You need a subwoofer enabled to properly hear this.
I've been very interested to see how BLI's new Paragon3 system was going to perform. Bob Grubba does a presentation on the BLI website, but I wanted to see it somewhere else.
Here is JLWii2000 doing his little review. Skip to the 15:50 mark on the video for a quick comparison of an engine running both .... with BLI's subwoofer system, and without it.