There is only a minimum distance required between antennas (about 5") but they work best as long as they are about 3' apart. Other than that there is no requirement that the be equidistant or matched in any way. They only need to be in range and generally closer to the transmitter is better than farther from it.
If these will be used with actors I would recommend you start with one upstage near the center and one in the wings (either one). As always you should walk test the system.
Do the actors ever leave the stage?
Thanks for your reply! So there's no need to match the antennas any more. That's good.
But what about the tradeoff between closer placement to the actors (mostly speakers) with much longer cable runs (80') versus short cable runs (15') with antennas placed more distant away from stage (at FOH). Cause the receivers would be placed at FOH and to place one antenna in the back of the stage, you need to go all the way through the room along the sidewalls...
Is it something I can calculate myself using the cable loss and the antenna gain or are there general recommendations?
Or just try and error? We
Take a look at our guide to antenna setup ... http://l6c.scdn.line6.net/data/l/0a06434d162524dcad0a0c6112/application/pdf/XD-V70%20Antenna%20Setup%20(Rev%20C)%20-%20English.pdf.
It's usually better to run long audio cables than long antenna cables.
OK, thanks for your help!
I already knew the antenna setup guide, that's why my quesions came up. But I think I'll have to try the best placement as there seem to be no measurements regarding this topic.