Ok, I am looking for some expert advice on this one: I am designing a vented enclosure for a Stryke AV12 woofer. I am wanting to get this design as "right" as possible before I build. Right now, the design is a 2 cubic foot enclosure vented to the exterior via three 3" flared ports. I have some basic knowledge of how group delay affects the sound of a subwoofer, but I still wonder how much group delay is acceptable for a "musical" vented sub. I was looking on the SVS web site to see if they had anything to say, and their FAQ page clarified to me that they do indeed pay attention to group delay when they design their subs. I realize that vented enclosures in general have higher group delay than a sealed enclosure, but I am really wondering what sort of group delay numbers I should be shooting for when I model the beast in WinISD. Right now, I am getting between 45ms and 55ms for my Group Delay numbers, and I am wondering how this compares to some of the subs you call "musical".