SB Acoustics SB23MFCL45-4 Subwoofer

The SB23MFCL45-4 Subwoofer from SB Acoustics delivers deep, controlled bass with exceptional clarity, making it an ideal choice for audiophiles and DIY enthusiasts seeking high-fidelity low-frequency reproduction. Engineered for precision, this 8-inch driver brings authoritative low end to stereo systems, home theatre setups, or custom speaker designs, where its compact form factor allows integration into sealed or ported enclosures without compromising performance.

Featuring a polypropylene cone, the subwoofer minimises distortion and ensures clean, articulate bass across its operating range. The total Q factor of 0.34 enables use in compact enclosures while maintaining tight, well-defined output. With a sensitivity of 87.4 dB (1m/2.83V) and a DC resistance of 3.3 ohms, it pairs efficiently with moderate amplification. The copper voice coil wire and low inductance of 0.73 mH contribute to excellent transient response, while the mechanical (Qms 7.7) and electrical (Qes 0.36) damping factors ensure controlled cone movement. The 203.2 mm nominal diameter and 122.1 mm mounting depth fit standard cutouts, with eight fixing holes for secure installation.

This subwoofer combines robust build quality with refined acoustic engineering, offering a reliable foundation for bass reproduction that enhances any audio system.