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35 Search Results Found |
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Forum: Pi Speakers «»
Posted on: Thu, 20 September 2012 16:40 «»
By: rkeman
Six Pi Review
…midrange cabinet with a removable back panel, and the tweeter enclosure that is primarily cosmetic. The loudspeaker can be constructed as a single unit or with as separate midrange/tweeter and bass modules. Wall thickness is specified as 5/8"; …
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Forum: Pi Speakers «»
Posted on: Sun, 05 September 2010 20:35 «»
By: rkeman
3 Pi Review
…uot; and has a 2-1/2" port on the front panel. Pi Speakers offers the 3 Pi fully finished, in kit form, or as plans. A variety of driver and crossover component options are available with the basic package including an Eminence Delta 12LF woofer, …
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Forum: Room Acoustics «»
Posted on: Thu, 09 February 2012 19:18 «»
By: Wayne Parham
Re: How do I keep deep bass from the neighbors?
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The way to do it is to use panel absorbers surrounded by a thick, solid set of walls. The panel absorbers form inner walls which absorb energy. This both attenuates sound going out and damps standing waves, smoothing room modes. The outer walls block…
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Forum: Room Acoustics «»
Posted on: Sat, 08 July 2017 12:36 «»
By: Wayne Parham
Re: The corners
Corners are associated with all room modes - axial, tangential and oblique. So they are effective places to damp bass sound. But the best way to damp room modes is with panel absorbers. Look them up:
Panel Absorbers
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Forum: Pi Speakers «»
Posted on: Thu, 20 September 2012 15:05 «»
By: Wayne Parham
Re: 3Pi speakers - various questions
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I see, yes, those are panel absorbers, which are the most effective kind of damper for lower frequencies. The traditional absorbent wedges are great for HF but can't do much at LF, they're just not thick enough. But panel dampers are membranes that …
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Forum: Pi Speakers «»
Posted on: Thu, 01 September 2011 10:41 «»
By: Wayne Parham
Re: 4 Pi Home Theater Build
… absorption or diffusion. You could install panel absorbers, basically false walls that can vibrate to absorb some LF energy. But nothing like carpets or pillows or foam will help at low frequency. The best thing to do is to add subs, even better when …
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Forum: Room Acoustics «»
Posted on: Thu, 31 August 2017 13:17 «»
By: Wayne Parham
Re: The appropriate absorption technology
…used, which may be more to your point. Some people use panel absorbers for bass, others use bass traps which are cavity resonance absorbers. For higher frequencies, most use open cell foam "wedges" and other similar absorbent materials…
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Forum: Room Acoustics «»
Posted on: Wed, 15 February 2012 15:43 «»
By: Wayne Parham
Re: How do I keep deep bass from the neighbors?
…rigid surfaces on any side, so all become panel absorbers, of sorts. The walls and ceiling are drywall, which acts a little bit like a panel absorber. Even the floor is somewhat lossy, and yet, the next boundary below it is several feet away, so it …
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Forum: Home Theater «»
Posted on: Fri, 20 January 2012 09:43 «»
By: Wayne Parham
Re: Drapes or Curtains
To absorb bass frequencies, you'll need a panel absorber, like this:
"False Wall" panel absorbers
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Forum: Pi Speakers «»
Posted on: Fri, 29 April 2011 11:02 «»
By: rkeman
2 Pi Tower versus 3 Pi
…board with a double thickness front panel and flush mounted drivers. All other aspects of the design (internal volume, bracing, damping material, etc...) are to Pi Speakers specifications.
The 3 Pi's used for comparison have the B&C DE250 tweeter, …
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