Cheap, load speaker set up for neighbor annoyance

Weird request.

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I had a group rowdy 20 somethings move in behind me. They party till 3 or 4 AM two to three times a week. Applified music, rough housing, drunk singing to music. They insist on doing the party in the backyard, which is closest to were my 8 year old's bedroom is. The music is loud, but the drunkin ass clown behavior is just as loud. I tried talking. Doesn't work. I HAVE TRIED TALKING TO THEM!!!!

Here in Stockton, the police tell you tough luck. "do to budget cuts, we have no one to respond" I have called no less then a dozen times. Short of calling in shots fired, they wont respond. Moving is not an option.

I wanna rig up a tower speaker like set up. I care less about what it looks like, or sounds like. JUST LOUD. Cheaper, better. I'm gonna set it up to go off at 5am, every morning till this **** stops. Any ideas for cheap solutions? Any other ideas?? My other neighbors are on board. They are just as angry.