnology com ...

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