Frequency range from 55 Hz to 20 kHz., Amazing performance delivered at an unbelievable price is what the brand new Performer Series is all about! Get high sound pressure levels with absolute claritythis powerful, superbly efficient monitor system has a powerful 15 in. long-excursion bass driver at its heart, coupled to a proprietary Behringer 1 in. HF driver with a professional wide dispersion horn.