InWall 865 Type Installation speaker Engineering Principle 2-way free air system Nom. /Music power handling 60 / 120 watts SPL (1 watt/1m) 87.5 db (1 W, 1 m) Frequency response 45...40.000 Hz Crossover frequency 2.900 Hz Woofer 165 mm (6''), aluminum Tweeter 25 mm (1''), aluminum Nominal Impedance 8 ohms Dimensions (WxHxD) 23.6 x 33 x 8.5 cm(9.3'' x 13'' x 3.3'') Installation opening 19.5 x 29 cm (7.7'' x 11.4'') Installation depth 8.5 cm (3.3'') Weight 2 kg Available accessories ER 6WFB 650 Special Features Adjustable tweeter level Adjustable tweeter Gold-plated clamp contacts