Ok, so ill tell him, we cant really make it louder, because it could cause feedback, and if not that, then it will get more complicated having to use another car audio amp.
I have an amp rated 2400 watts peak, and it has been bench tested at 989watts RMS. Thats alot of power RMS. I turn the gain to about 50%, and wired it mono to one subwoofer, so the amp sees a 4ohm load, which ive tested to be 103dB on the front windshield.
Ok so i have another question then. I want to make a circuit and hook it to my car, so when the doors of the car close, there will be a voice that says "Welcome, put on your seatbelt please". But i have no idea where to go to even start this project. I think i would have to hook it to the circuit that turns on the dome light when the door opens, but im not sure. I could even put a button on the door panel so when the door shuts, it sets the circuit off, and it talks. Any ideas would be greatly appreciated.
You guys are very knowledgeable, thanks for all the help.