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DC1 V3 Distance betwenn Sides and Rears
Posted by Andre Yew [IP: 208.8.104.2] on June 02, 1999 at 11:37:12 In Reply to: DC1 V3 Distance betwenn Sides and Rears posted by Ryan on June 01, 1999 at 15:26:25: Hi Ryan, Part of it is toeing in the speakers so they point at your head, and they don't cause bad reflections elsewhere. For example, you probably won't want to place dipoles in a corner. Another part is placing the speakers so that you get the correct angle of arrival for the particular speakers. For example, side speakers should be ideally be directly to the sides, at 90 degrees, of the listener to truly simulate sideways moving sound. If you don't do that, no matter how well you time align the speaker positions, you will not get the optimal lateral sound movement. If you want to get technical, you can think of speaker positioning in terms of polar coordinates, where time alignment is the radial coordinate (ie. distance), and angular placement is the angular coordinate. To completely specify speaker positions, you need both radial and angular coordinates, which is why time alignment alone is not sufficient to optimally place your speakers. For rears, it's slightly trickier because there aren't too many restrictions on where you should place your rears. It's been suggested that 150 degrees to the back may be good for various psychoacoustic reasons, but some people have found such placement unnecessary. So you should play around with the angles, with proper time alignment, to see what's the best position for you. That's all I wanted to say, in fewer words, that one should both properly time align speaker positions as well as find the right angular location of the speaker. --Andre
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