A range of chassis speakers to replace the main driver in the QTX Sound QR series active cabinets.Impedance[tab]4 ohmsPower max.[tab]500W[br]Power rms[tab]250W[br]Magnet weight[tab]1.417kg (50oz)[br]Magnet size[tab]20 x 156mmØ[br]Diameter[tab]38cm (15")[br]Voice coil[tab]62mm (2.5")[br]Frequency response[tab]42Hz - 5kHz[br]SPL @ 1W/1m[tab]101dB[br]Dimensions[tab]151 x 385mmØ[br]Weight[tab]5.27kg