After spending some time searching I found an alternative mid/woofer, it is Beyma 10BR60, the spl is only 92dB, it is a compromise. the rest of the data looks very good, Rs=45hz, Qts=0.47, Vas=47l, etc, also it can crossed above 1.5khz, close to 2-3khz.

Wayne, I thought may like to know this.