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40 Search Results Found |
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Forum: Pi Speakers «»
Posted on: Fri, 12 July 2024 15:15 «»
By: Wayne Parham
Re: Retrofitting Altec 612 cabinet for a 4pi build
I wouldn't change the dimensions of the cabinet for these reasons (from the Pi Speakers FAQ):
Cabinet design, port placement and internal standing waves
Damping material placement
Altering Dimensions
I realize you are talking about reducing the inter...
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Forum: Speaker «»
Posted on: Thu, 25 April 2024 14:53 «»
By: Wayne Parham
Re: SBIR
Oh, wow, isn't that something?!!
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Forum: Speaker «»
Posted on: Thu, 25 April 2024 14:52 «»
By: Barryso
Re: SBIR
Thanks Wayne.
Turns out what I'm trying to figure out doesn't have anything to do with SBIR.
I recently re-read your FAQ on wavefront launch and moved the speakers closer to the wall. Discovered they had less bass when their backs were up against th...
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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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