My system sounds better without the center chanel. With "none" selected for center speaker in my processor it creates a phantom center chanel. The soundstage is seamless and you would swear dialogue is coming from the center speaker which is still sitting on top of my tv. Your Audio Physics should image better than my Proacs so give it a try!
Is the center the center ??
I have seen interesting discussions about center speaker quality and matching to the main speakers. That would speak for a set of speakers from the same manufacturer. Unfortunately the manufacturer of my Audio Physics main speakers does not offer a center speaker, so I have to find one from another source (The ProAc Response CC One I use currently is not bad, but I have heard better ones.). If the price is not the main factor is the Nautilus HTM1, the Aerial CC3, the Legacy Audio Silverscreen (model II, approx 1.5 k$ ??) of the Martin Logan Theatre THE center speaker for my system? Are there reviews of center speakers available (Stereophile apparently does not review them.).