Atlantic uses a special tweeter in most of its custom-installed models, which makes these speakers far more placement-flexible than other speakers. We call it the Low Resonance Tweeter (LRT™).

Here’s why it’s so special: Most in-wall and in-ceiling speakers are 2-way (woofer-tweeter) designs. In-wall speakers are usually mounted well above eye level, for aesthetic reasons. Most people who choose in-walls don’t want to see speakers in their room, so they mount them high up on the wall, above the sight line. That’s great visually, but lousy acoustically. Ceiling mounted speakers are even worse: Invisible, but hardly an optimal acoustic situation!

So to counteract the effects of bad placement, many wall- and ceiling-mounted speakers have tweeters that can pivot or swivel, so they can be “aimed” at the listening area. Not a bad idea, but not a perfect solution either.

The problem is that the woofer in a conventional 2-way wall or ceiling speaker handles too much of the sound spectrum. The woofer in a normal 2-way speaker handles not only the bass, but it handles virtually all of the critical midrange and lower treble as well. This is the frequency region that the ear uses to determine directionality—the sibilance in voices, percussion instruments, shattering windows, etc. And in the midrange/lower treble, woofers send out their sound like a flashlight beam—pretty much only straight ahead, but virtually nothing side-to-side or up-and down. So even if the tweeter can pivot down towards the listening area, it’s not reproducing enough of the total sound to make a real difference—the listener is still missing out on large portions of the sound.

What’s needed is a speaker where the tweeter, not the woofer, handles more of the sound spectrum, because tweeters—by virtue of their small diameter—spread the sound out over a very wide area, in all directions.

Simple, right? But typical tweeters are lazy. They don’t like to work very hard, so most speaker designers take the easy way out and only use the tweeter for the very highest treble notes.

(Engineers call this a “high crossover point.”)

Atlantic Technology takes a different—and better—approach. We’ve engineered a special tweeter that can work very hard (a “low crossover point”), and it can play most of the middle tones as well, thereby relieving the woofer of having to do what woofers can’t do. Our LRT tweeter spreads out the midrange sound (“disperses” the sound) over a much wider angle than the woofer, so all our In-Wall and the ICTS-6 LCR speakers cover the entire listening area beautifully in both the midrange and treble—even when they’re mounted high above the listener’s ears! There’s nothing else like them, and they completely solve the problem of getting truly good sound coverage without resorting to unsophisticated tweeter pivots, expensive motorized mechanisms or complicated and costly 3-way designs.