GRS 15PF-8 15" Paper Cone Foam Surround Woofer

The GRS 15PF-8 is a 15-inch paper cone woofer engineered to deliver deep, controlled bass for a wide range of audio applications. As a versatile bass and mid-bass driver, it excels in both home hi-fi and professional sound reinforcement systems, making it an ideal choice for custom speaker builds, subwoofer enclosures, or upgrading existing cabinets. Its robust construction ensures reliable performance in sealed or ported designs, where its extended low-frequency response adds weight and presence to music and film soundtracks.

Technically, this woofer features a treated paper diaphragm that provides a natural, warm tonal character, while the foam surround enhances linear excursion for improved bass extension. The ferrite magnet motor assembly, combined with a 7.21-ohm DC resistance and 1.14 mH voice coil inductance, ensures efficient power handling and controlled damping. With a total Q factor (Qts) of 1.39, the driver is well-suited for sealed enclosures, delivering a smooth roll-off down to a -3dB point of 29 Hz. The 4 mm Xmax allows for moderate excursion without distortion, and the eight mounting holes simplify installation in standard 15-inch cutouts.

Whether you are designing a high-fidelity subwoofer or a full-range loudspeaker, the GRS 15PF-8 offers a compelling balance of performance and value, bringing authoritative low-end to your audio projects.