No not extreme slope.
Roy let us hear the CW4 with different active crossover settings. Not everyone agreed what they liked the best. We then got to see the raw curves of different slopes. The highest slope was the 24dB.
To my liking, was the 12dB between the woofer and mid. Again not everyone agreed. The final product was a 12dB with an extra "pole" in there that made it closer to 18dB. Roy would play with that last component in the chain to get the phase right. Something I could never do with my novice skills.
jc