Volt Loudspeakers B2518 Subwoofer

The B2518 Subwoofer from Volt Loudspeakers is a precision-engineered driver designed to deliver deep, controlled low-end extension for audiophile-grade sound systems. This high-excursion subwoofer excels in both home theatre and high-fidelity music setups, where accurate bass reproduction is essential for an immersive listening experience. It is equally suited to custom enclosure designs, offering the flexibility to integrate into sealed or ported configurations for tailored performance.

Technically, the B2518 features a total Q factor (Qts) of 0.36, ensuring a tight and well-damped bass response that minimises boominess. With a maximum linear excursion (Xmax) of 5 mm and a sensitivity of 90 dB SPL at 1 metre with 2.83 V, this driver combines efficiency with impressive output capability. The voice coil inductance (Le) is 0.94 mH, while the DC resistance (Re) measures 5.8 ohms, contributing to stable electrical performance. Mechanical (Qms) and electromagnetic (Qes) Q factors of 1.82 and 0.45 respectively further refine its damping characteristics. The subwoofer has a nominal diameter of 254 mm, a mounting hole diameter of 253 mm, and a depth of 119 mm, with four fixing points on a 268 mm bolt circle. Its robust construction ensures reliable, long-lasting performance, making the B2518 an outstanding choice for achieving authoritative, articulate bass in any serious audio system.