No more bass boost? Audio menu changed

The first thing is to place your satellite speakers where they produce the best stereo imaging.  As for the sub’s  placement, I would follow Roku’s placement guide for achieving better low frequency, by placing the sub near a room corner or close to the wall, and use your bass tone control to increase or decrease its intensity until the sound suits your taste.  If bass richness still isn’t full enough, try setting bass control between 1 to 5, so as not to muddy the bass, and your treble control between 2 to 3 to achieve spaciousness.  Once set, use the volume control to project the sound.  If the sound still isn’t right, like the rest of us, you will have to wait until Roku decides to restores its sound dashboard back to its original operating specification, which is why we are all here salivating for.