Fits most Standard Horn Flares with a 1 Inch Throat. Works with most Passive and Active Crossovers. Field Replaceable DiaphragmPower RMS: 250W Frequency Response: 800 – 20000Hz Impedance: 8 Dimensions: 80 x 50mm Weight: 1.42Kg. High quality Fero Fluid Cooled bolt-on 250W compression driver. The product features a titanium high temperature voice coil- gold plated quick fit push terminals and is ideal as a replacement horn driver.. horn compression driver-compression driver