Quote Originally Posted by Altec Best View Post
But anyway I need to design a new sled and am wondering if i should keep the front of the horn low or raise it up a little bit.
Well, the main reason for putting the drivers as high up as practical in the cab is to keep their acoustic centers as close as practical to the HF driver, so jacking it up pretty much negates the effort, a bummer since ideally the woofers should have been down about 1/3 down from the top for the theoretically smoothest response, though in reality all it amounts to is the ability to use a bit less internal damping, a big deal with small 'FR' drivers, but not so much with big (mid) bass woofers.

You will need some fairly dense damping between the horn, cab though for best overall performance and personally, prefer a full perimeter foam horn extension since they are hard into the corners. Really, packing the whole corner around the horns is best to attenuate all its cavity resonances.

GM