70Volt and 8Ohm combination model. Two 3 inch woofers, a 1inch tweeter and two bass ports deliver dynamic 360degree sound with full 180degree dispersion. 8ohm is 40W maximum power and 70V 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.