Sogood51...The DCX2496 is obviously of the same family as the DEQ2496, and I would expect it to be a fine unit. I considered it, mostly because it can do three channels. However, it has many features that are not relevant to home audio, and it looks a bit complicated to set up. For a crossover, I believe in the good old L-R 24 dB design that is easily implemented in analog circuitry. I bought a 4-channel Ashley X/O, and am very happy with it. Marchand electronics also sells good basic crossovers, at reasonable cost. I have used their stuff.
The DEQ2496 is functionally different. It is a more capable equalizer. It gives you a 61 band real time display as well as the equalization functions, graphic and parametric. It also has an automatic equalization feature (using a mic that is purchased separately). This is neat.
It is only 2 channel.
Go to the www.behringer.com website, where you can download the owner's manual, and decide what to do.