John, It really depends on how many sources you will have. Usually there are enough outputs on a Gentner/ClearOne - an XAP gives you 12 - but you may run out of inputs. Again there are 12, of which 8 can use the echo canceller (and other) features and the remaining 4 can just be routed and faded in/out onto the outputs.
If you have 6 mics (e.g. 4 audience, 1 podium, 1 radiomic), that takes up 6 of your 'mic' inputs (fully featured) channels. Input and output to the AG system will take up 2 more ins and outs, although the ins can be on simple inputs. That leaves you just 4 ins (2 full, 2 simple). If you want to put raw 5.1 input through the system, you're stuffed! If you want to put matrixed 5.1 through, and split out to 5.1 afterwards, you're OK, but that makes it harder to control the speakers - you might land up with a 5.1 speaker system AND a stereo speaker system for AG. You could look at an expansion unit (I think it has a model number with 1212 in to, which gives you an idea how many ins and outs it adds) and if you route the extra ins to the groups (I forget what Gentner/ClearOne call them) they are shared with the XAP800, IIRC. We've just done something similar (although without 5.1 sound) for a room where the XAP800 is shared between the general AV and VC required for the room, and the AG. We needed a small (control-less) mixer to bring sources together (VCR, DVD etc..) that would not be used simultaneously. It feeds a single pair of Gentner inputs. HTH Cheers Chris ____________________________________________________________________ Chris Osland Office tel: +44 (0) 1235 446565 Digital Media and Access Grid Medialab tel: +44 (0) 1235 446459 BIT Department Access Grid room tel: +44 (0) 1235 445666 e-mail: c.d.osl...@rl.ac.uk Fax: +44 (0) 1235 445597 CCLRC Rutherford Appleton Laboratory (Bldg. R18) Chilton, DIDCOT, Oxon OX11 0QX, UK [The contents of this email are confidential and are for the use of the intended recipient only. If you are not the intended recipient do not take any action on it or show it to anyone else, but return this email to the sender and delete your copy of it.] > -----Original Message----- > From: owner-ag-t...@mcs.anl.gov [mailto:owner-ag-t...@mcs.anl.gov]On > Behalf Of John I Quebedeaux Jr > Sent: 24 January 2005 19:56 > To: ag-tech > Subject: [AG-TECH] 5.1 audio and AG > > > Hi all, > > For those who are audio gurus - to this non-audio guru (not even at > home) - I have a professor interested in dropping an AG room into his > training/class room and I'm helping spec out for the budget. > What I can > not get straight in my head is how I will have a sound system (5.1 - > such as http://www.genelecusa.com/news/powerpak_8000.php and an echo > canceler (XAP800 for example, which is what i'm famliar with) > setup so > that the class can experience whatever audio (from DVD, etc) and then > use the same speakers/system for AG audio. I.e. this is a > classroom as > well as an AG room. I'm looking into the projection system, > etc now as > well... > > It's not clear to me if I need an additional mixer board or something > or if i'll already have what i need. > > Questions and comments and help appreciated if anyone can help me > understand better, > > Thanks, > > John Q. > > -- > John I. Quebedeaux, Jr. > Louisiana State University > Computer Manager / LBRN & CCT / 131 Life Sciences Bldg. & 339 > Johnston > Hall > e-mail: jo...@lsu.edu or jo...@cct.lsu.edu / web: http://lbrn.lsu.edu & http://cct.lsu.edu phone: 225-578-0062 / fax: 225-578-2597
