Amazon.com: MB Quart DS1-204 Discus Shallow Mount Subwoofer (Black) – 8 Inch Subwoofer, 400 Watt, Car Audio, 2 Inch Voice Coils, UV Rubber Surround, Best in Sealed Enclosures : Electronics
Different types of subwoofer boxes and their purpose (Bandpass, Ported – CT SOUNDS
For the people who were wondering. I finally switched both of my SQL 15's to sealed boxes from a ported one. Best decision ever lol. : r/CarAV