Used d & b Audiotechnik B4-SUB

The d&b Audiotechnik B4-SUB is a professional subwoofer cabinet designed to deliver robust bass response in demanding audio environments. It is suited to concerts, festivals, theatres and fixed installations where reliable low-frequency reinforcement is required. Used examples are available individually, making it practical to scale a system to match a venue's size and layout.

The B4-SUB is made by d&b audiotechnik, a German professional audio manufacturer founded in 1981 and based in Backnang, Germany. The company produces loudspeaker systems, subwoofers, amplifiers and system control software for rental, touring and installation markets, with products manufactured in Germany. The B4-SUB sits within the subwoofer part of that range and is designed to integrate with other d&b loudspeaker and amplifier systems.

The B4-SUB is regularly deployed as part of larger d&b Audiotechnik systems. One typical configuration pairs multiple B4-SUB cabinets with T10 full-range speakers and D12 amplifiers, covering both low-frequency extension and mid-to-high frequency reproduction. This kind of multi-component setup is common in concert, theatre and event reinforcement contexts.

Check the cabinet's physical condition, including the enclosure, grille and driver, and confirm it has been serviced or repainted to manufacturer standards if refurbishment is claimed. Used price is influenced by cosmetic condition, whether the unit has been serviced, and what accessories are included. Each listing on this page shows condition details, and purchases carry a 21-day warranty covering major functional faults. The full buying guide at 10kused.com/used-av-equipment-guide/ covers further steps.