It's not your BUTT that you should be trying to isolate, but your HEAD dude! That's where your EARS are!
I currently trying one of those inversion devices, where you hang by your heels, and the results are getting pretty good. Except that my EARS (remember....THE important thing!) were not properly lined up with the tweeters.....dang! About to get it right though by adjusting the FORWARD slope of the speaker. Bloods r-u-n-n-i-n-g to my head n-o-w..... but I'm hearing things/details in the music that I've n-e-v-e-r heard before!
I currently trying one of those inversion devices, where you hang by your heels, and the results are getting pretty good. Except that my EARS (remember....THE important thing!) were not properly lined up with the tweeters.....dang! About to get it right though by adjusting the FORWARD slope of the speaker. Bloods r-u-n-n-i-n-g to my head n-o-w..... but I'm hearing things/details in the music that I've n-e-v-e-r heard before!