The original hi-fi mini monitor, and respected by all. Radius 90 continues to evolve, delivering a greater size-defying performance than ever before. Radius 90 incorporates a 4” (100 mm) C-CAM bass driver and 1” (25 mm) C-CAM tweeter for a tuneful, controlled and powerful sound in pairs or combined as front and rear speakers in an AV system along with the 200 or 225, and the 380 or 390 sub. Use the optional MASM speaker mount or any standard wall bracket for wall mounting via the 90’s single point fixing. Optional floor stands expand the installation possibilities still further.