its not the heat Dave - its the humidity (100 percent) that destroys speakers , that and the ants . Who funded that ?
On 30 June 2017 at 13:23, Dave Malham <dave.mal...@york.ac.uk> wrote: > 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. > -- Augustine Leudar Artistic Director Magik Door LTD Company Number : NI635217 Registered 63 Ballycoan rd, Belfast BT88LL -------------- next part -------------- An HTML attachment was scrubbed... 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