The Concept 500 adopts advanced, innovative technologies to deliver pure audio excellence and a sensational sound stage. Q Acoustics floorstanding speakers couple low directivity with wide bandwidth, good sensitivity and sensible impedance, which makes them room-friendly and allows amplifiers to deliver their best performance. The Concept 500 pairs point-to-point bracing to deal with low-frequency panel vibrations with Helmholtz Pressure Equalizers to balance out pressure irregularities. Another component that allows for less vibration and coloration is the cabinet construction. Three separate layers are filled with a non-setting gel, which damps the the cabinet walls and converts higher frequency vibrations into heat.