Not too many companies making horn specific drivers...I have used the LAB 12 drivers in the lab-horn but the HL-10's are a newer driver and I have never heard them. They are odviously a nice choice for any horn. I am curious to know if any of you have any "hands on" with these drivers. For the rest of you check...
http://editweb.iglou.com/eminence/eminence/pages/products02/lab12/hl10a.htm