Sounds like a phase issue to me, but Kevin is sure that all + and - are correct. But then, you had an issue Lee, and Kevin still was blown away by the bass from your K's, so. I have no idea what it could be. Kevin definitely had bass from his subwoofer. The cabinets were constructed correctly from the Seattle builders I assume. Did you audition the crossovers after you built them? I'd love to help figure this out...