The B&C Speakers 6NDL44 is a compact yet powerful 6.5-inch neodymium woofer engineered for high-performance mid-bass reproduction in professional audio systems. At its core is a robust 1-inch (44 mm) copper voice coil, designed to operate at 8 ohms and capable of handling 200 watts nominal and up to 400 watts peak power. This driver delivers a wide frequency response from 70 Hz to 6000 Hz with a sensitivity of 91.5 dB, ensuring clear, efficient output across its range. Built for durability and precision, the 6NDL44 features a Kapton voice coil former with a 12 mm winding depth and a 6 mm magnetic gap, supported by a flux density of 1.25 Tesla—providing strong magnetic control and thermal stability. Its Thiele & Small parameters reveal a resonant frequency of 68 Hz and a total Q factor (Qts) of 0.34, making it ideal for compact enclosures. With a diaphragm area of 132 cm² and a compliance volume of 7.5 dm³, it balances punchy bass with responsive dynamics. The driver's motor strength of 10.3 T·m, moving mass of 17.8 grams, and inductance of 0.57 mH contribute to its stable and accurate performance. Mounting is straightforward thanks to its practical dimensions: a 7.4-inch overall diameter, 6.7-inch bolt circle, and 5.7-inch baffle cutout. At just 3.2 inches deep and weighing only 2.6 pounds, the 6NDL44 is a lightweight solution that fits easily into space-conscious designs without sacrificing power or clarity. Whether you're building a portable PA system or upgrading a studio monitor, this woofer offers a reliable blend of efficiency, precision, and versatility.