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250 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, 01 July 2022 16:31 «»
By: Wayne Parham
Re: Small Room Suggestions
All my speakers tend to work well with boundary reinforcement, so half-space or quarter-space is best. Of course, that then gives SBIR but that's what flanking subs mitigate.
Speakers pulled far away from walls always have the benefit of no SBIR, but...
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Forum: Pi Speakers «»
Posted on: Sat, 15 January 2022 16:16 «»
By: Wayne Parham
Re: Plate amp for 3pi subs
The SPA250DSP plate amp will work just fine, and yes, you'll need the DSP version for flanking subs because it will allow you to set the low-pass filter to 12dB/octave. It will also work for distributed multisubs if you decide to add one or two of those...
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Forum: Speaker «»
Posted on: Sat, 22 May 2021 10:05 «»
By: Wayne Parham
Re: The Intellectual People Podcast - Todd Welti
Oh my God, that was funny! But seriously, I'm just a big fan of Welti and his pioneerinng work on multisubs. And your visit with him was really good. I enjoyed it.
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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: Room Acoustics «»
Posted on: Tue, 11 May 2021 12:55 «»
By: mikehende
Re: Is it safe to position a Sub facing a room's side walls?
Thanks. I looked at this thread here:
https://audioroundtable.com/forum/index.php?t=msg&goto=92847&&srch=multisubs+flanking+subs#msg_92847
and another on Flanking subs. There some terminologies there which is confusing to me tbh but if I ...
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