Dimensions (W x H x D). 6.5” x 10.5” x 7.75” / 16.5 cm x 26.7 cm x 19.7 cm Net Weight (each speaker). 13.0 lbs / 6.0 kg. MANUFACTURER'S DESCRIPTION The M1 Active 520 is the third generation of the acclaimed Alesis M1 Active Series. The M1 Active 520 offers incredible bass and midrange definition and flat frequency response from its high-precision driver and professionally crafted crossover. With a bold new look, redesigned driver, bass density control and EQ, this affordable, high-precision active reference monitor delivers superb sonic clarity. FEATURES 5 low frequency woofer for clear bass and midrange 3/4 silk dome tweeter for smooth, detailed highs without harshness Bi-amplified design / tweeter – 25W, woofer – 50W for ultra accurate frequency separation High-precision drivers offer lower distortion and smoother frequency response Acoustical waveguide for superior imaging with minimal diffraction 1 thick front baffle virtually eliminates speaker resonance Magnetically shielded for close placement to video monitors in computer-based music production studios XLR and 1/4 TRS input connectors with volume control Low frequency density switch for acoustic space adjustment of the monitors Rear port design provides deep bass extension and increased SPL Hi, mid and low frequency EQ switches to accommodate user preference and sub-woofers Top mounted, integrated power switch/clip light bar