Here's a link to maybe what you are talking about. These are 6.5" drivers in a corner box with the port in the back. I hooked them up
as the mains once and they needed the bass boost switch to fill the room. I have the TQWP's made with 8" fostex drivers that I like well enough.http://cerchaos.homeip.net:1280/woodworking6.html
Chris