Can anyone verify the low end rollover point on the SR6500? Is it set to 40Hz? The problem I am having is possibly sending too much bass to the woofer. It sometimes bottoms out on low notes. I have an head unit with a built in eq which has a high pass filter on it. I have it either set to off or to 50Hz. how should I keep these settings to avoid bottoming out the woofer? I am running passive currently wired in-line. I previously had it bi-amped but not right now. Thx.