SB Acoustics SB12NRX25-4 4" Midrange Woofer

The SB12NRX25-4 4" Midrange Woofer from SB Acoustics represents a refined choice for audio enthusiasts seeking precise and dynamic sound reproduction. As part of the esteemed NRX Norex series, this driver is engineered to deliver exceptional clarity and control across the mid-bass and midrange frequencies, making it an ideal component for high-fidelity loudspeaker designs.

This woofer excels in a variety of applications, including two-way or three-way speaker systems, where accurate midrange performance is critical. It is particularly well-suited for use in compact bookshelf speakers, centre channels, or as a dedicated midrange driver in multi-way setups. Its controlled response ensures seamless integration with both tweeters and subwoofers, allowing for a cohesive and immersive listening experience.

Technically, the SB12NRX25-4 boasts a total Q factor (Qts) of 0.4, which provides a well-damped and controlled bass response suitable for sealed or vented enclosures. With a resonance frequency (Fs) of 55 Hz and a maximum linear excursion (Xmax) of 5 mm, it offers impressive low-end extension for its size. The 4-ohm impedance and sensitivity of 87.5 dB (1m/2.83V) ensure efficient power handling, while the low voice coil inductance (Le) of 0.14 mH contributes to extended high-frequency response and reduced distortion. The 3.1-ohm DC resistance (Re) and robust mechanical design further enhance its reliability.

In summary, the SB12NRX25-4 is a versatile and high-performance midrange woofer that combines advanced engineering with practical usability, making it a superb choice for discerning audio projects.