Instruction manual
2 
 IWTS-30 LCR In-Wall Theater System Speaker
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.
Safety Precautions
Copyright © 2007 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.
Model IWTS-30 LCR 
In Wall Theater System Speaker
Thank you for purchasing Atlantic Technology 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.
Important Considerations Before 
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 you’re 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:
<15 ft. 16 ga.
15 to 30 ft. 14 ga.
>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. 
The IWTS-30 LCR has been designed to minimize the detrimental effects 
wall mounting can have on sound, so they sound better than conventional 
in-wall speakers.
Table of Contents
Safety Precautions
 2  Model IWTS-30 LCR
 2  What's THX?
  2  Important Considerations Before Installation
 2  Recommended Wire Sizes
 2  Location Considerations
 3  Room Acoustics
  3  Speaker Placement
  3  Using the 30 LCR's Tiltable M-T-M Baffle
 3  Stereo Music Listening
 4  Home Theater Systems
  5  Installation of the IWTS-30 LCR in Existing Construction
  5  Installation of the IWTS-30 LCR in New Construction  
with Optional Back Box
  5  Installation of the IWTS-30 LCR in New Construction  
without Back Box
 5  Removing and Installing the Grille
 5  Cutting the Opening
 6  Installing the Mounting Frame
  6  Painting the Speaker Assembly
  6  Speaker Connection and Assembly
  6  Installing the Speaker Enclosure Into the Frame
  7  Front Panel Controls
 7  HF (High Frequency) Level Control
  7  Location Control
  7  Boundary Compensation Control
  7  IR Knockout
  7  Specifications








