Well, the main question was how far to keep the speakers away from the front wall. My response was merely that the more important distance was between the speakers and listener.
If one had 15 feet to spare from speakers to listener but was constrained to an 8-foot separation, I would advise to try that, then move the listening seat closer to get a wider spread. At some point, an optimized location will be found. Getting somewhat closer to the speakers will also increase distance from the rear wall which can only be a good thing.
If one had 15 feet to spare from speakers to listener but was constrained to an 8-foot separation, I would advise to try that, then move the listening seat closer to get a wider spread. At some point, an optimized location will be found. Getting somewhat closer to the speakers will also increase distance from the rear wall which can only be a good thing.