I have been thinking about the configurations all based on the sphere and also 
with a a ring of 6 as recommended for horizontal fist degree configurations.
 I got Fons to make me a 2 - 6 - 2 decoder configuration,
This due to the fact that I had the height available to do a 2 meter radius 
sphere, the height have bit lower resolution. 
The best way to describe my config is that I have 2 hex ring with one speaker 
at front and back cente, shared by the second 90 degrees rotated hex ring.

Using 4 more speakers, still sharing center front and back but rotating the 2 
"hexrings" 60 degrees cuts down on the height need and gives a perfectly 
symmetrical configuration.
And results in square configurations for roof and floor speakers, and speaker 
distances being the same in the 4 - 6 - 4 configuration.

BR Bo-Erik



-----Original Message-----
From: sursound-boun...@music.vt.edu [mailto:sursound-boun...@music.vt.edu] On 
Behalf Of Bearcat M. Sándor
Sent: den 9 mars 2013 22:00
To: Surround Sound discussion group
Subject: Re: [Sursound] What speakers are you using in your Ambisonic setups?

Peter,

Thanks. Thinking of it as built like a sphere is very helpful and i can see how 
one would expand on that for more or less speakers. I mentioned the hexes 
because i'd swear i'd seen 3rd order Ambisonic setups with 3 hexes at
90 degree angles to each other. My memory is telling me that it might have been 
a recent video/article by the BBC as they were playing with the idea of 
Ambisonics for broadcast.

This was in the last year so if anyone has an update on weather they went with 
it i'd love to find out.


On Tue, Mar 5, 2013 at 4:10 PM, Peter Lennox <p.len...@derby.ac.uk> wrote:

> actually, I've always run cheap speakers! - I'd like Genelecs, or 
> something, but...
>
> I'd say, for experimenting, it's actually worth trying stuff out 
> cheap, to refine what it is you need.  If you're not packing this rig 
> with listeners, then less speakers can give you a more controllable rig.
>
> Are you aiming at 1st order, 2nd, or 3rd? - if the last, then your 3 
> rows aren't enough, but you don't need to think of it in slices like 
> that - you're stil going to have trouble getting sufficient 
> top-to-bottom angular separation.. So thing of a sphere, and work from 
> that - for arguments' sake (but others will lknow better than me) 
> instead of 3x 6, you'd be better with, say, 2, 4, 6,4,2. perhaps, even  
> 1 3 6 3 1
>
> now, subs... for 1st order resolution, horizontal onlly, you could 
> actually manage with 3.
> I've never heard of this done, but I could even see how under 
> resolution could be used to run only 2 subs, at +/- 90 deg
>
> So, it could be that just 16 channels could give you most of what you 
> want
> - but what is it you want?
> cheers
> ppl
> Dr Peter Lennox
>
> School of Technology,
> Faculty of Arts, Design and Technology University of Derby, UK
> e: p.len...@derby.ac.uk
> t: 01332 593155
> ________________________________________
> From: sursound-boun...@music.vt.edu [sursound-boun...@music.vt.edu] On 
> Behalf Of Bearcat M. Şándor [homethea...@feline-soul.com]
> Sent: 05 March 2013 21:22
> To: sursound@music.vt.edu
> Subject: [Sursound] What speakers are you using in your Ambisonic setups?
>
> -----BEGIN PGP SIGNED MESSAGE-----
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>
> Folks,
>
> I'd like to set up a 3d ambisonic system one of these days. I'm 
> thinking 3 hex rings for head-level, above and below. That's 16 
> speakers. Good studio speakers (at least good enough that i'd listen 
> to them on a stereo only
> system) are going to run me about $750 each. That's a $12k system 
> right there even without 2 8-channel D/As. Then you add in the 4 subs...
>
>
>
> What speakers are you folks running so that you can afford to do this.
>
>
> Oh, i forget that you're all mathematical scientists or professors 
> with tenure and therefore rich. Right? :"P
>
>
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