The M-Audio BX4 BT (BX4EU) is a pair of professional multimedia reference monitors featuring 4.5-inch Kevlar woofers and 1-inch silk-dome tweeters. Designed for home studios, music production, podcasting, streaming, gaming, and content creation, these speakers deliver accurate sound reproduction with Bluetooth wireless connectivity and multiple wired input options.

Key Features

4.5" Black Kevlar low-frequency drivers
1" natural silk-dome tweeters
120 Watts peak power output
Bluetooth wireless audio streaming
High-EQ and Low-EQ adjustment controls
Rear bass-reflex ports for enhanced low-frequency response
Left/Right speaker position switch
1/4" TRS, RCA, and 3.5mm inputs
Front-panel AUX input (3.5mm)
Front-panel headphone output with speaker mute function
MDF acoustic cabinet construction
Optimized waveguide for accurate stereo imaging

Technical Specifications

Specification	Details
Woofer	4.5" Kevlar Cone
Tweeter	1" Silk Dome
Power Output	120W Peak (2 × 25W RMS)
Frequency Response	69 Hz – 22 kHz
Bluetooth	Yes
Inputs	RCA, 1/4" TRS, 3.5mm AUX
Headphone Output	3.5mm
Cabinet	MDF Bass Reflex
Power Requirement	100–240V AC
Dimensions (each speaker)	156 × 175 × 225 mm
Weight	4.46 kg per speaker