The FUSION SERIES 4.5 soundbar delivers high-end acoustic performance at any amplification power level utilizing Impedance Optimized Soundbar (“IOSB”) technology making it possible to achieve high sound pressure levels with low to moderate level amplifiers. A typical bar speaker has impedance “swings” between inductive and capacitive values that diminish an amplifier’s full output capacity. Our IOSB crossover technology minimizes these variations and allows the soundbar to play at high-intensity levels with low distortion and minimal power.