I still want to suggest a setup that I will soon have in operation, I have written about it before. It uses 10 channels, it is a hexagon in the horizontal plane with a speakers at front back. The Z is handled by for speakers, placed where the 4 hexagon side speakers will end up if the Hexagon is rotated 90 degrees around a axis through the front and back hexagon speakers.
Fons A has created a ambdec for me of this setup. I have the possibility to have all speakers except the 2 floor speakers permanently mounted due to my room geometry. I have the 2 floor speakers mounted on a long wooden plank letting me getting them in place quickly. I have been rethinking my amplifier setup and will now use 3 modules of 4 channel sure swiched amps instead of 2 Home theater amplifiers. The shure amp modules (4 x 100W) cost 98USD including a switched power supply, an will give 30 watts per 8 ohm speakers, I will only be using 2 power supplies so the total material cost is at the moment 3 x 44 US + 2 x 48 USD, that is less than 240 USD. http://www.parts-express.com/pe/showdetl.cfm?Partnumber=320-302 I will be using second hand Kef KHT-2005.2 "Eggs" as speakers. It is a bit of a "bother" that 10 instead of 8 channels are used, when it comes to the sound card setups... Regards Bo-Erik -----Original Message----- From: sursound-boun...@music.vt.edu [mailto:sursound-boun...@music.vt.edu] On Behalf Of Aaron Heller Sent: den 3 maj 2011 20:04 To: Surround Sound discussion group Subject: Re: [Sursound] Minim AD7 for sale On Tue, May 3, 2011 at 10:14 AM, Fons Adriaensen <f...@linuxaudio.org> wrote: > On Tue, May 03, 2011 at 07:15:29PM +0530, umashankar mantravadi wrote: >> >> in fact angelo recommended that i arrange the eight speakers as two >> crossed squares. two speakers in front and back, and four speakers >> mid bottom left and right and mid top left and right, the only >> problem is i do not see a readymade decoder > > A variation on this is an horizontal rectangle, 1 unit wide and 1.73 > deep, and a vertical rectangle in the YZ plane 1 unit high and 1.73 wide. > Or the same rotated 90 degrees. Looking from above you see an hexagon. > > This somewhat improves the rE for horizontal directions (not much), at > the expense of all others. Anything outside the +/- 30 degrees > elevation region will become very fuzzy. I had one of these set up at home for a couple of days and found it better than a horizontal hexagon. The impression of height is a welcome addition to the sense of envelopment. I had a fader set up in Bidule so you could change the Z gain to compare horizontal-only with periphonic. The entire listening panel (my son and I) preferred having the height info, but the rest of the family didn't appreciate having a couple of ladders in the living room. I also tried it with the vertical rectangle in the XZ plane. That works too. Contact me off list if you want the Ambdec config files I used. Aaron Heller <hel...@ai.sri.com> Menlo Park, CA US _______________________________________________ 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
