PURIFI PTT5.25M04-NAA-05 Mid-range Woofer

The PURIFI PTT5,25M04-NAA-05 is a 5.25-inch ultra-low-distortion mid-bass driver that sets a new benchmark for clean, accurate sound reproduction. Engineered for discerning audiophiles and professional system designers, this driver delivers exceptionally pure mid-bass with vanishingly low distortion, making it an ideal choice for high-fidelity loudspeakers, studio monitors, and custom audio installations where precision and clarity are paramount.

This driver excels in both two-way and multi-way designs, serving as a dedicated mid-bass unit that bridges the gap between deep bass and upper frequencies. Its controlled response and high sensitivity of 87.4 dB SPL at 2.83V ensure it integrates seamlessly with a wide range of tweeters and subwoofers, while its compact 133.4 mm nominal diameter and 75 mm mounting depth allow for flexible enclosure designs, including bookshelf speakers and slim floor-standing cabinets.

Technically, the PURIFI PTT5,25M04-NAA-05 features an aluminium cone diaphragm for exceptional stiffness-to-weight ratio, minimising breakup modes. The motor system is optimised with a low DC resistance of 3.9 ohms and a total Q factor of just 0.24, combining a mechanical Q of 6.5 with an electromagnetic Q of 0.25 for tight, controlled bass. The voice coil inductance is a mere 0.26 mH, ensuring excellent high-frequency extension and transient response. With six mounting holes and a cut-out diameter of 121 mm, installation is straightforward.

This driver represents a significant advancement in mid-bass transducer technology, offering audiophile-grade performance for those who demand the very best in sound quality.