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2-Pi Tower floorbounce [message #60764] Fri, 04 September 2009 21:36 Go to next message
Wayne-o is currently offline  Wayne-o
Messages: 225
Registered: May 2009
Master
Does the floorbounce effect the 2-Pi tower??? thanks.
Re: 2-Pi Tower floorbounce [message #60765 is a reply to message #60764] Fri, 04 September 2009 23:24 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18790
Registered: January 2001
Illuminati (33rd Degree)

Yes, it does. You can correct it with flanking subs, otherwise, it's there. You can't have a midwoofer up off the ground without having a self-interference notch. All the single driver speakers, mini-monitors on stands and tower speakers have it. The only way to smooth it is by blending other sound sources in the upper modal range.

Re: 2-Pi Tower floorbounce [message #60768 is a reply to message #60765] Sat, 05 September 2009 06:46 Go to previous messageGo to next message
Wayne-o is currently offline  Wayne-o
Messages: 225
Registered: May 2009
Master
Around what frequency is the notch at ??? Thanks.
Re: 2-Pi Tower floorbounce [message #60769 is a reply to message #60768] Sat, 05 September 2009 07:08 Go to previous messageGo to next message
Wayne-o is currently offline  Wayne-o
Messages: 225
Registered: May 2009
Master
I Forgot ,Let me rephrase the question . At 8 feet where would the notch be at ? As always Thanks
Re: 2-Pi Tower floorbounce [message #60770 is a reply to message #60769] Sat, 05 September 2009 09:22 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18790
Registered: January 2001
Illuminati (33rd Degree)

That's key - Floor bounce interference manifests itself not only by the distance from midwoofer to ground but also the distance from source to listener. At 6-8 feet, it's around 150Hz.

The thing is, while you could smooth the notch with multiple sound sources, in practice, this is rarely done. The tower has such full bass, almost nobody considers adding subs. They would have to be blended, low-passed at 120Hz or so to be effective in smoothing floor bounce. It really works, but this approach isn't popular with owners of two π towers.

Most people like the way the two π towers sound just the way they are. It is an entry level model, after all, and I suppose if you're willing to consider upgrading to add flanking subs, it makes more sense to upgrade the mains first. I would suggest going with the three π or four π model having uniform directivity before considering an upgrade to multisubs. The two π towers could then be used in a secondary system for office or bedroom.

Re: 2-Pi Tower floorbounce [message #60772 is a reply to message #60770] Sat, 05 September 2009 11:44 Go to previous messageGo to next message
Wayne-o is currently offline  Wayne-o
Messages: 225
Registered: May 2009
Master
Does this 150 hz notch affect the 100 hz region very much ???
Re: 2-Pi Tower floorbounce [message #60773 is a reply to message #60772] Sat, 05 September 2009 12:44 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18790
Registered: January 2001
Illuminati (33rd Degree)

No, it's a pretty narrow notch.

Re: 2-Pi Tower floorbounce [message #60775 is a reply to message #60770] Sun, 06 September 2009 00:15 Go to previous messageGo to next message
Wayne-o is currently offline  Wayne-o
Messages: 225
Registered: May 2009
Master
Is there a loss in bass on the pi-tower because of the woofers height Vs. the woofer being mounted closer to the floor ? Thanks again.
Re: 2-Pi Tower floorbounce [message #60778 is a reply to message #60775] Sun, 06 September 2009 09:58 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18790
Registered: January 2001
Illuminati (33rd Degree)

No loss of bass at all. This speaker sounds very full and powerful.

Re: 2-Pi Tower floorbounce [message #63879 is a reply to message #60778] Fri, 20 August 2010 10:59 Go to previous messageGo to previous message
Wayne-o is currently offline  Wayne-o
Messages: 225
Registered: May 2009
Master
Does the 150hz notch add or take away from 150 hertz ? Thanks
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