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37 Search Results Found |
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Forum: Speaker «»
Posted on: Sat, 13 April 2024 09:11 «»
By: Wayne Parham
Re: SBIR
That creates a notch around 80Hz to 120Hz from SBIR, which is very common. Most people place speakers about this far from the wall behind them, so the SBIR notch in this frequency range is very common. Scan the internet for in-room response charts and ...
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Forum: Speaker «»
Posted on: Fri, 12 April 2024 14:13 «»
By: Barryso
SBIR
Curious about speaker boundary interference. In most illustrations they show the distance from the front baffle of the speaker to the wall. A few calculations later you have the frequency where the null happens.
But my 4 pi's aren't flat against the w...
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Forum: Pi Speakers «»
Posted on: Mon, 15 January 2024 10:37 «»
By: Wayne Parham
Re: Definimax 4012HO - End of Life
I don't remember specifically what made me pass on the Faital drivers for three Pi model, because I looked at many midwoofers back then.
In many cases, the problem that keeps a driver "off the table" is the basic electro-mechanical stuff. T...
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Forum: Pi Speakers «»
Posted on: Thu, 02 November 2023 16:14 «»
By: Wayne Parham
Re: 3Pi plans and questions
You've got mail!
You can buy waveguides and crossovers from us.
I wouldn't suggest modifying cabinet dimensions unless you can do acoustic measurements to verify there is no regression from the changes. The thing to watch out for is lower-midrange...
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Forum: Pi Speakers «»
Posted on: Fri, 09 June 2023 22:57 «»
By: Wayne Parham
Re: speaker plans 4 pi
That's awesome! Hope it was a good deal for both you and the seller.
The deal with the center channel is the port can be removed for aesthetics. There isn't a benefit when doing so, in fact, there's a slight penalty. But only slight. The spectral ...
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Forum: Pi Speakers «»
Posted on: Thu, 06 April 2023 18:33 «»
By: Wayne Parham
Re: Am I in the Right Place?
Going a little larger - to 5ft3 - adds a smidge more bass and remains properly damped. You can model it and see what I mean, or build a physical model and measure it. Going smaller reduces bass output, but again, remains properly damped. So that's a u...
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Forum: Pi Speakers «»
Posted on: Wed, 15 March 2023 09:41 «»
By: Wayne Parham
Re: Pi3 vs Pi4
The posted measurements are for the fully upgraded models, but the differences in response aren't major. The benefit of upgraded midwoofer drivers is mostly reduced distortion because the upgraded drivers have shorting rings.
That's not the case with...
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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: Measurement «»
Posted on: Tue, 30 August 2022 13:46 «»
By: Wayne Parham
Re: Crossover slopes
It's really just a guess without measurements. But it does sound like they intended to run the subwoofer up pretty high to match their mains. So it might just work as a flanking sub.
One thing you can do without measurements is to run the sub by its...
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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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