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141 Search Results Found |
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Forum: Speaker «»
Posted on: Sun, 17 July 2016 11:16 «»
By: Wayne Parham
Re: Mono "flanking sub"
Delay is equivalent to making the distance further in one dimension. So naturally, this changes the frequency where self-interference cancellation happens.
The thing is, our goal is not achieved by this. We need to create dense interference by incre...
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Forum: Speaker «»
Posted on: Fri, 15 July 2016 10:25 «»
By: Wayne Parham
Re: Mono "flanking sub"
Self-interference notches are very apparent in measurements. And they line up exactly as you would expect: At the frequency where path length distance causes a 180° shift, you'll see a 10dB to 20dB notch.
As for subwoofer volume, setting is pretty e...
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Forum: Speaker «»
Posted on: Fri, 15 July 2016 08:36 «»
By: Wayne Parham
Re: Mono "flanking sub"
Each of the boundaries creates a self-interference notch. The wall behind the speakers makes a notch that is nearly fixed in frequency, because the path lengths between the direct sound and the reflection are nearly consistent even when the listener mov...
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Forum: Speaker «»
Posted on: Thu, 14 July 2016 15:00 «»
By: Wayne Parham
Re: Mono "flanking sub"
Let's say your mains are 2.5 feet away from the wall behind them, creating a self-interference notch at 110Hz. If the flanking sub is somewhere closer to the back wall - say one foot away - and it is presented the exact same signal, then it will reduce ...
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Forum: Speaker «»
Posted on: Thu, 14 July 2016 13:40 «»
By: Wayne Parham
Re: Mono "flanking sub"
I have realized over the last decade or so that it always helps to add bass sound sources, up to about four where we start to see diminishing returns. But even beyond that, there are improvements. I have also learned that placement matters most when th...
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Forum: Speaker «»
Posted on: Mon, 30 November 2015 10:31 «»
By: Wayne Parham
Re: Mono "flanking sub"
Never apologize for asking questions here. That's what AudioRoundTable.com is for!
The thing is, flanking subs are a specialized type of multi-sub. Each flanking subwoofer is supposed to be placed two to three feet below, beside and behind a main sp...
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Forum: Speaker «»
Posted on: Mon, 09 November 2015 21:14 «»
By: Wayne Parham
Re: Mono "flanking sub"
You can always provide equalization to fine-tune the response. That sometimes offers additional improvement. But the biggest advantage is from summing of multiple sound sources, which smoothes the sound field using dense interference. That's the point...
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Forum: Speaker «»
Posted on: Mon, 09 November 2015 12:57 «»
By: Wayne Parham
Re: Mono "flanking sub"
We can see that the flanking sub approach is smoothing the mains through reduction of the notch around 95Hz - 100Hz. This is largely because of the sub's physical relationship to the mains - Even though there's just one helper woofer, it's still a coup...
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Forum: Speaker «»
Posted on: Sat, 31 October 2015 15:37 «»
By: Wayne Parham
Re: Mono "flanking sub"
Self-interference notches are from room reflections. The speakers measure flat outdoors.
The whole concept of multisubs - which flanking-subs are a specialized type - is to create dense interference that smoothes the average sound field. This requir...
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Forum: Speaker «»
Posted on: Fri, 30 October 2015 16:37 «»
By: Wayne Parham
Re: Mono "flanking sub"
Flanking subs are run pretty high - over 100Hz. They're a specialized application that's not unlike the helper-woofer of a 2.5-way speaker system. The thing that makes 'em unique is they are able to be offset from the mains in all three planes, so they...
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