The M1Active 520 and 620 are the third generation of the acclaimed Alesis M1 Active Series. Both 520 and 620 models offer incredible bass and midrange definition and flat frequency response from their high-precision drivers and professionally–crafted crossovers.

With a bold new look, redesigned drivers, bass density control and EQ, these affordable, high-precision active reference monitors deliver superb sonic clarity.
_5" (520) and 6.5" (620) low frequency woofer for clear bass and midrange
_1" silk dome tweeter for smooth, detailed highs without harshness
_Bi-amplified design / tweeter – 25W (520) and 30W (620), woofer – 50W (520) and 65W (620)
_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