This movie NEEDS a good subwoofer !!!
It is really pathetic seeing all the hundreds (!!) of extremely bad reviews this movie gets.
Actually reading several dozens of them I'm 100% sure none of these posters actually watched the film as intended: with a properly setup, good quality Home Theater system.
This movie without bass and surround effects is indeed a waste of time. With a proper setup there is MUCH to enjoy! The visceral bass enhanced sound effects will have you (and your neighbours) running for cover and teach you fear no 60's movie ever could induce... ;-)
Owning 1000+ movies on all the various formats this still remains one of my top favorite bass heavy movies.