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It’s not your Speakers, It’s your Room

posted by Frank Stevens 4:14 AM
Wednesday, August 19, 2009

It’s not your Speakers, It’s your Room

If you’re looking for the perfect loudspeakers for your room, you can stop looking. The perfect loudspeaker system for your home, whether for stereo music or surround sound home theater applications, is impossible to design. That’s because any loudspeakers that are placed in your room will sound different than they did in the acoustic chambers or test rooms in which they were designed. While the speakers themselves may be perfectly fine and be well balanced, it’s your room that is the problem.

Room boundaries interact with sound waves that come from your loudspeakers and cause the sound you hear at almost any given point in the room to be changed. There are all sorts of distortions, frequency boosting, and cancellations going on in the typical room, almost as if you had an really amazing equalizer and then let a chimpanzee set the level for each band in a random position. As sound waves echo off the walls and alternately reinforce or cancel each other out, you are left with a poor reproduction of whatever came out of the speakers originally. What’s worse is that the balance is different in nearly every part of the room so that it can’t be fixed with an equalizer without making it worse in other parts of the room.

The good news is that the problem can actually be corrected, not by buying new loudspeakers, but by fixing your room. Don’t worry, fixing your room doesn’t involve a major remodeling effort, or even a minor remodeling. All you need to do is visit ReadyAcoustics.com and get a little expert advice and some acoustic treatment panels for your room. The panels come in a variety of shapes and sizes to fit the needs of your room. They act by damping sound waves that pass through them to substantially reduce the late echoes that interfere with the clarity and spectral balance of the music you hear.

Acoustic panels are thin, just a couple of inches thick. They are made to be placed along the walls to damp the sound as it first strikes them and then again by reducing the remaining echoed sound wave as it passes back through the panel off the wall. Acoustic panels are generally made of a rigid, porous board material like the fiberglass matrix used in Owens Corning 705, that doesn’t provide a solid surface to either reflect the sound or allow it to pass through easily.

Other types of acoustic treatments are designed for corner locations or other problem spots within the room. For the floor surface, a good thick carpet works well to reduce echoes from that surface. Careful placement of the speakers is another way to help tune your room for the best possible sound. All of these tips and more can be found at ReadyAcoustics.com, a website created by music professionals who found a decided lack of information about room acoustics on the web and decided to do something about it.