I run my 3 ways and my sub thru a DSP I recently bought.
I always had a 2 way or 3 way set in the front but I always ran them thru passive crossovers.
I love the difference in sound quality running them actively!
I'm playing around with the frequencies but right now I'm starting off with my tweets high passed at 4Khz and up, my mids low pass at 4khz and high pass 400hz. My mid bass woofers low pass at 400hz and high pass at 70hz.
Sub Low pass at 70hz and high pass set at 25hz.
All slopes set at 24db per octave with Butterworth filter, for right now.
What do you guys have your system's speakers crossed at?