Mackie CR5BT 5″ Multimedia Monitors with Bluetooth are designed for multimedia, with Bluetooth streaming that delivers ultimate flexibility for media creators and music lovers. Featuring 50 watts of power and premium transducers, CR5BT delivers rich sound with deep bass response perfect for producers and musicians. Choose which side of your desk gets the volume knob with CR’s speaker placement switch and take advantage of convenient front-panel features like a dedicated headphone output with level control. With Mackie Creative Reference monitors, you get professional sound quality and features in smart designs perfect for work, play and everything in between. Troubleshoot- if the sound is loud and distorted Reduce the signal level at the source. Too much bass or not enough bass recommend to Move around the room and see if the bass response changes. Its possible your listening position coincides with a room mode where the low frequencies either become exaggerated or nulled. If so, try moving the monitors to a different position, or moving your listening position. Bluetooth protocol is 3.0