Yes, I too use the fiberoptic out to my external powered computer speakers, but it's an additional external remote to keep up with. So switching to the LazyBoy means forgetting the speaker remote usually.LOL. But not being a sound expert, do external powered speakers provide this center channel? I thought that was a stereo set-up. How do I achieve a center channel for the TV?
Do sound bars have center channels?
Any sound bar that can take digital output (in this case fiber) has the ability to use all 5.1 channels. Now, if they use them or not, that depends on how high end you go.
If you already have computer speakers, and you like the sound from them, you might be better off getting a high end universal remote (like a Logitech) so that you don't have to worry about remotes. I have the Ultimate, which includes Bluetooth, RF and IR, so it works with all my devices.
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You can even use your phone, and even echo to control the remote.
I do lose out on Fios' voice activated remotes, but using my harmony, I still have access to commands that they removed from their newer cable remotes (DVR button is a HUGE example).