There are hundreds of threads on how this is not possible. Sonos does not make any solution in which any of their sound bars can be used as a ‘center’ speaker, nor do they provide any method of stripping out the front left and front right signals, 

Sorry Bruce, I tried to find the threads and couldnt, hence posted the question. Sorry I asked.

No worries, the ‘search’ function on this forum is often lacking, but the feature, while it has been frequently and often requested and discussed,  is just not possible at this point. Perhaps in the future.

There’s never any shame in asking a question, though.

Thanks buddy