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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: Omni-directional speakers better for problematic rooms? posted by dave123456@mail.com on January 11, 2009 at 02:29:02:
I've built a few DIY projects with omni mids and forward-firing tweeters. This approach, also favored by Linkwitz, Dick Olsher, Danny Ritchie, and Dan Neubecker, produces a a very open and spacious soundstage without sacrificing precise imaging.
I find that such speakers work best with LOTS of open space around them. Too close to reflective boundaries, and there is insufficient delay between the arrival of the direct and reflected sound. Ideally you want at least 10mS delay, so the ear/brain mechanism can sort out the difference. Too-early reflections can smear and muddle the direct sound; when they are delayed, they contribute to the illusion of a wider, deeper stage. So I pull my omni speakers well out into the middle of the room. The walls are covered with a variety of diffractive and absorbtive materials, which reduce and break up the reflections.
The exception would be in a surround channel application. An omni speaker, right against the side wall and somewhat behind the listening position, has a diffuse radiation pattern ideal for surround channel information.
Interestingly, these kind of speakers sound wonderful with NO nearby reflective boundaries. I listened to one of my pairs out in the back yard a lot last summer, and they threw an incredibly deep stage when that information was in the recording.
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Follow Ups
- RE: Omni-directional speakers better for problematic rooms? - caspian@peak.org 14:00:21 01/11/09 (0)
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