Wow, something looks seriously wrong. The photo showing the Selenium back of the baffle looks to be a bolt on unit, rather than a screw mounted. Is this the correct Selenium and waveguide? Edit: I have gone back through the past few pages of posts, and see that you ordered parts for the low SPL version of woofers. Is it wired correctly? The RTA FR shows something terribly wrong. The waveguide shouldn't have to go so far ahead of the baffle to make the EconoWave work. Maybe Zilch has some ideas as well.