Well, they spent a year outside in Seville (not known for being cold), then it was moved to Eminönü Square, Istanbul where it spent another long period in hot (and salty) air, then it moved to Vienna, which is quite cold (!) at times - now it's in Karlsruhe. The speakers seemed to do okay so I would be more than happy to specify them again. But I know what you mean about "it would have to be a well funded project" - fortunately it was, I think moving it from site to site alone cost €250,000 a pop. Fun to do but I'm glad I didn't have to worry about the finances :-)
Dave On 29 June 2017 at 18:54, Augustine Leudar <augustineleu...@gmail.com> wrote: > They look nice Dave - it would have to be a well funded project to afford > them though. I also wonder whether they could survie the sauna test for > years..... humidity and heat being the main problems. > > On 29 June 2017 at 18:30, Dave Malham <dave.mal...@york.ac.uk> wrote: > > > If you don't mind using analog audio, Meyer do some very nice, waterproof > > powered speakers (MM-4XP). They use a specially designed cable which > > carries balanced audio and DC power. The connector is a bit fiddly to > wire > > up and they are not cheap but we got very good results from them in the > > Morning Line project ( > > https://www.wallpaper.com/architecture/the-morning-line- > > sonic-temple-istanbul > > ) > > > > Dave > > > > > > On 29 June 2017 at 17:48, Marc Lavallée <m...@hacklava.net> wrote: > > > > > > > > The limit is actually more like 13W per device, according to: > > > https://fr.wikipedia.org/wiki/Alimentation_%C3%A9lectrique_ > > > par_c%C3%A2ble_Ethernet > > > A Raspberry Pi and a DAC would use 5 to 6W, leaving 7-8W to a D-amp. > > > With efficient loudspeakers (and a few of them), 6W could enough > > > for a small public installation. > > > > > > A hackish alternative would be to use only 2 pairs of a CAT5 cable > > > for a 100BT link (which is enough to stream audio), and use the 2 other > > > pairs to transmit power (as much as required). > > > > > > Running speaker wires is also a valid solution... > > > > > > -- > > > Marc > > > > > > > > > On Thu, 29 Jun 2017 09:10:12 -0700, mgra...@mstvp.com wrote: > > > > > > > Hi, > > > > > > > > This is an interesting discussion. Common, 802.3af P.O.E. is limited > > > > to 15w. Fine for a Raspberry Pi, DAC or DSP, but not enough for much > > > > amplification. > > > > > > > > Michael Graves > > > > mgra...@mstvp.com > > > > http://www.mgraves.org > > > > o(713) 861-4005 > > > > c(713) 201-1262 > > > > sip:mgra...@mjg.onsip.com > > > > skype mjgraves > > > > > > > > > > > > --------- Original Message --------- Subject: Re: [Sursound] > > > > Multichannel players for permanent installations From: "Dave Hunt" > > > > <davehuntau...@btinternet.com> Date: 6/29/17 11:04 am > > > > To: sursound@music.vt.edu > > > > > > > > Hi, > > > > > > > > I think that you'll find that an active speaker with an AVB input > > > > will require more current than can be supplied over an ethernet > > > > cable. Perhaps for very small speakers with a low power digital > > > > amplifier, but anything decent would require mains (or DC batteries) > > > > to the speaker. > > > > > > > > The available current may power the DAC though. > > > > > > > > Ciao, > > > > > > > > Dave > > > > > > > > > From: Augustine Leudar <augustineleu...@gmail.com> > > > > > Date: 28 June 2017 22:06:52 BDT > > > > > To: Surround Sound discussion group <sursound@music.vt.edu> > > > > > Subject: Re: [Sursound] Multichannel players for permanent > > > > > installations > > > > > > > > > > > > > > > Hi Richard - > > > > > There is lots of things that pan all around the room but the > > > > > soundscape is > > > > > designed in pre production for this installation and then its just > > > > > a multichannel file (or seperate mono ones). Other installations I > > > > > do are > > > > > interactive and so sounds are processed and panned in realtime > > > > > around the > > > > > space depending on the sensors used etc. Certainly the AVB thing > > > > > might be > > > > > good for some less inhospitable environments- I especially like > > > > > the way > > > > > power can be taken to the the speakers via the ethernet > > > > > cable..... > > > > > > > > -------------- next part -------------- > > > > An HTML attachment was scrubbed... > > > > URL: > > > > <https://mail.music.vt.edu/mailman/private/sursound/ > > > attachments/20170629/0e011d85/attachment.html> > > > > _______________________________________________ Sursound mailing > list > > > > Sursound@music.vt.edu > > > > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe > > > > here, edit account or options, view archives and so on. > > > > -------------- next part -------------- An HTML attachment was > > > > scrubbed... URL: > > > > <https://mail.music.vt.edu/mailman/private/sursound/ > > > attachments/20170629/3bffefc0/attachment.html> > > > > _______________________________________________ Sursound mailing > list > > > > Sursound@music.vt.edu > > > > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe > > > > here, edit account or options, view archives and so on. > > > > > > _______________________________________________ > > > Sursound mailing list > > > Sursound@music.vt.edu > > > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe > here, > > > edit account or options, view archives and so on. > > > > > > > > > > > -- > > > > As of 1st October 2012, I have retired from the University. > > > > These are my own views and may or may not be shared by the University > > > > Dave Malham > > Honorary Fellow, Department of Music > > The University of York > > York YO10 5DD > > UK > > > > 'Ambisonics - Component Imaging for Audio' > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: <https://mail.music.vt.edu/mailman/private/sursound/ > > attachments/20170629/9313e37c/attachment.html> > > _______________________________________________ > > Sursound mailing list > > Sursound@music.vt.edu > > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, > > edit account or options, view archives and so on. > > > > > > -- > Augustine Leudar > Artistic Director Magik Door LTD > Company Number : NI635217 > Registered 63 Ballycoan rd, > Belfast BT88LL > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: <https://mail.music.vt.edu/mailman/private/sursound/ > attachments/20170629/713128d5/attachment.html> > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, > edit account or options, view archives and so on. > -- As of 1st October 2012, I have retired from the University. These are my own views and may or may not be shared by the University Dave Malham Honorary Fellow, Department of Music The University of York York YO10 5DD UK 'Ambisonics - Component Imaging for Audio' -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20170630/c0886846/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
