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76 Search Results Found |
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Forum: Pi Speakers «»
Posted on: Wed, 28 December 2005 09:38 «»
By: Wayne Parham
Uniform reverberent field
…and also makes the reverberent field uniform throughout the entire audio spectrum, something that is nearly impossible with other loudspeaker designs. Early reflections are reduced while at the same time providing complete coverage and a wide "sweet spot…
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Forum: Pi Speakers «»
Posted on: Thu, 26 June 2008 13:50 «»
By: Wayne Parham
Uniform directivity
… net effect is that the reverberent field is uniform.But if you're used to the sound of a typical direct radiator that falls off off-axis, then having a uniform reverberent field can sound fuller. There is definitely a difference. It's unnatural to me …
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Forum: Pi Speakers «»
Posted on: Mon, 20 May 2013 13:13 «»
By: Wayne Parham
Uniform Directivity - How important is it?
…
That's why I often refer to speakers with uniform directivity rather than constant directivity. It is more important to me that the power response be uniform than it is for directivity to be constant. They are similar, but not exactly the same.
To…
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Forum: Pi Speakers «»
Posted on: Fri, 28 April 2006 10:38 «»
By: Wayne Parham
Re: Corner Horn positioning "Sweet Spot" for listening...HELP
…onfiguration. The reverberent field is very uniform because off-axis response is the same as on-axis response. The best listening places are those where the listener is equidistant from the speakers and where the angle between each speaker and the …
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Forum: Pi Speakers «»
Posted on: Tue, 05 September 2006 15:04 «»
By: Wayne Parham
Re: Learned some more audio truth outdoors
…determines the reverberent field. Uniform directivity along with uniform response makes a uniformly charged reverberent field. If directivity fluxuates up and down, then the reverberent field won't be uniform even if on-axis response is good.Uniform …
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Forum: Pi Speakers «»
Posted on: Mon, 30 April 2001 22:46 «»
By: Wayne Parham
Pi horn design philosophies
…design.The cornerhorn quickly evolved into a uniform directivity experiment. I noticed right away that the Pi cornerhorn did something special, even when loaded with only direct radiators. I built them in several varieties, always with a rear-facing …
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Forum: Pi Speakers «»
Posted on: Sat, 04 May 2002 09:07 «»
By: Wayne Parham
Re: Differences between "normal" of "horn"-type active filter.
…the directivity, usually making it more uniform but not always. Constant directivity horns tend to make the directivity more constant as the name implies. They usually have straight side walls that set the radiation angle. But they cannot make the …
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Forum: Pi Speakers «»
Posted on: Thu, 10 June 2010 13:07 «»
By: Wayne Parham
Woofer size for uniform directivity loudspeakers
…in. The main objective is to provide a uniform reverberent field, one with good spectral balance. Probably the most annoying abberation is the one that's most common, where there's too much midrange energy in the room. This is caused by having too wide…
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Forum: Pi Speakers «»
Posted on: Fri, 23 January 2009 18:10 «»
By: Wayne Parham
Re: Single sub bad - multi subs good
…region, ideally to point source mains with uniform directivity. This is accomplished with flanking subs low-pass somewhere around 90Hz - 120Hz, maybe as high as 150Hz. That's too high for distant subs but it's just right for woofers that are spaced only…
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Forum: Pi Speakers «»
Posted on: Thu, 24 January 2008 20:53 «»
By: Wayne Parham
Room gain, pressure region, modal region and reverberent region
…is the pressure range where the room is uniformly pressurized, below about 20-30Hz. The second region is the modal range where standing wave nodes form, between 20-30Hz and 150-200Hz. The third region is the reverberent range, above about 200Hz.
The …
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