Originally Posted by chroman
I have been following this thread for some time now, really informative and impressive rigs.
I'm considering expanding my Dolby Atmos 7.2.4 speaker layout to 11.2.8.
I'm planning to use two AVRs:
Denon X6300H, it supports 11.2 channels, this receiver can do 7.2.4 without adding another amp.
Denon X6200W would add wide speakers support, 4 heights (FHR, HFL, THR, THL) and side surrounds.
The problem you run into is that these two receivers don't know about each other. When decoding the height layer of the soundstage, one AVR sends all of the height information to the Top Front and Top Rear speakers, while the other AVR sends the same info to the Front Height and Rear Height speakers, leading to duplication of sounds and potentially some imaging or object movement issues. You will never have an instance where, say, a helicopter pans from Front Height to Top Front to Top Rear to Rear Height, which would be the ideal goal. Instead, FH and TF are basically identically to each other, as are TR and RH.
If that's what you want to do, it would be simpler to just use one AVR and create arrays by wiring the Top Front and Front Height speakers to each other in series, then the same for the Top Rear and Rear Height.
Likewise on the ground level, the X6200 would create Wide channels for you, but (if it's configured for 7.1.4) the X6300 believes you only have 7 speakers there and will take all the audio intended for Wides and split it between the front mains and Surrounds. More duplication.
get accurate Wide channels by configuring the X6300 for 9.1.2 and simply not connecting any height speakers to it. That receiver would consolidate the entire height layer into 2 channels which are not actually connected to speakers. Then configure the X6200 for 7.1.4 and only
connect height speakers to it. This gives you a total of 9.1.4, with all sounds going to an accurate placement. However, it will not give you the 8 height channels you want, just 4.
Here's the layout (Layout in this images is 9.2.8 but I'm planning to add two speakers between Side and Rear speakers):
How are you planning to decode audio to get to those speakers? Are they just cloned from either the Surrounds or Surround Backs, or will you be adding two additional AVRs to matrix new channels between the Surrounds and Surround Backs?