Re: [Sursound] Spherical speakers ?

Again with txt only (thank you Martin) The late Dick Campbell designed a dodecahedron loudspeaker. Close? http://users.rcn.com/rhcamp/dodec45.pdf NeilA ___ Sursound

Re: [Sursound] Spherical speakers ?

there is a simpler way. http://www.thingiverse.com/thing:24308 you have to build yourself a 3d printer. getting it made on shapeways will cost too much. umashankar i have published my poems. read (or buy) at http://stores.lulu.com/umashankar > Date: Fri, 19 Oct 2012 17:17:50 -0700 > From: gre.

Re: [Sursound] Spherical speakers ?

> I mean that instead of a cone there is a sphere, and able to emit sound in > all directions I'm guessing if it hasn't been done its because it presents > considerable technical difficulties - still ... There are no serious difficulties as long as size & $$ are not constraints. But apart from

Re: [Sursound] Spherical speakers ?

OK. For this purpose (where power response is the main point) the dodecahedral speakers would work fine. Their difficulty for eg stereo use--that they bounce sound all around the room and also have oddball lobing effects would be irrelevant(or in the former instance useful) It would not be too h

Re: [Sursound] Spherical speakers ?

Augustine Leudar wrote: > Hi Neil and Marcia, > I couldn't open that link. > > On 19 October 2012 02:56, Neil & Marcia Adams > wrote: > >> An HTML attachment was scrubbed... >> URL: < >> https://mail.music.vt.edu/mailman/private/sursound/at

Re: [Sursound] Spherical speakers ?

--On 19 October 2012 07:41 -0700 Robert Greene wrote: > there is no real reason to want such a thing. I have an electronic chamber organ; in order to excite the acoustic of the hall or church where I am using it in a manner comparable with a chamber organ with pipes I think such speakers would b

Re: [Sursound] Spherical Speakers ?

ursound mailing list >>> Sursound@music.vt.edu >>> https://mail.music.vt.edu/**mailman/listinfo/sursound<https://mail.music.vt.edu/mailman/listinfo/sursound> >>> >>> >> __**_ >> Sursound mailing list >

Re: [Sursound] Spherical speakers ?

Such a thing was offered for sale for consumers by DBX(as I recall) a long time ago. I do not think it had much success--not surprisingly since there is no real reason to want such a thing. Robert On Fri, 19 Oct 2012, Fabio Kaiser wrote: Google for dodecahedron loudspeakers. There you'll find

Re: [Sursound] Spherical speakers ?

There are true omni directional speakers, made by MBL , quite expensive. These work by having a whole surface that expands and contracts --a sort of lens shaped thing that is pushed in and out by compression of the ends. Hard to arrange--hence expensive. But they do have an essentially spherical

Re: [Sursound] Spherical speakers ?

I remember seeing a DIY panel loudspeaker where element was places in the base of the loudspeaker, The panels where expanding / shrinking the panel by pumping air through a slit from the base. The panels where placed over a rectangular frame, maybe a more balloon formed frame can be constructed.

Re: [Sursound] Spherical speakers ?

Google for dodecahedron loudspeakers. There you'll find some results. These kind of loudspeakers are used in room acoustic measurements. To goal is to excite the room without directional preference. But mostly the single speaker chassis cannot be driven independently. Nils already mentioned th

Re: [Sursound] Spherical speakers ?

cia, > I couldn't open that link. > > On 19 October 2012 02:56, Neil & Marcia Adams > wrote: > > > An HTML attachment was scrubbed... > > URL: < > > https://mail.music.vt.edu/mailman/private/s