BEHRINGER EUROLIVE PERFORMER E1520 The Performer Series is designed to provide high sound pressure levels with absolute clarity: this powerful, superbly efficient monitor system has a powerful 400W 15" long-excursion bass driver at its heart, coupled to a proprietary Behringer 1" HF driver with a professional wide dispersion horn. Effective HF driver protection is integrated. The result is an ultra-wide frequency range from 55Hz to 20kHz. Positioning options are extensive: arrange your E1520s in a cluster or in stacks, mount them on a stand with a 35mm pole socket, or use as floor monitor wedges. Rugged construction for years of on-road use.