SB Acoustics SB17MFC35-4 Bass-midwoofer

The SB17MFC35-4 6" Poly Cone Woofer from SB Acoustics is a meticulously engineered 8 ohm driver designed to deliver exceptional mid-bass performance with remarkable clarity and control. This versatile transducer is ideally suited for high-fidelity loudspeaker systems, home theatre setups, and compact subwoofer applications where accurate, articulate low-frequency reproduction is paramount. Its carefully optimised parameters make it an excellent choice for both sealed and ported enclosures, allowing audiophiles and DIY enthusiasts to achieve a balanced, natural sound signature.

At the heart of this driver lies a copper-clad aluminium voice coil, which combines the conductivity of copper with the lightweight properties of aluminium for improved transient response and thermal management. With a total Q factor (Qts) of just 0.28, the woofer offers tight, well-damped bass extension, while the mechanical (Qms 5.2) and electromagnetic (Qes 0.3) qualities ensure precise control over cone motion. The polypropylene cone material provides stiffness and low mass, contributing to a sensitivity of 90 dB SPL at 2.83V/1m. A maximum linear excursion (Xmax) of 5.5 mm allows for impressive output without distortion, and the low voice coil inductance (Le 0.13 mH) maintains consistent performance across the frequency range. The 146 mm cut-out diameter and four mounting holes facilitate straightforward installation in a variety of cabinet designs, making this woofer a reliable foundation for any serious audio project.