how to make a pep-boys police siren louder??

[nikon]

well you've prolly all seen em at pep-boys, it dos sirens, animal noises and PA system....but I want it louder :D what do I need..I know a bigger loud speaker...but what do I have to do to make it get mroe power....is there something I can put in-line to the speaker that increases DB level??

[MrCoffee]

lol, you can hook it up to an amp [img]smile.gif[/img]

[nikon]

hmm....lol, ya but I dont need 200watts ;) how much do you think it will take?? 20 watts or something?? that I can get at pep-poys for like 30$