Sure Electronics AA-SP15116 SUFR7010 Full-range Woofer

The Sure Electronics AA-SP15116 SUFR7010 is a 2.75-inch full-range woofer designed to deliver clear, balanced audio in space-constrained applications. This broadband driver excels in scenarios where a single speaker must cover a wide frequency range, making it ideal for compact bookshelf speakers, multimedia systems, portable Bluetooth enclosures, or custom audio projects where size is at a premium. Its versatility also suits small soundbars and desktop monitors, providing a cohesive soundstage without the need for a separate tweeter.

Technically, this woofer features a total Q factor (Qts) of 0.7, which ensures well-damped performance in small sealed or ported enclosures, offering tight bass response and smooth roll-off. The 79 dB sensitivity (SPL at 1m/2.83V) is typical for a driver of this size, while the 0.5 mm Xmax allows for moderate linear excursion. With a DC resistance (Re) of 3.72 ohms and a voice coil inductance (Le) of 0.46 mH, it presents a manageable load for most amplifiers. The resonance frequency (Fs) of 1 Hz is notably low, indicating extended low-frequency capability for its diameter. The equivalent volume (Vas) of 1.25 litres and moving mass (Mms) of 2.62 grams further define its suitability for compact designs. Whether for upgrading existing systems or building new ones, this Sure Electronics woofer offers reliable full-range performance in a small footprint.