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1 Forum: Pi Speakers «» Posted on: Sun, 02 October 2011 00:35 «» By: Wayne Parham
Speaker placement and wavefront launch
…a perfect section of a purely spherical wavefront from the corner into the room. Of course, not all rooms are suitable for constant directivity cornerhorns. Some have obstructions or entryways near the corners. Others have corners that are just …
2 Forum: Pi Speakers «» Posted on: Thu, 22 January 2015 09:45 «» By: George Swanson
Speaker placement and wavefront launch, revisited
…Wayne, I'm finally able to access the forum! I sent you an email about Four Pi loudpeakers but I've been having issues with my personal email, sooo... I'd like a copy of the plans but I also asked about designing a corner bass reflex (or Jensen …
3 Forum: Pi Speakers «» Posted on: Tue, 02 June 2020 17:43 «» By: Wayne Parham
Re: Corner horn listening distance
…are two things in play here. One is the wavefront launch, which is affected by reflections from nearby boundaries. It's an SBIR effect. When the sound sources are acoustically close to the boundary, the wavefront expands away from the boundary …
4 Forum: Speaker «» Posted on: Wed, 28 February 2007 23:50 «» By: Wayne Parham
Re: The Movement of Waves and Particles
… that represents a fraction of the spherical wavefront. Of course, things can disrupt wave propogation, causing the wavefront shape to change.Think about the wave that travels on the surface of a pool that forms when one rock is thrown in. It travels …
5 Forum: Room Acoustics «» Posted on: Thu, 13 July 2017 16:29 «» By: Wayne Parham
Re: The corners
… they won't have any early reflections. The wavefront launch is perfectly pure. No other loudspeaker configuration can do that indoors, so it sounds different than other loudspeakers. It is sort of like headphones. Speaker placement and wavefront …
6 Forum: Pi Speakers «» Posted on: Wed, 10 October 2018 21:32 «» By: Wayne Parham
Re: 7pi vs 8pi
…that they begin to act as reflectors. The wavefront launch is perturbed because the woofer is no longer acoustically close. This causes a self-interference notch in the upper-midbass to lower-midrange. Speaker placement and wavefront launchAs an aside…
7 Forum: Pi Speakers «» Posted on: Mon, 14 December 2015 16:12 «» By: Wayne Parham
Re: 7Pi plans
… If not, DI-matched mains with flanking subs are the next best thing. See these links for more information: High-Fidelity Uniform-Directivity Loudspeakers Speaker placement and wavefront launch Room modes, multisubs and flanking subs π Speakers FAQ…
8 Forum: Pi Speakers «» Posted on: Mon, 27 February 2012 21:27 «» By: Wayne Parham
Re: Baffle wall
…audiophile believe that the speakers should be far from walls - They should, unless they can be acoustically close to the boundary, which is even better. Speaker placement and wavefront launch (A visual representation on how walls affect the wavefront…
9 Forum: Speaker «» Posted on: Fri, 28 October 2011 20:55 «» By: Wayne Parham
Re: 3D Sound
…m, the basic approach Speaker placement and wavefront launch, visualization of wavefront propogation in the room Room modes, multisubs and flanking subs, for modal smoothing below 200Hz Surround speaker placement, for ambiance from the sides and …
10 Forum: Speaker «» Posted on: Thu, 25 April 2024 14:52 «» By: Barryso
Re: SBIR
…SBIR. I recently re-read your FAQ on wavefront launch and moved the speakers closer to the wall. Discovered they had less bass when their backs were up against the wall then when toed in to cross in front of the sweet spot. Kind of the exact opposite…
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