A friend just bought the Hawthorne Audio Silver Iris and Augie drivers, which appear to be a specially modified Eminence 15" coax modwoofer/tweeter (the Silver Iris) and a 15" Eminence woofer )the Augie), all intended for an open baffle configuration. I will be building a pair of baffles for him, coincidentally today. I have some doubts about how seamlessly a 15" woofer will cross over to a small coaxially mounted horn tweeter, but with speakers the proof is in the listening. After it's completed and had some breakin time I'll report on its sound in the high efficiency speaker forum.