Acoustic research HC6  speakers.

Frequency Response: 80Hz-20kHz +/- 3dB

Sensitivity: 90 dB

Recommended Power: 25-100 watts

Drivers: The center channel speaker has two 4" poly cone midranges and a 1" silk dome tweeter.

Mounting: The center channel speaker can be placed above or below your television.  There are no included stands or rubber feet.

Input binding posts that will accept bare wire,

Dimensions W=13", H=6", D=6.75"

Tested working very nice sound