Guido, you haven't been listening to Sumiko. There's no "ideal distance" from the back and side walls. You need to have Rod from Soundings over to position them optimally in your space. All your issues will magically disappear.
You might go ahead and burn-in your speaker cables. I'm not one to get carried away, finding that Kimber has some reasonably priced offerings that will work with your speakers. Thank goodness that VA takes responsibility for the crossover and there's none of that bi-wiring mumbo jumbo to concern yourself with.
BTW, what amp are you using?
Dave
You might go ahead and burn-in your speaker cables. I'm not one to get carried away, finding that Kimber has some reasonably priced offerings that will work with your speakers. Thank goodness that VA takes responsibility for the crossover and there's none of that bi-wiring mumbo jumbo to concern yourself with.
BTW, what amp are you using?
Dave