Use as satellite, rear or surround speaker in any 5.1, 7.1, or 9.1 home theater configurations;(1) 1 high-resolution terylene tweeter for crystal clear high frequency response that perfectly reproduces the latest high-resolution Audio files;(1) 4 low distortion mica-reinforced polypropylene cones for clean, clear bass, better linearity, and increased dynamic mid-range;Exclusive Polk power port for greater, more impactful bass;Built-in threaded screw insert and keyhole slots for easy wall mounting