Atlantic Technology IWTS-155 Speaker User Manual
Contents
1. enclosure by install ing cross studs between the existing vertical studs Space these cross studs approximately 30 36 apart That will enclose the proper amount of air volume needed for the 155 to achieve its optimal per formance Again take care to seal these cross studs to the sheetrock Installation of the IWTS 155 in Existing Construction Removing and Installing the Grille Remove the grille from the speaker using an awl or the point of a drywall screw in a grille opening near one of the grille corners Slowly pry the grille out being careful not to damage the speakers frame or its finish To re install the grille later press it carefully into the appropriate opening in the frame assembly Since its designed to fit snugly please take your time and use care when installing the grille Cutting the Opening After determining the best location for the speaker as outlined above use the enclosed template to cut the proper size hole IWTS 155 LCR 14 x7 WARNING Exercise extreme care before making any wall cuts to ensure that you will not cut through any wires pipes or other items that may be n the wall You may sometimes but not always be able to determine the approximate location of wires and pipes by looking 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 m Installation Inst2. Installation Recommended Wire Sizes The longer the wire run the heavier the wire should be Use the following recommendations as a guide for your installation And if youre in doubt remember that it never hurts to get the next heavier grade of wire Also note that lower gauge numbers equal heavier wire sizes Wire Run Wire Gauge lt 15 ft 16 ga 15 to 30 ft 14 ga gt 30 to 50 ft 12 ga Location Considerations A major determinant of any speaker s sound quality is its location in the room With in wall speakers there are fewer placement options than with free standing speakers so giving some thought to location can really pay off Our In Wall Theater Systems have been designed to minimize the det rimental effects wall mounting can have on sound so they sound better than conventional in wall speakers Room Acoustics Hard surfaces create lots of sound reflections in the room while soft surfaces tend to absorb sound Note the speakers location in terms of proximity to glass and other highly sound reflective or absorptive surfaces A simple set of curtains or an area rug can make a major difference in sound quality and intelligibility by reducing excessive reflections Speaker Placement Speaker Placement For all the following situations its recommended that you first place small 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
3. 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 IR receiver in the knockout hole Should you have any questions or problems please feel free to contact us at 781 762 6300 or through our web site www atlantictechnology com m Atlantic TECHNOLOGY 343 Vanderbilt Avenue Norwood MA 02062 781 762 6300 www atlantictechnology com 015 1155 A
4. be placed slightly behind the listening position above 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 IWTS 155 LCR In Wall THX Ultra2 Theater System Speakers 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 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 recommen
5. re installed For all the following placement instructions it s important to bear in mind that for aesthetic considerations many people prefer to mount their in wall speakers well above seated ear level as doing so minimizes the speakers visual intrusion on the room The IWTS 155 LCR uses Atlantic s renowned 1 soft dome Low Reso nance Tweeter LRT Because of its low crossover point this remarkable tweeter allows the IWTS 155 LCR to deliver much wider midrange disper sion than conventional in wall speakers for greater placement flexibility without the severe acoustic and mechanical drawbacks of the so called pivoting tweeter Stereo Music Listening For stereo music reproduction place the speakers at approximately ear level when seated with both speakers on the same wall facing the prime listening location A separation of approximately 6 to 8 feet between the left and right speakers is usually good Ideally the distance between the two speakers will be close to the same as the distance from the speakers to the listening position E Bi 4 Home Theater Placement Home Theater Systems Front Speaker Array should be placed as close to ear level as possible Center Left 7 Right Optional Dipole Bipole Subwoofer 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 Direct Radiator Speakers should
6. IWTS 155 LCR Speakers In Wall THX Ultra2 Theater System Speakers u Safety Precautions Table of Contents 2 Model IWTS 155 LCR 3 Important Considerations Before Installation 3 Recommended Wire Sizes 3 Location Considerations 3 Room Acoustics 3 Speaker Placement 3 Stereo Music Listening 4 Home Theater Systems 5 Mounting the IWTS 155 Speakers 5 Installation of the IWTS 155 in New Construction with Optional Back Box Installation of the IWTS 155 in Existing Construction without Optional Back Box Removing and Installing the Grille Cutting the Opening Installing the Mounting Frame Painting the Speaker Assembly Speaker Connection and Assembly Installing the Speaker Enclosure Into the Frame Front Panel Controls HF High Frequency Level Control Boundary Compensation Control Directional Vector Control IR Knockout Specifications Ul N NININN S DD DOD UI 0 For Future Reference Record your serial numbers and date of purchase here Model Number Serial Number Date of Purchase The serial number is found on the back panel Copyright 2009 Atlantic Technology International Specifications are those in effect at the time of printing Atlantic Technology reserves the right to change specifications or designs at any time without notice IWTS 155 LCR In Wall THX Ultra2 Theater System Speakers Model IWTS 155 LCR In Wall THX Ultra2 Theater System Speakers Thank you for purchasing Atlantic Techn
7. alling the Mounting Frame The clamping mechanism allows the wall material to range from Y4 to 14 inches 13 to 38 mm in thickness There must be a mini mum depth behind the wall face of 3 92 mm As noted above be sure to keep the edges of the cutout at least 1 2 inch 13 mm away from any stud or obstruc tion as the rotating clamps will not operate properly if you dont Insert the frame into the cutout and using a level or square care fully align it so it is level Tighten the mounting screws which will cause the attached clamps to rotate and position themselves properly behind the wall Continue to tighten until the frame is snug in the wall You want the bezel to conform to the wallboard and the frame not to rattle from the speaker s vibration but be very careful not to overtighten the screws Painting the Speaker Assembly The white plastic frame and the metal grille may be left as is or painted to match your d cor You can paint the frame before or after it is installed in the wall Spray painting using slightly thinned paint is the best method to use for painting the grille Before painting the grille carefully peel off the cloth scrim After painting the grille use air pressure to blow out any grille holes that are filled in with paint Once the paint is dry re apply the scrim to the inside of the grille IWTS 155 LCR In Wall THX Ultra2 Theater System Speakers Speaker Connection and Assem
