I'm gonna make a few diy extra more "special modifications myself" as god will be booming though the letterbox between 9:45am and 11am? So I have to prepare for the event of 2014.
I have an extra 5th JBL control 5 for the x4 on the ceiling.
I had a diy idea some 10 years ago I think I called it "crossover surround" nothing to do with passive/active crossover networks. Its a bit complicated but what was on had at the time regards to matrix processors, it would be tricky. To get the 4 typical corner speakers front/rear with pans to half pan phnaoms to appear in new channel located in the middle of the ceiling without the sound collapsing on its self. It would require some 4 matrix decoders.
Well I had discovery breakthrough with another diy matrix testing some 7 years ago with matrix decoder wired onto centre channel and rear surround to get half pan sounds appear on well kinder of new channel on the ceiling.
I tested the opening of Grand Canyon (1992) with helicopter in Dolby 4.1 as well as the down mix 4.2.4 matrix and the effect of it worked but it had some small cross talk snags but so what, least I bothered to explore it, for myself to see how well I can make it work.
I only had it wired up maybe for day or two then uninstalled it to fitting the surrounds all back to how it was with the other type diy overhead surrounds. Plus I didn't have enough amplifiers at the time.
I could do that again I have enough spare Dolby PL and 4 extra spare amplifiers out the 30 or so I have now.
I think I'll play the film as it comes tomorrow its exhausting work start finding rack space and my main x2 racks are FULL UP! x73 speakers is more than most have in their home cinema.