What are your exact settings for volume and low pass filter on your SVS sub?

First, if you haven’t already, use the “crawl method” to find the best location(s) for the sub(s) in your room for best bass…
https://www.audioholics.com/home-theater-connection/crawling-for-bass-subwoofer-placement

Then use this to fine tune your sub’s individual controls…
https://lifehacker.com/how-to-properly-set-your-subwoofers-volume-without-sh-1506136549

Using these techniques should give you a high degree of confidence that your subs are dialed in well. Hope this helps, and best of luck.

I think you have the right idea but beware of using the published specs to determine how low your main speakers actually go.

Try to play a test track with defined frequency levels from Quboz or from wherever and hear how low your speakers will actually perform.

Then, set your sub crossover to enter perhaps a little lower than your main's will actually play.

ozzy

Thanks, all.

I crossover at 85 hz, THX recommended crossover.  I, however cannot argue with 40 or 50hz.