SB Acoustics SB12MNRX25-4 4" Midrange Woofer

The SB12MNRX25-4 4" Midrange Woofer from SB Acoustics represents a masterful blend of precision engineering and sonic refinement, designed to elevate any audio system with its exceptional clarity and controlled performance. This compact driver is ideally suited for use in high-fidelity two-way or three-way speaker designs, as well as in small subwoofer configurations where space is at a premium but uncompromising sound quality is demanded. Its versatility makes it an excellent choice for both dedicated audiophile projects and professional-grade installations, delivering accurate midrange reproduction with a surprisingly authoritative bass extension.

At the heart of this driver lies a Norex cone, renowned for its stiffness and low mass, which ensures minimal distortion and a natural, uncoloured sound. The 25.4mm voice coil, with an inductance of just 0.14mH, provides exceptional transient response and control. With a total Q factor (Qts) of 0.36, the SB12MNRX25-4 is optimised for use in compact sealed or vented enclosures, offering a resonant frequency of 58Hz and an equivalent volume (Vas) of 5.38 litres. The 4-ohm impedance and sensitivity of 88.5dB (2.83V/1m) ensure efficient power handling, while the robust mechanical design guarantees long-term reliability. This woofer is a testament to SB Acoustics' commitment to delivering high-performance components for discerning builders.