A 1" throat titanium diaphragm compression driver to replace the HF horn driver in the QTX Sound QR8 (178.210), QR8A (178.202), QR10A (178.203)QT6 (178.400), QT8 (178.403) cabinets.Power max.[tab]50W[br]Power rms[tab]25W[br]Frequency response[tab]1kHz - 20kHz[br]Voice coil[tab]25mm[br]Dimensions[tab]55mm x 80mmØ[br]Weight[tab]0.39kg