The Quatro is side-firing and would make a mess of the low end if it were not tuned. I'm not particularly impressed with the bass of speakers which side-fire their low end drivers. A significant amount of nuance in the lower frequencies is lost.
For those who say it doesn't matter which direction the woofer points, I'm not buying it. I have used side, down, rear and forward firing woofers in speakers and all alternative directions to front firing are not as pleasing to my ear. The bass simply sounds flabbier, less distinct and uncecessarily involves the room more. So, yes, it's a good idea for Vandersteen to work to control the drivers blasting the bass toward a side wall.
For those who say it doesn't matter which direction the woofer points, I'm not buying it. I have used side, down, rear and forward firing woofers in speakers and all alternative directions to front firing are not as pleasing to my ear. The bass simply sounds flabbier, less distinct and uncecessarily involves the room more. So, yes, it's a good idea for Vandersteen to work to control the drivers blasting the bass toward a side wall.