The Sub20 is very powerful subwoofer designed for medium sized or larger control rooms in which powerful and yet accurate extra deep bass monitoring is required. Housing two long throw 12-inch drivers, extends down to 22Hz. Due to this alignment, the forces applied to the cabinet oppose each other and consequently compensate themselves, so that the cabinet stays much quieter than with conventional arrays. Distortion is drastically reduced in this manner, resulting in improved signal clarity, especially at higher levels. There are two down firing bass reflex tubes that, because of their size and construction, successfully avoid ventilation noise. amplifier section has two units, each capable of delivering 200W continuous or 300W peak power to their corresponding drive units. Both power supply and amplifier section use PWM technology, meaning very high efficiency (>90%) and cool operation in even the most critical phases of operation.