Planar Speaker Asylum

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Planar Speaker Asylum

RE: Alternative setup of dipoles in a living room

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In Reply to: RE: Alternative setup of dipoles in a living room posted by FX35 on August 28, 2024 at 00:00:53

Right!

The nearfield is here within a close range.
Distance from ear to speaker is 60 to 70cm.

Width is about 120 degrees which is wider than the normal 60 degrees. That's like in first seat row in concert hall.

Here, soundstage, imaging and depth from good recordings sounds great.

If less concentrated listening, the chair is pulled back a bit.

Regards
Lars

Follow Ups:

Is this the effect you have in mind? - farfetched 09:20:32 08/28/24 (4)
I have a pair of LRS's in a basic 3rds setup in a 17x12 room. Speakers are about 4 feet or so into the room; listening chair is about 5 feet from the speaker plane. Very basic. I use my LRS's tweeters out and facing full forward, no toe in.

If I use a very short stool (or sit cross legged) in or just slightly behind the speaker plane, a notably vivid soundstage forms from the backwall reflection. This soundstage operates differently from how it normally works (it is entirely inside the speaker plane, miniaturized somewhat) but is uncanny in its 3d image.

My ears are about 40 cms from each speakers in the low stool listening position, I just measured.

Is this the basic effect? I tried sitting slightly in front of the speaker plane and it is wider. But if you listen on the speaker plane or a little behind it, the backwall dominates entirely.

.
/ optimally proportioned triangles are our friends
- RE: Is this the effect you have in mind? - Ronnhedh 10:08:47 08/28/24 (3)
  You write "notably vivid soundstage forms from the backwall reflection."
  
  Inmy setup, reflections are below -20dB the audio signal. So in this nearfield (above 300Hz) you hear no refletions from the room. You hear only what is recorded.
  - So front speakers are not firing straight ahead? (nt) - farfetched 13:02:02 08/28/24 (2)
    .
    / optimally proportioned triangles are our friends
    - RE: So front speakers are not firing straight ahead? (nt) - Ronnhedh 19:42:06 08/28/24 (1)
      A picture tells more than words!
      
      The different setup of front speakers ELS line sources with elements from ER Audio versus Magnepan 3.6. With the ELS line sources the listening distance can be much closer 0,7meters versus 2meters. Offcourse, it is only temporary for comparison. The Magnepans have been refurbished with new wooden fronts.
      
      It's important to understand that short listening distance require speaker elements that cover the full range above the Schroeder range, that is approx. in the range of 6 octaves. This require some narrow planars or coaxial's.
      I am aware of elements like GRS PT6825-8 Planar Mid/Tweeter, ER Audio 505 or coaxials like KEF LS50 etc.
      - Now I see, and it does work - farfetched 05:42:35 08/29/24 (0)
        
        In Reply to: RE: So front speakers are not firing straight ahead? (nt) posted by Ronnhedh on August 28, 2024 at 19:42:06
        
        Ok, you have them tilted in. The picture confirms I do know what you are getting at though.
        
        If I sit (in the low stool) a foot *in front* (in other words, moving my listening chair from 5 feet to one feet, and lowering the chair to using a short stool) of my speaker plane, I get a very rich field of sound that is not dominated by the backwall reflection.
        
        A foot away, my ears are 50-60 cm from the speaker panel. At my usual modest volume level, I think I "see" what you are hearing.
        
        It's very workable even as a simple stereo plan. I don't need to toe them in toward me, and still got a fulsome sound field.
        
        "Immersive" is the word I would use.
        
        I normally sit at 5-6 feet distance. But sometimes I move to 4 feet. It's a continuous effect.
        
        Happy listening. I hear you about age. Very much so. I lost cicadas this year.
        
        / optimally proportioned triangles are our friends

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