This Pyle Audio Pro PDIW65 2-way in-wall speaker system delivers premium stereo sound to your home theatre or office without cluttering floor space. Each unit comes with a 16.51cm mid-bass speaker that features a 2.54cm high-temperature voice coil and positional 1.27cm polymer tweeter for a full, rich sound. These speakers produce up to 200W and a frequency response of 70Hz-20kHz.