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77 Search Results Found |
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Forum: Pi Speakers «»
Posted on: Fri, 17 June 2005 01:41 «»
By: Wayne Parham
π Cornerhorns - a brief history
The basic seven π cabinet has been unchanged since inception in the 1970's. It's a very simple design, with its main feature being that the woofer radiates from the apex of the room's corner. The corner is used as a large CD horn that provides 9dB DI a...
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Forum: Pi Speakers «»
Posted on: Wed, 04 May 2005 10:35 «»
By: Wayne Parham
Re: You've got mail!
The speakers you are referring to are made by the person who used to make my cabinets and midhorns, so that's why you see such a similarity. If you don't have two good corners, you can build a three or four π loudspeaker with a midhorn. Just be sure the...
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Forum: Pi Speakers «»
Posted on: Tue, 08 March 2005 06:38 «»
By: Wayne Parham
You've got mail!
The EBS alignment gets its name extended bass shelf from the type of response curve it gives. Response falls off up in the midbass or midrange and stays at this reduced shelf down to another point where it rolls off rapidly. So what you gain in extensio...
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Forum: Pi Speakers «»
Posted on: Mon, 21 February 2005 07:20 «»
By: Wayne Parham
Re: Corner Horn Recommendations
There are two big advantages of the π cornerhorn configuration. One is the efficiency increase offered and the other is directionality is matched from the lowest bass range up when 90° HF horns are used. This creates a uniform reverberent field like no ...
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Forum: Speaker «»
Posted on: Sun, 23 January 2005 14:01 «»
By: Wayne Parham
Re: Favorite flavors
There is some debate as to whether reflections are good or bad. Reflected energies give ambience to the sound, albeit an artificially generated ambience. On the other hand, reflections cause intelligibility problems and response anomalies, so too much o...
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Forum: Speaker «»
Posted on: Sat, 22 January 2005 21:09 «»
By: Earl Geddes
Re: Favorite flavors
WayneThese two comments are not true."But the listening area just becomes too small. The reverberent field is usually non-uniform too, since the highly directional nature of a narrow HF horn is very different than the non-directional LF energies produced ...
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Forum: Pi Speakers «»
Posted on: Wed, 29 December 2004 14:12 «»
By: Wayne Parham
Re: JBL sub1500 corner horn?
That is a nice woofer. It works well in sealed cabinets, and is not underdamped (peaky) in even very small boxes, down to 0.5ft3. However, bass response isn't good unless the cabinet is made larger than at least 1.0ft3, where f3 is 60Hz. In my opinion,...
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Forum: Speaker «»
Posted on: Mon, 26 July 2004 11:10 «»
By: Wayne Parham
Re: choices, choices
You're right, there are lots of choices to consider.Here are some general rules:Long horns with narrow and gradually opening flares tend to improve low-end response.Shorter horns with more rapidly opening flares tend to work better at higher frequencies.B...
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Forum: Pi Speakers «»
Posted on: Mon, 12 April 2004 01:03 «»
By: Wayne Parham
Implementation
Implementation
The simplest implementation of the horn is as a full vocal range driver. When used in this way, it will provide output from 250Hz to 3.5kHz in free space, or 150Hz to 3.5kHz quarter-space or eighth-space, such as when used indoors. For ...
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Forum: Pi Speakers «»
Posted on: Tue, 13 May 2003 23:56 «»
By: Wayne Parham
Baffle spacing, phase angles and time alignment, revisited
In this post, I'd like to revisit the issues of baffle spacing, phase angles and time alignment. It's been a while since we talked about this, and I think it would be good to come at it from a different angle.
Bad pun. Sorry.
There's no way to ma...
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