I have experienced speakers that sound better bi-wired and speakers that sound better single-wired. I would go with the designer's preference and agree with Sagger re simplifying the connections. By the way it is really quite difficult to compare single-wire with bi-wire without changing how the speaker cable acts as an interface and so what you hear may not be the separation of the bass return (ie. star earthing) but the change in the effective speaker cable being used.
One more BI-WIRE question
I've read as many of the expert opinions on the bi-wire subject as possible and have done my own research and listening test with different speakers I've owned.The electrical theory as to the advantages make sense to me.The question I pose is this:I just bought a pair of monitors from a well known Italian maker that are equiped for bi-wiring.The dealer and US distributor both claim that these speakers would not sound better bi-wired and indeed were not designed to.The only reason for the bi-wire provision was to satisfy the demand of the European market.Does anyone know if one type of crossover design is considered optimum for bi-wiring.Other than marketing I'm trying to figure the makers logic here.....Thanks