Raul
Rel subs do not filter main speaker outputs.They are not like other subs and you cant think of them as such.When you set them at say 35 this not a typical crossover. The rel will rolloff below AND ABOVE this point.The proper setting depends upon the slope of the rolloff of both the speakers and the sub.For example: I dont recall exactly but I think the slope of rels rolloff(up) is 6db per octave which means a sub set at 20 will be -6db at @40hz (the octave is 20-40 at this frequency).This would integrate perfectly with speakers that were flat at 40 and -6db @20hz assuming the output is set properly.This is why rels are typically "crossed over"at such low frequencies. Obviously perfect integration is difficult to obtain but approaching it requires knowledge of the slopes of both speaker and sub frequency rolloffs(up). You could just "trust your ears" but this assumes you are used to flat response and not the more common midbase bump most are.
Jim
Rel subs do not filter main speaker outputs.They are not like other subs and you cant think of them as such.When you set them at say 35 this not a typical crossover. The rel will rolloff below AND ABOVE this point.The proper setting depends upon the slope of the rolloff of both the speakers and the sub.For example: I dont recall exactly but I think the slope of rels rolloff(up) is 6db per octave which means a sub set at 20 will be -6db at @40hz (the octave is 20-40 at this frequency).This would integrate perfectly with speakers that were flat at 40 and -6db @20hz assuming the output is set properly.This is why rels are typically "crossed over"at such low frequencies. Obviously perfect integration is difficult to obtain but approaching it requires knowledge of the slopes of both speaker and sub frequency rolloffs(up). You could just "trust your ears" but this assumes you are used to flat response and not the more common midbase bump most are.
Jim