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446 Search Results Found |
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Forum: Pi Speakers «»
Posted on: Sun, 11 January 2009 15:18 «»
By: Wayne Parham
Re: Subwoofer Recommended for 2 Pi Towers?
I don't run subs with my two π towers.When you asked about subs I gave some suggestions as to what could be used, but don't take that as a recommendation either for or against using them.The multi-sub approach is a strategy that smoothes the energy distri...
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Forum: Pi Speakers «»
Posted on: Wed, 07 January 2009 12:15 «»
By: Wayne Parham
Re: Positioning and subs
I have always liked corner placement where possible. It sets the radiation angle at frequencies above the Schroeder frequency. If a sound source would radiate omnidirectionally otherwise, placing it in a trihedral corner forces radiation to be limited t...
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Forum: Pi Speakers «»
Posted on: Wed, 07 January 2009 11:25 «»
By: Wayne Parham
Re: Floor Bounce ?
Floor bounce is a reflection from the floor that creates a self-interference notch. It usually occurs between 100Hz and 200Hz, but is totally dependent on the height of the speaker and the distance to the listener. What causes it is a path length diffe...
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Forum: Pi Speakers «»
Posted on: Mon, 05 January 2009 20:35 «»
By: Wayne Parham
Re: Imaging, placement and orientation
That's very true. The one π and two π models do not provide constant directivity like the three π, four π and π cornerhorn models do.The one π and two π speakers are direct radiators with fairly simple crossover networks. They're great for on-axis liste...
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Forum: Pi Speakers «»
Posted on: Fri, 02 January 2009 15:31 «»
By: Wayne Parham
Imaging, placement and orientation
We've discussed uniform directivity and its benefits many times here. We've also talked about the reasons why the imaging of the π cornerhorn is good throughout a large listening area, because of the combination of its uniform directivity and the requis...
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Forum: Speaker «»
Posted on: Tue, 09 December 2008 16:36 «»
By: Wayne Parham
Re: high eff. 3way.
To get higher efficiency than your little one π Speakers, you're probably going to need horns. One π's are 95dB/2.83v/M, so your goal is to go above that.There are a handful of speakers that get above 95dB/2.83v/M but not many that go above 100dB/2.83v/M...
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Forum: Pi Speakers «»
Posted on: Wed, 22 October 2008 11:22 «»
By: Wayne Parham
Re: Target transfer function for 4pi?
I use a slightly overdamped cabinet for smooth bass rolloff and CD equalization on the tweeter for even power response. The loudspeaker response curve and other performance data is shown at the following link:four π performance dataIf you're just looking...
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Forum: Pi Speakers «»
Posted on: Tue, 16 September 2008 12:15 «»
By: Wayne Parham
Re: old version of Pi4 pro
Use the new crossover, as it has smoother response through the crossover region.The two-way matched-directivity configuration trades simplicity and fewer crossover points for higher bandwidth required of the midwoofer. The three-way cornerhorn configurat...
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Forum: Pi Speakers «»
Posted on: Mon, 08 September 2008 23:01 «»
By: Wayne Parham
Matched directivity two-way loudspeakers
Like virtually every other compression driver + CD horn combo, HF rolloff is predictable, since power response falls off at 6dB/octave and horn directivity is constant. The goal of designers using a horn like this is to combine it with other drivers or h...
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Forum: Speaker «»
Posted on: Tue, 29 July 2008 15:51 «»
By: Norris Wilson
Pro's and con's of adding a super tweeter to HF horn section?
Could someone explain the basic pro's and con's of adding a super tweeter above a 1" DC with constant directivity horn in a three-way direct radiator speaker? In my case I would be using JBL 2226J 16 ohm 15", JBL 2118J 16 ohm 8" midrange, 1" Beyma CP-385...
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