Building a 5-way active system is no easy task!
You have to take extra care about phase coherency and the effect of one crossover point on the others:
http://www.linkwitzlab.com/frontiers_5.htm#V
So for example in your case I suppose you are using different channels of your 4x10 for the sub, woofer and mid+cd+tweet.
So that means that if you are using 24dB/oct filters for the sub/woofer crossover then you should add a 80Hz 2nd order allpass filter to the mid+cd+tweet section.
If you go fully active you will have to add allpasses on all channels but, reflecting crossovers from the lower channels.