I'm not sure what happened the first time but here it is again.
I didn't like anything pre fab on the market so I made my own. Some 6" pvc, a 240W amp, a pair of jvc marine speakers and a boss Bluetooth controller. All together about $200 after all the wire and everything. About $80 of that is the pvc. But it's VERY loud. I even had a guy comment he could here it over his in his rzr behind me. And he has a couple 6x9 mounted under the roof and a sub under the dash. It didn't seem that loud to me at the time but a was on like beer 5 and a good song came on, so I was jamming out!