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495 Search Results Found |
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Forum: Pi Speakers «»
Posted on: Sat, 24 September 2022 15:51 «»
By: Wayne Parham
Re: Subwoofer amp and crossover
I would suggest using a flanking sub approach. Do a search for "flanking subs" here and on the internet at large. Lots of good information about it.
To describe in a nutshell, flanking subs are basically stereo subs with specific placement...
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Forum: Pi Speakers «»
Posted on: Tue, 23 August 2022 14:29 «»
By: Wayne Parham
Re: My 3π adventure
I agree with you generally about almost everything you said except the part about time alignment. This is impossible in the modal region.
Outdoors, you want sound sources acoustically close together - within 1/4λ of each other - and the electrical si...
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Forum: Pi Speakers «»
Posted on: Tue, 23 August 2022 09:09 «»
By: Wayne Parham
Re: My 3π adventure
I meant to add some comments about the Helmholtz frequency in each of my responses above, but forgot. It was more important to me to discuss the use of flanking subs and multisubs, and the reasons for needing them. So I became involved in those respons...
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Forum: Pi Speakers «»
Posted on: Mon, 22 August 2022 18:33 «»
By: Wayne Parham
Re: My 3π adventure
I like symmetrical multisubs, which is a Welti arrangement. You can use such an arrangement and also include flanking subs.
Place the mains with flanking subs outboard. They are just a little behind, beside and below the mains. They are stereo subs...
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Forum: Pi Speakers «»
Posted on: Mon, 22 August 2022 17:01 «»
By: Wayne Parham
Re: My 3π adventure
Measured in-room, I think your response curves are pretty good. This is typical in-room response. Looks to me like all is working as designed.
In-room measurements show the room more than they do the speakers. But having a waveguide speaker really ...
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Forum: Pi Speakers «»
Posted on: Fri, 28 January 2022 12:13 «»
By: Wayne Parham
Re: 4Pi - alternate compression driver mounting?
The quality of your environment will be reflected in the quality of your measurements. Oh, such a pun in that sentence.
For measurement charts that will be published, I would recommend no less than 30 feet of unobstructed reflection-free area. O...
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Forum: Home Theater «»
Posted on: Tue, 14 December 2021 09:15 «»
By: Wayne Parham
Re: Home Theater for the Outdoors
Actually, outdoors, one thing in your benefit is there are no room modes. And if your setup is far enough away from buildings, then there are no early reflections. That's a significant advantage, acoustically. Of course, you'll probably need more powe...
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Forum: Home Theater «»
Posted on: Mon, 06 December 2021 09:02 «»
By: Wayne Parham
Re: I want to convert my basement
If your basement has all concrete walls, you will definitely want to invest in some room treatments. I would line the walls with panel absorbers. Otherwise, you'll have worst-case room modes and lots of MF and HF reflections too. The acoustics in a ba...
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Forum: Pi Speakers «»
Posted on: Sun, 16 May 2021 09:16 «»
By: Wayne Parham
Re: four Pi and subs
Compression driver changes sometimes need different R1/R2 values to match voltage sensitivity. The amplitude and polar response is set by the waveguide, which is has much more influence than the driver.
The only things set by the driver are mass-roll...
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Forum: Pi Speakers «»
Posted on: Fri, 26 February 2021 16:28 «»
By: Wayne Parham
Re: Downfiring flanking subs ??
What you're describing may work well. It's definitely better to have the flanking subs near the boundary than it is to have them near the mains they're flanking. This is counter-intuitive, I know, and it would not be true outdoors where we would want t...
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