The d&b C4-SUB is a high-performance, bass-reflex subwoofer designed to deliver powerful and precise low-frequency reproduction for live sound reinforcement. It is part of the renowned d&b C-Series and is commonly used alongside the C4 top cabinets for a full-range, high-output system.

The ARENA 8 is equipped with a 8" woofer and a 1" driver with a rotatable 90°x70° constant directivity horn. The unit can handle 200W/RMS power and provides sound pressure levels of up to 122dB. The ARENA 8 is recommended for speech and background music, as a very compact stage monitor or combined with the ARENA SW15 subwoofer as a small PA system.