So, you have one Meridian 557? Then, even with two sets of binding posts, the best you can do is bi-wire, not bi-amp, the speakers. You would have to add another 557 to do that.
In any case, choosing a speaker because it has bi-wiring or bi-amping capability is like choosing a car because it has air-conditioning. It may possibly enhance your enjoyment but it is not an essential contributor to the basic function and quality.
In any case, choosing a speaker because it has bi-wiring or bi-amping capability is like choosing a car because it has air-conditioning. It may possibly enhance your enjoyment but it is not an essential contributor to the basic function and quality.