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1 Forum: Pi Speakers «» Posted on: Sat, 15 February 2020 07:04 «» By: Barryso
Re: Low Pass
Changed the setup again. Pulled the 4 pi's away from the wall and changed the sub crossover from 60 hz to 100 hz. This is Wayne's standard 3 and 4 pi flanking sub setup except my 4's are still on the floor. Everything is more better. Better bass, t...
2 Forum: Pi Speakers «» Posted on: Tue, 14 January 2020 17:40 «» By: Wayne Parham
Re: Flanking subs
Your flanking subs should work well there. I visualize the mains on stands, toed-in 45°. The flanking subs are just outside, on the floor. Each of the mains and its flanking sub are pushed out nearly to the side wall. This is a good setup. Then put ...
3 Forum: Pi Speakers «» Posted on: Mon, 09 December 2019 10:47 «» By: Wayne Parham
Re: 4PI Plans Request
You've got mail! I agree with Barry about the JBL 2226H. It is an excellent midwoofer. The flux stabilization ring in the motor structure reduces distortion down to the levels normally only seen in horns. When combined with a horn tweeter, you have...
4 Forum: Pi Speakers «» Posted on: Fri, 04 January 2019 12:58 «» By: Wayne Parham
Re: More on subs
Very good experimentation, and useful information. Thanks for the feedback. I have almost always found that flanking subs are a first priority, and one or two distributed subs are next in priority. But sometimes the priorities switch - Rooms that ha...
5 Forum: Pi Speakers «» Posted on: Mon, 03 December 2018 17:29 «» By: Wayne Parham
Re: Amp for 4pi speakers
I would describe 100-300Hz as midrange. The fundamentals of human vocals are there; Middle C on the piano is in this range. So it isn't bass at all - It's midrange. And, yes, I think having the speakers on stands will modify the sound in this range. ...
6 Forum: Pi Speakers «» Posted on: Tue, 27 November 2018 16:47 «» By: Wayne Parham
Re: Amp for 4pi speakers
In my experience, 200Hz is about the limit of the flanking sub (helper woofer) approach. But I've blended the woofer with the mid(woofer) to ~250Hz in some loudspeakers and it has worked well. Some specialized cases, like the constant directivity cor...
7 Forum: Speaker «» Posted on: Tue, 04 September 2018 16:18 «» By: Wayne Parham
Re: Horn mouth vs. front baffle or "speaker cone"
I definitely understand what you've described. Geddes suggests placing one sub high in the air like that, specifically to deal with modal smoothing in the vertical dimension. My guess is your troublesome mode is probably in the 60-80Hz range. Partly...
8 Forum: Speaker «» Posted on: Fri, 27 July 2018 08:40 «» By: Wayne Parham
Re: Two Subwoofers
Outside and inside are very different. Outside, you want all sources to combine coherently. This means you want sound sources grouped together, and their acoustic centers aligned. When two subs are placed at each ends of a stage, bass suffers from...
9 Forum: Speaker «» Posted on: Sun, 08 July 2018 11:57 «» By: Wayne Parham
Re: Subwoofer Setup
That's great to hear, Barry. Thanks for the feedback! As you and I have discussed, I'm a big proponent of multisubs but I consider the flanking sub aspect to be an additional requirement. I think that distributed multisubs by themselves only solve p...
10 Forum: Pi Speakers «» Posted on: Sat, 19 May 2018 12:41 «» By: Wayne Parham
Re: DSP for subwoofer(s)
You're right - the main thing is number and placement of subs. I understand that you want to use a DSP crossover because it gives you the ability to choose any crossover point and slope you want, so will be easy to set the requisite ~90Hz second-order...
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