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164 Search Results Found |
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Forum: Speaker «»
Posted on: Tue, 05 April 2011 15:24 «»
By: Wayne Parham
Room modes, multisubs and flanking subs
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When I first considered the multisub approach, it was prompted by papers written by Todd Welti. He did several tests that showed in-room amplitude response could be made smoother using multiple subs, and gave specific guidance about placement. His …
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Forum: Pi Speakers «»
Posted on: Mon, 24 October 2011 17:36 «»
By: Wayne Parham
Re: Helper Woofer Location
…as the mains they're flanking. Distant multisubs get a summed signal, usually low-passed at a fairly low frequency around 50Hz to 60Hz.
I like flanking woofers to be at least a couple feet away, but not more than about four feet away. More distant …
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Forum: Home Theater «»
Posted on: Mon, 06 November 2017 10:51 «»
By: Wayne Parham
Re: The subwoofer volume and crossover
…a little lower than that. Distributed multisubs are always used below 100Hz but usually below 80Hz and sometimes even lower, in the 50Hz to 60Hz range.
In many system setups, mains are blended with flanking subs deeper than 100Hz. They're often …
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Forum: Pi Speakers «»
Posted on: Wed, 23 January 2013 11:57 «»
By: Wayne Parham
Re: Flanking Subs vs Helper Woofers
…was Earl Geddes, who did a talk on multisubs:
SMWTMS Meeting, January 19, 2013 (That's Southeastern Michigan Woofer and Tweeter Marching Society, if you're curious.)The whole meeting was recorded, and it's about two hours long. Earl gives his talk …
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Forum: Room Acoustics «»
Posted on: Wed, 04 October 2017 15:59 «»
By: Wayne Parham
Re: Small-room acoustics
…dea:
1. Symmetrically-placed distributed multisubs
2. Asymmetrically-placed distributed multisubs
3. Flanking subs
Each of these ideas have merits, and some can be used mix-and-match. The basic idea is to have multiple bass sound sources, and …
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Forum: Pi Speakers «»
Posted on: Mon, 22 August 2022 18:33 «»
By: Wayne Parham
Re: My 3π adventure
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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 …
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Forum: Pi Speakers «»
Posted on: Mon, 14 January 2013 17:11 «»
By: Wayne Parham
Re: Subwoofers vs budget... where do you draw the line?
…ins, then just run three or four distributed multisubs.
Flanking subs go in a fixed place, a couple feet below, beside and behind the mains. But distributed subs are a little more flexible. Basically, you just want to put them "around the room&…
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Forum: Pi Speakers «»
Posted on: Fri, 11 October 2019 13:16 «»
By: Wayne Parham
Re: Definimax 4012HO - End of Life
…get more benefit from distant distributed multisubs. The content below 60Hz from flanking subs is useful for extension, but doesn't help much with modal smoothing. Again, modal smoothing below 60Hz is achieved by distributed multisubs.
Baffle step …
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Forum: Pi Speakers «»
Posted on: Fri, 30 November 2018 09:40 «»
By: Wayne Parham
Re: Amp for 4pi speakers
…- but below 60-80Hz is where distributed multisubs work best.
Your measurements show a perfect example of what the flanking sub configuration does:
Without flanking subs:
With flanking subs:
As for over-representation in the 100-300Hz …
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Forum: Pi Speakers «»
Posted on: Sat, 29 December 2012 09:09 «»
By: Wayne Parham
Re: Flanking Subs vs Helper Woofers
…are used in conjunction with distributed multisubs for best results.
What I don't understand, is how anyone can use distributed multisubs and not include flanking subs. It's like getting your car's wheels aligned but then running underinflated tires…
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