Lee
Adventurer
I believe they do add more temporary speakers. There is no way you could get the amount of bass from the horn PA speakers. It does sound decent.
Yeah, last year they set up some speakers.
But, I was just going by the blurb at Screamscape:
"No special light or sound system was added to the attraction, instead it seems that they just pumped a musical soundtrack over the existing PA system installed inside the hollow mountain which was not designed for that kind of use."
Could be wrong. I haven't spoken to anyone over there....