Sorry for the stupid question. The band recently acquired subs. This is the first time in 30 years i am responsible for sound. I have a crossover as well. I plan on sending a signal from my mixer to the crossover, to the power amp and then to the subs. What frequency threshhold should I set the crossover to maximize the signal to the subs? It may be a lame question, but I'd could really use some help. Thanks.