





d&b audiotechnik B4-SUB – Compact Cardioid Subwoofer
The B4-SUB is a high-performance, actively driven cardioid subwoofer designed for precise low-frequency reproduction. Featuring a 15” front-firing bass-reflex driver and a 12” rear-firing bandpass driver, it delivers powerful, controlled bass while minimizing unwanted rear energy.
Built for ground-stacked setups, the B4-SUB reduces low-frequency reverberation, ensuring clarity and accuracy in any environment. Its durable marine plywood cabinet features an impact-resistant, weatherproof finish, ergonomic handles, and an M20 threaded flange for secure mounting. Available in Special Color (SC) options to match any setup.
Shipping cost will be calculated by an Account Executive once order quantities and availabilities are confirmed. Orders shipping outside of continental United States are will call only.