That's actually a bit far for 50". Head needs to be 6'-7' for PoV near iMax width.
I would also recommend headphones. You likely have good cans already.
You'll always be conscious of neighbours with a large sub based system.
This might help
When we think of surround sound we typically picture a home theater/entertainment set-up with a variety of speakers in idyllic placement but in recent years there are a number of headsets creeping on to the market than...
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