The PTT6.5M04-NFA-01 has been optimized for midrange use and achieves higher sensitivity as compared to the X- and W- versions of the PTT6.5 product family. Furthermore the M-version has a slightly redesigned chassis. Please observe the 2D drawings in the data sheet. PTT6.5M04-NFA-01 – Data Sheet
The driver achieves astounding performance with ultra clean distortion specifications.
Dedicated Midrange Driver with Enhanced Efficiency