Well I've had the Beam with Sub and it sounds fantastic. But the front soundstage does sound narrower than from the Arc.They reckon the beam sounds even better with the sub! Can anyone compare?
It's a tough one because that depth is hard to give up that you get from the sub, and it does free the Beam up nicely, you can hear the difference from the Beam.
But the Arc does just sound bigger and Meaner and you do just watch films and the sound just comes at you from all around. Where the Beam you do feel like it is coming from that one spot Infront of you.
Even with the rears added the front soundstage from the Beam more often than not sounds like it's coming from a narrow space in front of you. The Arc it sounds a lot wider and more like you're listening to separate speakers either side of your tv if that makes sense.