8. bly Strip about 12 13 mm of insulation from the connecting wires Connect them to the appropriate push terminal being careful to observe polarity positive to the red terminal negative to the black terminal Installing the Speaker Enclosure into the Frame Once the frame is mounted in the wall the speaker simply fits into the frame Note that there is a gasket around the edge of the MDF baffle This gasket ensures an airtight fit between the baffle and the frame Therefore the baffle may fit tightly in the frame This is normal Use the included screws to attach the baffle to the mounting frame but be very careful not to overtighten the screws Instruction Manual Front Panel Controls The IWTS 155 has two controls that help optimize the speak er s performance regardless of mounting location or room acoustics HF High Frequency Level Control This control adjusts the relative level of high frequency out put to compensate for varying room acoustics or placement behind a screen is for absorptive acoustically dead rooms or when the speaker is behind a movie screen Use this position to increase the HF level and restore the proper sparkle and liveliness to the sound 0 is for rooms of average absorptive characteristics cc CC should be used in rooms that are highly reflective with hard floors and exposed windows The setting of the HF control is mostly a matter of personal
9. d 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 cant 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 Instruction Manual 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 The IWTS 155 LCR can be easily mounted in most any standard wall mate rial from Vs to 1 inches thick Use the grille frame assembly GFR 155 sold separately The GER s rotating wall clamps firmly fix it to the wall surface after the proper cutout has been made An important precautions to take before mounting Keep the sides of the actual mounting hole at least inch away from beams or studs to ensure that the clamps have adequate room to rotate A stud or other obstruction thats too close will stop them from properly doing their job Installation of the IWTS 155 in New Construction with Optional Back Box For new construction we highly rec ommend that you use the optional Back Box IN BOX 155 The Back Box provides the correct acoustic envi
10. ology products Our speaker sys tems have been designed to deliver exceptional sound and value We hope you like what you hear from them and are happy with your decision to buy them Please take a few moments to read these instructions They re intended not only to tell you how to mount the speakers but how to get the best perfor mance from them What s THX THX is a series of standards and technologies originally developed by LucasFilm Ltd of Star Wars fame and now an entity unto itself These technologies and standards are intended to ensure that what you hear and see on your A V system as closely as possible matches what the director artist engineer heard and saw during the final mixing of the source mate rial THX standards are intended to enhance every type of viewing and listening experience including the latest discrete multi channel digital for mats Please note however that although there is proprietary THX electronic processing THX is not a surround format THX Ultra2 standards are based on a 3000 cubic foot room L x W x H cu ft This does not mean Ultra2 certified components must be used in rooms this exact size The room sizes simply provide a frame of reference as the standards specify that the system must deliver certain performance minimums volume frequency response etc in the specified space For more information see the THX website at www thx com Instruction Manual Important Considerations Before
11. ronment for the 155 LCR and ensures its THX level performance The rotator clamps sometimes called dog legs will easily grab the combined thickness of 5 8 sheetrock and the 3 8 back box s front panel The sheetrock must be adhered to the front panel of the back box very solidly and positively Use very liberal amounts of a high quality construction adhesive such as Liquid Nails to ensure a secure vibration free bond Please see the installation instructions that come with the IN BOX 155 for more details Installation of the IWTS 155 in New Construction without Optional Back Box There may be new construction situations where the Back Box IN BOX 155 is either not desired or not feasible For those situa tions Atlantic Technology offers an optional Rough in Frame Kit IN NC 155 to ease installation in new construction Instructions for its use are included with this kit Ask your Atlantic dealer for more details Installation 5 ga IMPORTANT f the IN BOX 155 is not used in New Construction situ ations it s recommended that the wall cavity be treated with acoustic filler and that all extraneous wires etc in the wall cavity are securely buttoned down so there is no unwanted vibration or rattling after the speaker is installed Try to make the wall cavity as airtight as pos sible by sealing all the stud to drywall seams with a flexible silicon caulk or similar substance It is also recommended that you create an
12. taste so try it in all three positions and see which one is preferred Boundary Compensation Control Large room boundaries such as floors walls and ceilings reinforce sound by acting essentially as acoustic mirrors z When the speaker is mounted too close to the corner or a 1 e cc wall ceiling intersection this sonic reinforcement often results in an unnatural heaviness or coloration of the sound Specifications IWTS 155 LCR Type 2 way Drivers Woofer 2 5 14 135mm GLH 1 25mm soft dome LRT 58Hz 20kHz 3dB 6 Ohms Crossover Frequency 2 1kHz 3rd order Sensitivity 89dB 10 150 Watts RMS 5x8 VXI A Tweeter Frequency Response Nominal Impedance Recommended Power Dimensions grill frame WxHxD 395 x 216 x 97mm Cutout Dimensions 144x718 WxH 362 x 181mm Net Weight 8lbs 3 6kg each Graphite Loaded Homopolymer Specifications are those in effect at the time of printing Atlantic Technology reserves the right to change specifications or appearance at any time without notice THX and THX Ultra2 are trademarks of THX Inc Manufactured under license from THX Ltd THX Is a trademark of THX Ltd which may be registered in some jurisdictions All rights reserved Front Panel Controls If its necessary to mount the speaker closer than 12 inches to the ceiling or corner you may find that by switching the Boundary Compensation control on the speaker sounds better
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