I was reading about dipoles in a sound & vision artical ....

this is quoted from that artical;

Dipoles have NEVER been the right speakers for surround sound systems with 5.1 or 7.1 discrete channels except for ONE case...

If your room is on the smaller side and you can't place the side or rear surround speakers more than 5 feet from the main seat(s), you don't necessarily want "normal" speakers. When you are that close (5 feet or less) to the side or rear speakers, you want to use speakers that don't project directly at the listening position, so dipoles would be good to use in that case. For every other case, you WANT directional speakers in the side and rear (and height for newer surround modes). Reason being, discrete surround can and will place specific sounds in specific locations. For example, there might be a scene where a sound like dropped keys happens in the right rear. The "image" of those keys dropping will be specific with directional speakers. With dipoles in medium to large rooms, you'll get a huge, out of proportion and not well-localized "image" of the sound of the keys dropping.

Dipoles for surround sound were the right thing to use way way way back in the days of Dolby Surround were there were no discrete sounds in surround channels, you only would get ambience in the surround channels (wind, crickets, etc.). In those days there was never any "imaging" of sounds in the surround channels. Dipoles helped spread out that ambient sound. Dolby Surround (and other surround options from that time period) extracted surround sound from stereo mixes. When 5.1 and 7.1 came into existence with Dolby Digital 5.1 and DTS 5.1, each channel could be encoded uniquely with very specific information from ambience to very localized sound. Dipoles will eliminate the ability of the system to localize sounds in medium to large rooms, but in small rooms, dipoles avoid the problems you have if the speakers are too close to the listener(s).

And... there is a convention for describing the channels in home theaters with height speakers... they are listed like this "ground level" channels.subwoofers.height channels. I have 7.2.5 using that naming convention. So 7.2 isn't a Dolby Atmos configuration and won't benefit from using Dolby Atmos. You have to at least have 7.1.2 for Dolby Atmos, though Pro Logic IIz and DTS Neo:X will do 7.1.2 also so, again, 7.1.2 isn't "much" of a system for Atmos... you really want at least 7.1.4 to get into Atmos. This may be referred to as 11.1 in home theater AVR-speak.


Read more at http://www.soundandvision.com/content/direct-or-dipolar-speakers-dolby-atmos#dzxdqpADV2BEJRp2.99

7.1.4 * MRX1120 * M100s * 180HP * 4x M3-on walls * 4x M3-IC * dual XV15se * Shakers