Alesis M1 Active Mk2 Bi-Amplified Reference Monitor (Pair) Custom Drivers Designed For Active Monitoring Active Bi-Amplifiers and Electronic Crossovers Attractive Cabinet Design with Dual Ports and Offset Tweeter Wide sweet spot, excellent imaging, and accurate monitoring for creating flawless mixes that translate to any playback environment 6.5 non-woven carbon fiber woofer cone for fast low frequency transient response 1 ferrofluid cooled silk dome tweeter Audiophile quality internal 75W (LF) and 25W (HF) amplifiers 2kHz crossover point for wide dispersion and low midrange distortion