I'm doing a sound system for\with a friend of mine (I've done many, many before)....
In the past I've done either simple L\C or LC crossovers, but I've been looking around for something I can build by Sunday with what I have available (Everything but inductors, and very minimal op amps that aren't really meant for audio), but also something that is A-grade work. So I pondered an RC crossover, but evidently you can't do a second order\two stage setup effectively with those.
For a single stage RC high pass crossover at 120Hz, my R value was going to be 13.2KOhms, and C value was 1uF.
But then I found these and I'm highly interested:
The problem is either there are no formulas available, or I'm just having trouble with the math (it's not an excuse to be lazy, I actually have trouble with some math at times due to a brain ailment)
So I was wondering if I could just get a little assistance. The crossover frequency is ~120Hz. I'd like a second order filter for a faster rolloff...