So I'm new to amps and subs and recently bought a Alpine subwoofer one with two sub speakers in it. I also got two 6x9 speakers and a kenwood Amplifier All second hand from a friend. I've now wired everything up and powers good my Problem is I'm not sure which RCA ports to use on the Back of my stereo. I have a Sony stereo and it has four Ports a white and red one aswell as two black ones. With my amp hooked into the black ports there's mega bass and only bass. I have the two 6x9s and subs Connected to the amplifier and I want music from the speakers with booming bass from the subs. I've now plugged the RCA cables into the white and red ports at the back of my stereo and the music is loud and clear from speakers and subs but there's only a small amount of base. Do I need to buy RCA splitters and have them in all four ports or do I have to tune it to bring the bass up