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Re: for all you high end surround heads out there

Subject: Re: for all you high end surround heads out there
From: Walter Knapp <>
Date: Sat, 19 Jun 2004 10:52:54 -0400
From: Lang Elliott <>
> 
> Walt:
> 
> Sounds like the magnaplanes are a whole different ball of wax. Seems like
> they certainly could fill a room with sound. And it also seems like the
> sweet spot would be large. But for the life of me, I can't imagine how
> imaging of sound sources would remain accurate as one moves all around,
> because imaging is definitely related to time arrival differences at the two
> ears, along with intensity differences, which necessitates, it seems, point
> sources. Or else my brain just isn't able to grasp what you're describing.
> My guess is that it would be an immensely eveloping experience, with a big
> sweet spot, but with poor imaging of sound sources.

> Maybe I'm wrong . . . but I guess I'll never know because I certainly can't
> afford to experiment with it.

I can't afford to experiment either. I've two very old, fairly small 
magnaplanes. And don't expect to get more. In any case to do this one 
right would require building a room just for it.

 From my own listening and experimenting with the magnaplanes I would 
say that the imaging (in stereo) is far better than you'd expect. I've 
heard a regular style surround magnaplane, and the imaging there was as 
good as the source material. My original comment was that the 
magnaplanes could very well be worthwhile to try with your 4 channel 
surround. I've not done that, obviously, so cannot predict for sure the 
outcome. I expect it would be very good, better than with standard speakers.

It could be that the area source is so enveloping that you don't need as 
precise a point for good imaging. It is different, as you say a 
different ball of wax. I can observe how they behave, I can't get into 
the math of why.

One of the problems I'd have with your system, from my own experience, 
is that I'd hear it as 4 point sources. I always hear regular speakers 
that way, even more so with the current crop compared to, say, the 70's 
speaker systems. And you are recording sound coming in from all 
directions, so it should not be just 4 points. It's part of what got me 
interested in the magnaplanes in the first place.

Walt




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