rayj wrote:You like Whitehouse, right? Get a sitter, or explain to your young'un ahead of time...crank it up.
Are you zoned residential, or mixed? In Seattle, 85 db is the legal limit from 10PM to 7AM in residential zones. In mixed zones, all bets are off. We tried to file a noise complaint when a new nightclub flew it's entire sound system from the bottom of our apartment's floor, and the cops tend to pretty much ignore it. You can start a class action suit, though...but I digress.
Bad neighbors are always bad news. Infrasound is fun, but it will fuck with you, too, and it's expensive/difficult to set up. You know what will work? Get some horns that go up to 24KHZ or so (cheap ones are out there), and use a tone generator (30 bucks or so, used) and cheap amp...low watts will do. Aim them at 'em...ultrahigh frequencies are really unpleasant. Ever play with one of those electronic dog 'whistles'? Ouch. If you go military with one of these setups, you can crack teeth.
Pump it through the vents. High frequencies are much more directional than low ones. Or hang them outside aimed at the porch...etc.
"Honey, I've got a beastly headache."
That's 2 votes for infrasound, James.
You know what you must do..........