There are many copies of the title subwoofer available for sale at quite attractive prices. From what has been written in various places, the subwoofer itself is part of the set and is sold separately. The problem is that there is no filter or any band adjustments, so it will probably rumble furiously. An active folding filter costs about PLN 40-50 and an additional housing. Is it worth being interested in this model and making the modifications presented?
