PHD MF 6.1 Coax coaxial speakers (165 mm).

PHD MF 6.1 C 2-Way Coaxial Speakers 6.5" (165 mm).

MF - Mineral Fiber
The bass is the foundation of all music and this line has been design with this goal in mind: to provide you the best sensations of the lowest frequencies. 
If you want to feel the Music, MF is the best choice. 
The Mineral Fiber cone provides a great impact and a low extension for a realistic listening experience of the lower end of the frequencies.

1" soft dome neodymium Tweeter, 6.5" mineral fiber cone Mid/Bass driver with High-Tight fiber basket.
Power Handling RMS/MAX: 
70 /140 Watts. 
Sensitivity (SPL@1W): 
- 90 dB 
Frequency Response: 
45Hz - 20 Khz