I had you come over here instead of just posting my x-over so you'd meet Wayne. My level of knowledge is best reflected in the referenced post.
But for what it's worth the attenuation circuit I put on the "+" side of the horn is 32 ohm R and .33uF C, with 16 ohms shunt across the "+", "-", ahead of L1. Don't know the sensitivity of the K33 so you'll have to play with the resistance. Live, Nude Resistors
Creating is more like performing than listening