For sale Focal ibus 2.1 subwoofer in good condition, has some marks and dents. Was removed from someone old car. Still great working condition. Come with what you see in pictured, no more accessories included. The Focal Ibus 2.1 Under Seat Subwoofer is an 8-inch enclosed active subwoofer designed for stereo systems with 2x55W power output. This sleek black subwoofer, with an impedance of 4? , is perfect for enhancing your car audio experience by providing powerful bass sound. It includes an amplifier for boosted performance and can be easily placed under the seat in your vehicle to deliver impressive sound quality and depth. Ideal for audiophiles looking to upgrade their car stereo setup.