70 Volt and 8 Ohm combination model. Two 3 inch woofers, a 1 inch tweeter and two bass ports deliver dynamic 360 degree sound with full 180 degree dispersion. 8 Ohm is 40 W maximum power and 70 V has 2.5W-15W transformer taps. Easy installation even in high ceilings and can be installed either fixed or free hanging. Sat723 speakers come in black only.