About this them
 
Package Dimensions: 21LX18HX18W(inches)
Packaging weight: 1 pounds 
 2-way bass-reflex Bi-amplified nearfield studio monitor with 5" cone woofer and 1" dome tweeter.
 54 Hz-30 kHz Frequency response
45 W LF plus  25 W HF bi-amp system for high-performance 70 W power  amplification
Room Control and High TRIM response controls
XLR and TRS phone jack inputs accept balanced or unbalanced signals