Any sound hits the human ears from reflective surfaces, front or side wall, that is not delayed by 5 millisecond will be perceived as the direct sound. That reflected sound will be convoluted with the direct sound coming out from the speaker and compromises the sound image (and possibly other traits of sound), again, if not delayed by 5 millisecond. The speed of sound is about 343 m/s at nominal temperature of 20°C in dry air. So the sound travel distance in 5 millisecond is 343x0.005/0.3048 = 5.63 ft. Half of this distance, from tweeter to the front/side wall, is 2.8 ft just under 3 ft. So, maintaining a minimum distance of 3 ft is the rationale. I won’t say to give improved sound by pulling your speakers out for that minimum distance, rather to maintain the clean, unpolluted sound. I hope this traditional wisdom from many other experts help answer your question.
Why does pulling out main speakers from wall improve sound?
Ask my dealer this question and he was stumped. He said it's a good idea but couldn't say why. I see speakers pulled out eight or more feet from the wall in very nice systems.
The drivers are facing forward, and when there are no ports in the back of the speaker so why would it matter?
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Good video @yyzsantabarbara , it's my post from above but in easier to understand video form. They don't address how boundary reinforcement though and how to deal with it. |
- 56 posts total