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495 Search Results Found |
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Forum: Pi Speakers «»
Posted on: Wed, 05 October 2011 17:35 «»
By: Wayne Parham
Re: Speaker placement and wavefront launch
The illustrations show radiation from a monopole source with boundary distances relative to wavelength. You're right that different frequencies create different patterns in the room, because the speaker is a fixed distance from the boundaries. But thes...
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Forum: Pi Speakers «»
Posted on: Sun, 02 October 2011 00:35 «»
By: Wayne Parham
Speaker placement and wavefront launch
The ideal: The constant directivity cornerhorn. In this configuration, the sound source is within 1/4λ from the apex of the corner. This makes the walls act essentially as a large waveguide, confining radiation to the angle of the walls. There is no ...
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Forum: Pi Speakers «»
Posted on: Thu, 15 September 2011 12:35 «»
By: Wayne Parham
Re: 1pi or 2pi for surrounds?
For home hifi and home theater, I like running the mains and surrounds full range because of the benefits in the modal region. Blending multiple sound sources smoothes the room modes.
If you were running in a prosound environment, it would be a diffe...
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Forum: Pi Speakers «»
Posted on: Wed, 14 September 2011 22:10 «»
By: Wayne Parham
Re: 1pi or 2pi for surrounds?
Above 200Hz, your chart is pretty close to what I measure from the little one π speakers. They're flat up top, with gradually reduced bass below a couple hundred Hertz. By 65Hz or so, they're really pretty much done, although in your case, a room mode ...
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Forum: Pi Speakers «»
Posted on: Fri, 09 September 2011 09:50 «»
By: Wayne Parham
Re: Contemplating a change
It's hard to say. On the one hand, I always tell folks contemplating mods to think twice, because these designs are mature and have been thoroughly tested. On the other hand, you've had those boxes for years, so I would assume you like the midbass/midr...
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Forum: Pi Speakers «»
Posted on: Sat, 03 September 2011 22:18 «»
By: Wayne Parham
Re: New HT - Need Advice on Speakers - 4pis or 7pis for main, 2pis, and what to use for bass
Answers by numbers:
1. The seven π cornerhorn is a constant directivity cornerhorn. The four π speaker is a matched-directivity two-way loudspeaker. The difference is that a constant directivity cornerhorn provides constant directivity from the Sch...
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Forum: Pi Speakers «»
Posted on: Thu, 01 September 2011 21:36 «»
By: Wayne Parham
Re: 4pi Commercial Dinner Theater Build
Flanking subs and distant subs are two different things, and serve two different purposes. Both provide extension, and beyond that, the main purpose of the flanking subs is to smooth the upper midbass and lower midrange and the main purpose of the dista...
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Forum: Pi Speakers «»
Posted on: Thu, 01 September 2011 21:10 «»
By: Wayne Parham
Re: 4 Pi Home Theater Build
Bass traps are effective, provided they actually absorb enough energy. Panel absorbers work best. They can be made as a false wall, and therefore can be somewhat inconspicuous.
Too bad you can't get more subs. Even just a couple more small car subs...
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Forum: Pi Speakers «»
Posted on: Thu, 01 September 2011 10:41 «»
By: Wayne Parham
Re: 4 Pi Home Theater Build
The hardest thing to deal with is those rigid walls. I saw this in Europe too, lots of concrete flats with stucco walls. Hard surfaces on all six boundaries - all four walls, ceiling and floor. You can damp the midrange and treble reflections with car...
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Forum: Room Acoustics «»
Posted on: Sun, 28 August 2011 10:46 «»
By: Wayne Parham
Re: Room Layout Any Suggestions?
Actually, the entrances breakup standing waves, potentially reducing your room modes. It may be a very good room for a sound system.
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