A range of chassis speakers to replace the main driver in the QTX Sound QS series speakers.Impedance[tab]8 OhmsPower max.[tab]500W[br]Power rms[tab]250W[br]Magnet size[tab]156 x 20mm[br]Diameter[tab]30cm (12")[br]Frequency response[tab]45Hz - 6kHz[br]Magnet weight[tab]1.4kg (50oz)[br]SPL @ 1W/1m[tab]98dB[br]Voice coil[tab]52mm (2")[br]Dimensions[tab]129mm x 307mmØ[br]Weight[tab]4.02kg