How to Wire a Car Subwoofer?
2 Answers
It is generally recommended to install it under the middle seat of the car. When the audio is turned on, the entire car will have excellent music effects. Take power from the positive terminal of the battery, add a fuse to this wire, route the wiring harness through a suitable position into the car, and install a switch inside the cabin. The car grounds itself through the body, so the ground wire can be attached to the screws that secure the seat. You can connect wires from the original car speakers, install an audio interface, and use a dedicated audio wiring harness to plug into the subwoofer jack. After the subwoofer is installed, you can manually adjust the volume using the buttons on it and choose the sound effect that suits you best.
When I installed the subwoofer in my car last time, I found the wiring was actually quite simple. The power cable needs to be connected to the positive terminal of the battery, and remember to add a fuse in the middle to prevent short circuits. For the ground wire, choose a metal screw location on the car body and use sandpaper to remove the paint for a secure contact. The most crucial part is connecting the REM wire to the head unit's control wire, so the subwoofer only gets power when the car starts. If the head unit doesn't have a subwoofer output port, you'll need to buy a high-to-low converter and plug it into the front and rear speaker wires. Never bundle the power cable with other wires, as it will cause buzzing. I recommend using 16-gauge wire—I used this type, and a three-meter cable cost me just fifty yuan. Finally, when tuning, remember to test the phase. You can use a mobile app to play test tones and check if the bass direction is correct.
