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1 Forum: Room Acoustics «» Posted on: Tue, 20 December 2011 23:44 «» By: Wayne Parham
Re: What do you think about this Pi speaker layout?
Looks good. The subs flanking the mains will smooth the upper modal range, from ~80-200Hz. In order to do that, low-pass them around 90-120Hz with a gradual slope, second-order preferrably. Let the mains run full range. If there are no noticeable lower f...
2 Forum: General «» Posted on: Wed, 07 December 2011 05:29 «» By: AudioFred
Re: Bloated Car Bass
This accounts for the tactile bass of a kick drum or low B on a bass guitar that Shane mentioned - you have to be there and experience it yourself to understand this. You can actually feel the bass, just as you would at a live rock concert. This can be...
3 Forum: General «» Posted on: Wed, 07 December 2011 00:43 «» By: Wayne Parham
Re: Bloated Car Bass
There is one very good thing that happens in cars: The absense of room modes in the bass. The pressure region goes way up high - cabin gain actually works all the way up to about 60Hz. It just isn't hard at all to pressurize a couple cubic meters and ...
4 Forum: Pi Speakers «» Posted on: Thu, 01 December 2011 11:16 «» By: Wayne Parham
Re: Subs as 3pi stands?
You can use the subs as stands, which effectively makes them the same as a three-way loudspeaker. But I wouldn't do that, for precisely the point you alluded to: Flanking subs. For them to work best, they must be a few feet away, in between the mains ...
5 Forum: Pi Speakers «» Posted on: Tue, 29 November 2011 17:48 «» By: Wayne Parham
Re: 3pi with Sonido SCW-300
The forward lobe will be right as long as driver spacing and crossover phase are right. That part is really a function of the crossover and of the midwoofer and horn position on the baffle. The stock box will work with your woofer, but as you've seen...
6 Forum: Pi Speakers «» Posted on: Fri, 25 November 2011 11:16 «» By: Wayne Parham
Re: 7pi plans
It's totally room dependant. The room sets the response below about 200Hz. And since they are designed to be used in corners, there is really no way to decouple the room response from the speaker response. If you wanted to know how they would sound ...
7 Forum: Pi Speakers «» Posted on: Wed, 16 November 2011 14:06 «» By: porfido
Re: Pi-3 in little room?
Thank you, Wayne! Really interesting topics! Could you please send me plans for Pi-3 and Pi-4? Thank you very much!
8 Forum: Pi Speakers «» Posted on: Wed, 16 November 2011 13:17 «» By: Wayne Parham
Re: Pi-3 in little room?
Yes, the four π model will work just fine as well. But do not dismiss your subs so quickly. I recommend them for all models of loudspeakers. They're not just there for added bass extension, but also for modal smoothing. This is even more important ...
9 Forum: Pi Speakers «» Posted on: Fri, 11 November 2011 23:07 «» By: Wayne Parham
Re: 6PI vs 7PI
It does have greater extension, but of course, in-room response under 200Hz is always so room specific. So understand that while anechoic response shows a deeper f3, in practice, you really are still best served with a couple of subs in addition to the ...
10 Forum: Pi Speakers «» Posted on: Wed, 09 November 2011 12:44 «» By: Wayne Parham
Re: 6 Pi
That will work. Obviously, we'd prefer a symmetrical pair of corners, but that's enough wall space to form waveguides for the range that matters - the range above the Schroeder frequency. Below that, room modes set the pattern anyway. Put subs in oppo...
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