Crossover Frequency questions

[Rmb1080p]

Hello All, I have recently hooked up REW software and have been experimenting with it. I found that in my system the 80hz and 100hz Crossovers were causing some cancelation around the 60-110hz area. I switched the crossover to 60hz and it provides a much smoother transition while keeping the response in the 60-110hz area much flatter. I am liking the way it sounds it seems I have more mid bass and the subs are much harder to localize. I Googled to see if anyone had encountered a similar situation where the higher crossover caused less response the the mid bass region but all I encountered was a bunch of people talking about how you shouldnt use a 60hz crossover and it has me wondering, Do I have somthing set up wrong? I know it works the speaks a little more in the bass region but mine seem ok. I watched Lord of the Rings: Rotk last night at -5 below reference, the bass drivers of my speaks were moving a lot more but nothing crazy, I have had them moving more listening to Cd's in pure mode. So what is the Reason against a 60hz Crossover?

[Fors*]

Originally Posted by Rmb1080p

Hello All, I have recently hooked up REW software and have been experimenting with it. I found that in my system the 80hz and 100hz Crossovers were causing some cancelation around the 60-110hz area. I switched the crossover to 60hz and it provides a much smoother transition while keeping the response in the 60-110hz area much flatter. I am liking the way it sounds it seems I have more mid bass and the subs are much harder to localize. I Googled to see if anyone had encountered a similar situation where the higher crossover caused less response the the mid bass region but all I encountered was a bunch of people talking about how you shouldnt use a 60hz crossover and it has me wondering, Do I have somthing set up wrong? I know it works the speaks a little more in the bass region but mine seem ok. I watched Lord of the Rings: Rotk last night at -5 below reference, the bass drivers of my speaks were moving a lot more but nothing crazy, I have had them moving more listening to Cd's in pure mode. So what is the Reason against a 60hz Crossover?

I am going to assume you are talking about a low pass filter of 60Hz. In this case, you need to be careful of what is called an "audio hole." This would mean that the LFE signal above 60Hz would be eliminated (blocked), and if your high pass filter is set to 80Hz (which is the THX recommendation only), this would block the frequencies below 80Hz from your speakers, which would then redirect them to the sub. However, since your low pass filter/crossover is set at 60Hz, the frequencies between 60 Hz to 80 Hz would be "blocked", thus creating the audio hole.

[Almadacr]

Just by curiosity , what kind of mic are you using with the REW ?

[Rmb1080p]

Using the Rad shack meter... with corrected values and my sub's crossovers are disabled .. I am only using the receiver crossover.

[Fors*]

Originally Posted by Rmb1080p

Using the Rad shack meter... with corrected values and my sub's crossovers are disabled .. I am only using the receiver crossover.

This is what I was referring to, your low pass filter or as some refer to it as your LPF of LFE.....