crossover in receiver and sub question

[larietrope]

I have a crossover in my receiver set up. Do I set the crossover in the receiver at 80H and the sub at 80H ?

 

[Adam]

I have a crossover in my receiver set up. Do I set the crossover in the receiver at 80H and the sub at 80H ?

That's a reasonable thing to think, but you want to do it a bit differently. You want either the receiver or the subwoofer to handle the crossover, but you don't want both of them to do it. Typically, you'll want the receiver to handle it. So, set the receiver's crossover to 80Hz, and set the crossover on the sub itself to as high as possible or disable the crossover in the sub if possible.

 

[autodevin]

I agree, use only one element with your crossover, redundant moves may cause an unwanted change in frequency distribution.

 

[j_garcia]

If you set both the same, you will double the slope at which the sub is rolled off, effectively creating a gap between it and the mains. Do what Adam said: if it doesn't have a bypass mode, set it as high as it will go.