The cowbell noise is trapped on lower level and it drowns out the sound.
It sounded pretty great in the upper level, cowbells drowned out the noise and bass but you could still hear it better than you could in the past.
So 30% of the stadium can hear the PA and sound? That's still a big problem. Again, the lower level needs an actual distributed sound system like every other SEC school has with speakers every 30 ft or so mounted along the tiers above the seating areas (use the club level on each side).
From the Shreveport newspaper:
"Not only did Mississippi State embarrass LSU on this night. Davis Wade Stadium wrecked Tiger Stadium in music choice, atmosphere and ? most of all ? volume.
When I'm 80 and deaf, it's not going to be all those Springsteen concerts or Queen at Municipal Auditorium in New Orleans on Halloween Night in 1978, it will be this game.
And this one will be ringing in O's ears for a long time."