Upgrading your speakers can make changes in the range of 1 to 5 decibels. But simply changing your speaker position can make differences in excess of 15dB in response! Who would buy a loudspeaker product with a +/-15dB swing in response? Regardless of what speaker system you currently use, a basic understanding of the room & loudspeaker interaction and the applied fundamentals can help you make a substantial improvement in your systems performance.
There are no magic formulas for ensuring great sound in every room. We can however, identify and gain an understanding of basic acoustical principles. Some basic equipment including a 20' measuring tape, a test CD with a variety of test tones, an inexpensive analog sound pressure level meter and a calculator can reveal more information than you may want to know.
Like a speaker, every room has its own frequency response. To make things more complex, the response varies with the listener's location and the room's dimensions construction, and furnishings. Room dimensions determine standing wave frequencies. In general, rooms with dimensions that are divisible by a common factor, like 10' x 20' x 30' tend to compound standing waves at one frequency.
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