"Completely cleaned up the mids and highs and improved power handling."YOu describe exactly what I have heard many a time, esp with the smaller full ranges. At the GPAF this year I demoed exaclty that with the 4" DCA drivers in a PAWO horn: a classic case of a driver being able to do 45HZ in a BLH, but producing COPIOUS IM. Crossing it at 70HZ cleaned it up very significantly.