Hope nobody mines this topic,i would like to know proper crossover on my speakers.My mains frg. resp. 40-40hz,90 db(1w,1m),crossover (24db oct)700/3000hz.Center 89db,43-40hz,crossover(24db oct)600/3000hz.Surrounds 50-35hz,88db,crossover(24db oct)3000hz.Obviously i cant read this properly to know enough to properly set this.I presently have mains at 60,center 80,and surrounds to 80.My sub is a martin logan grotto also set to 80 in the rec.Dont know if maybe i should set the mains to 40 instead of 60.Would really appreciate any advice.All speakers are set to small.thanks