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73 Search Results Found |
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Forum: Pi Speakers «»
Posted on: Thu, 23 August 2007 14:43 «»
By: Wayne Parham
Re: Basshorn Size
Hoffman's Iron Law states that the efficiency of a woofer system is directly proportional to its cabinet volume and the cube of its cutoff frequency. What this means is the most powerful subwoofer systems are necessarily large.What this formula says is y...
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Forum: Pi Speakers «»
Posted on: Tue, 26 June 2007 11:10 «»
By: Wayne Parham
Re: 12π basshorn subwoofer / 9π full range top
Each horn is to be independent of each other. This makes them more configurable for the installer. The challenge is how to make them most configurable and at the same time make them easy to setup in a building block approach. For example, with the cabi...
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Forum: Speaker «»
Posted on: Sat, 28 April 2007 13:56 «»
By: justinc
Re: Subwoofer array questions---Justin
the room is close to 6000 cubic feet. One thing you have to remember is that 2 ported 12" subs will have very similar output down low to 6 or 8 sealed subwoofers. They should typically have a 6-9db increase in efficency near the tuning frequency dependi...
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Forum: Speaker «»
Posted on: Wed, 18 April 2007 15:49 «»
By: Duke
Your ultimate loudspeaker idea - a suggestion
Very impressive looking cost-no-object system.Might I offer one suggestion: The basshorn is way too small to give true horn loading down to anything approaching 25 Hz. It will be in effect a direct radiator at that frequency, and will no doubt have to b...
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Forum: Speaker «»
Posted on: Fri, 26 January 2007 23:45 «»
By: Duke
Vented would be my suggestion
Good old-fashioned vented boxes give a very favorable bass extension vs box size tradeoff. With a sealed box, you'd need several times the x-max to reach an equivalent SPL at very low frequencies. A transmission line doesn't give as good a box size/bass...
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Forum: Speaker «»
Posted on: Thu, 25 January 2007 15:47 «»
By: justinc
Re: Inspired by the McIntosh XRT2K
Im really not sure about technical details I just plug the values into bassbox and modeled it and thats what I got My understanding though is since the drivers will be spaced about 1" apart the wave pattern in a line array is summative up to about 14,00...
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Forum: Speaker «»
Posted on: Sat, 09 September 2006 16:27 «»
By: Zene Gillette
Array Bass
Hi ... I see several configurations for woofers to use with arrays. A lot of us do arrays with small speakers (NSB, TB, etc) that do not go down very low to be able to just use a subwoofer. Are there some good rules for woofers? Crossing to arrays could b...
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Forum: Speaker «»
Posted on: Mon, 10 July 2006 10:53 «»
By: Anonymous
Re: Ultimate Line Array ($?)
>>Multiple DEQX or whateveryes, or whatever >>Pass ampsyes, but there are more affordable choices that won't affectperformance.>>or possibly wire all the drivers up in series and build OTL tube>>amps for the mids and tweets. I don't consider this 'ultimat...
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Forum: Speaker «»
Posted on: Fri, 30 June 2006 13:34 «»
By: FredT
Line Array versus Point Source Kits
Manualblock asked me this question on another forum, but I decided to answer it here because the topic is line arrays:Q. In simple terms the Selah that you like and use as your reference are 4K$ in kit form. To a guy looking to spend 4K$; there are vast p...
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Forum: General «»
Posted on: Tue, 09 May 2006 20:48 «»
By: Jim Griffin
Re: GPAF 2006
Bill, I'm glad that you enjoyed the line arrays. Regarding their output levels and such: I think that a lot of your comments likely was due to program material. I don't recall that we played much material all weekend that was heavy into the bass area. ...
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