Why alpha/impression plates are called diffusors?

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Tommy666

  • Newbie
  • Posts: 1
Why alpha/impression plates are called diffusors?
« on: 27 Jan 2019, 09:30 pm »
Hi,

I'm thinking why alpha and impression series plates are called "diffusors"? Isn't it mandatory for diffusor to have different depths and/or deformed surfaces (like polyfusors)? My understanding is that alpha and impression plates simply reduces reflection area (because of holes). But I don't understand why they are called diffusors. Or am I missing something?

Also, real diffusors (QRD and skyline) must have distance to work properly. What about alpha/impression plates? Is it important to have distance from listening position or do they also work directly behind listener’s head? What do you think?

Thanks

dbeau

  • Jr. Member
  • Posts: 10
Re: Why alpha/impression plates are called diffusors?
« Reply #1 on: 1 Feb 2019, 01:52 am »
This is a good question and one which I ponder before acquiring GIK corner bass units. Certainly the wood covering is visually great (WAF) but does it diminish performance through blocking/flat reflections unidirectional?






richidoo


dbeau

  • Jr. Member
  • Posts: 10
Re: Why alpha/impression plates are called diffusors?
« Reply #3 on: 2 Feb 2019, 12:34 am »
Ricjidoo, thanks