300W compact bass speaker cabinet Compact speaker cabinet constructed by using high-end birch plywood, rugged covering, metal corners, and a steel grille. A custom-designed 15" BlueLine series speaker plus a switchable (Hi, Low or Off) horn tweeter to give complete control over the high end.ansparency, and deep low end you need without giving up the mid attack and high end you need for modern bass tones. Featuring tough construction and reliable components ABM cabinets will take whatever is thrown at them night after night. You can connect your amp head via two speakon or jack inputs. The dimensions of the cabinet are 500 x 610 x 420 mm and the weight is 25 kg.