Final Measurements and comments
I have finished measuring my RS150 + MDT20 two way and posted results on the PE board here:
http://www.pesupport.com/cgi-bin/config.pl?read=224210
Not the smoothest curves but considering the tweeter costs less than $30 its not bad and sounds nice. You may notice that the tweeter phase is not aligned. I did this on purpose because these are mounted on the wall and the woofer is at ear level. This offset brings the phase back into alignment at my seating position. A non-fatiguing speaker and well worth the $200 I put into it. Regards, Paul.