The C280-IDC features an 8-inch C-CAM bass driver and a pivoting IDC module housing a 4-inch C-CAM RST inverted midrange driver and a 1-inch C-CAM Gold Dome tweeter. True 3-way design provides rich midrange detail higher system output greater power handling and superior vocal intelligibility and sound localisation. Optimum imaging and set-up are established via the pivoting IDC high frequency (+3 dB /0 dB / -3 dB) level adjustment and boundary compensation (on / off) controls.