HF COMPRESSION DRIVER FOR QR12 / QR15 / QS12+A / QS15+A , HF COMPRESSION DRIVER FOR QR12 / QR15 / QS12+A / QS15+A , A 1" throat titanium diaphragm compression driver to replace the HF horn driver in the QTX Sound QR12 (178.212UK), QR15 (178.213UK), QS12 (178.562UK), QS12A (178.565UK), QS15 (178.568UK) and QS15A (178.569UK) cabinets. , , Power max. - 70W Power rms - 35W Frequency response - 800Hz - 20kHz Voice coil - 35mm Dimensions - 63mm x 100mmØ Weight - 1.07kg