Looking for basshorns

I've got a high frequency horn that goes from 400 hz. on up and would be interested in finding a reasonably priced (and sized) basshorn that can take over from 50 hz. or lower and reach up to about 450 Hz. Does anyone know of such a product?
How's 80Hz to 500-600Hz? Edgarhorn Titan IIs. I built the one's shown in my system from flat pack kits. Figure about a 3' x 4' footprint. This is just another suggestion. I'm sure John has some very good ideas. :-)
Klipschorn, about 39hz to 400 HZ. The factory cutoff frequency is 400 HZ. Where are you located? Feel free to drop me an email as I have a spare pair of Klipschorn bass bins.
Thanks for your responses so far.

Marty, The girl thing is cute and may actually live up to the lofty claims but I can't afford and couldn't house it anyway.

I have spoken with Johnk in the past and may again in the future. I don't build cabinets and really couldn't benefit from DIY.

Tiger, I already have better bass cabinets than Klipsch can provide and I don't have corners anyway. Thanks for the offer but that is not where I want to go.

Dan-ed, Do you have any idea what is going on with Bruce Edgar? His website hasn't been functional for a long time.
The Edgarhorn website has never really worked. ;-)Bruce is pretty much retired, but I suggest sending him an email through AA. However, if you can't do the DIY route I don't know if this is the way to go or not.