As a side note, some of you may find it interesting to know that there is one bass cabinet manufacturer that makes transmission line cabs (almost exclusively) - Euphonic Audio. I have a number of their bass cabs, and not only are they deep, tight, and very uncolored (for a bass cab, mind you), but they also sound great for PA use. Their older, VL-series cabs are their best, IMHO. If this is of any interest, check out www.euphonicaudio.com.
Their lead designer, John Dong, started out in the high end audio speaker manufacturing business.
Their lead designer, John Dong, started out in the high end audio speaker manufacturing business.