Gotta be The Orb, either Bangor leisure centre or Point Depot (where I also witness the bess toppling someone, and was myself wearing jogging bottoms, which were FLAPPING in the gust from the bins).
But Hooky's bass sacred 7 shades of shite out of me at the apollo last year. I had NEVER suspected it sounded like that. Also, in terms of most damage to a building, any distortion you heard in there or hear on the webcast is NOT the speakers, they remained CRYSTAL clear, that WOOOO WWOOOO howling rumble is the fabric of the venue rattling.
Was totally unprepared for it.
Also heard the Chems soundchecking, from half a mile away ( the far end of the forecourt of the garage that's at the ass end of the Point Depot carpark in case you know it) that was impressive, the depth of bass was beautiful.
APPARENTLY, the Orb recorded the bassline to the track Valley, AT RAF Valley in Wales, with a fucking HUGE concert PA ( and a bassplayer with a perpetual psychotic grin and hard on I'd wager) at one end of the runway, and a mic at the other. Must say, the sound ofthat bassline backs the tale up.