SB Acoustics SB12CACS25-4 4" Ceramic Woofer

The SB12CACS25-4 4" Ceramic Woofer from SB Acoustics represents a masterful blend of precision engineering and high-fidelity audio performance, designed to deliver exceptional mid-bass reproduction in compact loudspeaker systems. This driver is ideally suited for discerning audiophiles and custom installers seeking to build two-way or three-way speaker designs where accurate bass and clear midrange are paramount. Its controlled low-frequency response makes it an excellent choice for near-field monitors, high-end bookshelf speakers, or as a dedicated mid-bass unit in multi-driver arrays.

At the heart of this woofer lies a rigid ceramic cone, which provides outstanding stiffness-to-weight ratio, effectively reducing cone breakup and ensuring clean, distortion-free sound across its operating range. The motor system is optimised for low distortion, featuring a 25.4mm voice coil and a total Q factor (Qts) of 0.31, which enables tight, well-damped bass performance even in small enclosures. With a resonance frequency of 51 Hz, a maximum linear excursion (Xmax) of 5mm, and a sensitivity of 88 dB (SPL 1m/2.83V), this driver offers impressive output and control. The 4-ohm impedance and low DC resistance (Re) of 3.1 ohms facilitate easy integration with a wide range of amplifiers. Whether you are designing a compact subwoofer or a precise mid-bass module, the SB12CACS25-4 delivers the accuracy and refinement expected from the acclaimed SB Acoustics CAC Ceramic series.