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...@math.ucla.edu > To: sursound@music.vt.edu > Subject: 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 hard to dummy up such a speaker yourself. > If you cut out twelve regular pentagons and bevel their edges > at the correct angle , (dihedral angle of dodecahedron is 116.6 > degrees) they will > fit together in a uniquely determined and very rigid structure > and then you just need to cut hole for the drivers and install > suitable drivers. > And you can put tweeters at the midpoints of the (twenty) > edges to get a uniform patter. Then you just need to > adjust the level of the woofer/mids relative to the tweeters > (there are more tweeters than woofers) and bingo, plus > add a subwoofer which will be omni automatically. > More than an afternoon but less than a week of construction time > I would guess. > > Have fun! > Robert > > On Fri, 19 Oct 2012, Paul Hodges wrote: > > > --On 19 October 2012 07:41 -0700 Robert Greene <gre...@math.ucla.edu> > > 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 be of considerable > > interest. Second to them would be any speakers whose polar pattern was > > pretty much uniform with frequency. > > > > Paul > > > > -- > > Paul Hodges > > > > > > _______________________________________________ > > Sursound mailing list > > Sursound@music.vt.edu > > https://mail.music.vt.edu/mailman/listinfo/sursound > > > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20121020/255e5473/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
