FAQ What are the dimensions of the QW 118P speaker? The dimensions are 28.312" x 21" x 27.00" (71.9 cm x 53.3 cm x 68.6 cm).What is the nominal sensitivity of the speaker? The nominal sensitivity is 97 dB.What is the power requirement for the speaker? The power requirement is 1300 Watts, 120VAC, 60 Hz.