The Audiocontrol 6XS is the only new, somewhat affordable, 2 way plus sub active crossover that I can think of off the top of my head. If you were willing to go used and locate something like the Coustic XM6, those can be had fairly cheap. Sadly, most affordable active crossovers lack a bandpass section for the mid and one is either forced to go ultra high end like the BitOne/MS-8/3Sixty/etc. or just use High Pass/Low Pass built into the head unit.