SB Acoustics SB12PAC25-4 Mid-range Woofer

The SB12PAC25-4 from SB Acoustics is a 4-inch aluminium cone mid-range woofer designed to deliver exceptional clarity and detail in the critical mid-band frequencies. This driver excels in multi-way loudspeaker systems, where accurate midrange reproduction is essential for natural vocals and instrumentals. It is equally suited to high-fidelity home audio builds, studio monitors, or custom car audio installations where space is at a premium but performance cannot be compromised.

Engineered with a lightweight yet rigid aluminium cone and a copper-clad aluminium voice coil, this driver offers low moving mass and excellent thermal management. The total Q factor of 0.31 indicates a well-damped response ideal for sealed enclosures, while the 5mm linear excursion (Xmax) ensures controlled, distortion-free output. With a sensitivity of 87 dB (1m/2.83V) and a DC resistance of 3.1 ohms, it integrates seamlessly into passive crossover networks. The 102mm cut-out diameter and four mounting holes simplify installation, and the 69.3mm depth allows for compact cabinet designs. Whether you are refining an existing design or building from scratch, the SB12PAC25-4 delivers precise, articulate midrange performance that elevates any audio system.