I have an SVP450 police siren unit that I recently purchased from another forum member but now that I have it I realize I'd rather put the money into something else for my jeep. I purchased the speaker from online and I'm trying to sell them together. It is a 100 watt compact speaker perfect for mounting behind the grill (that's where I planned to mount it on my TJ). It is stupid loud even for its small size. I hooked it up to my battery and tested it out and everything works as it should. There is a hole for a PA Mic but no hook up for it internally. I suppose SVP used the same face plate for different model sirens. You can hook up your cb radios PA function to this via the wiring in the back and play it through the speaker but I do not know how to do that nor did I try. I'm looking to get $115 including shipping. Not looking to trade for anything unless you have a 10' LED light bar. Thanks for looking.