Subwoofers require a lot of power, so they have to be wired to both a power source, like a cars battery, and an amplifier. After connecting them to the stereo speakers, run a separate wire to a ground source, such as an exposed metal bolt, for safety.

What do you need for a sound system in a car?

The Three Basic Components That Create Music in Your VehicleThe Head Unit. A high-end home audio system uses separate electronic components — a radio tuner, CD player, preamp, amplifier — connected by various cables. The Amplifier. The Speakers. Weve Come a Long Way.25 Aug 2011

What do I need to know when buying a subwoofer?

You should consider the power, sensitivity rating, and enclosure type. If you would like the system to play loud, low music, and you also have enough space, then choose the biggest subwoofer possible. Do not underestimate the small subwoofer.

Should Bass be higher than treble?

Yes, treble should be higher than bass in an audio track. This will result in a balance in the audio track, and will additionally eliminate problems such as low-end rumble, mid-frequency muddiness, and vocal projection.