I don't think it would be a huge deal, though which driver is blocked will make more or less of a difference. I'd much rather block a woofer than a tweeter...as a matter of fact, I probably wouldn't hesitate for a moment to block woofer, and wouldn't do it at all if it's right in line with a tweeter. For the midranges, I'd probably try to get it between drivers.

I think it would be easy to build a low platform to raise the speakers 1" ~ 7" just to make sure a critical driver isn't blocked....

::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::