Purifi Audio PTT6.5W04 -NFA-01

Beschreibung

The 6.5" (16.5cm) woofer/midrange driver PTT6.5W04 -NFA-01 from Purifi Audio sets no limits on innovation and efficiency. This revolutionary device offers a unique perspective on driver design, underlined by the innovative "Natural Surround" and an extremely low distortion rate. Thanks to its high power handling and excellent performance in the midrange range, it has improved performance compared to conventional woofers. Developed and manufactured in Denmark, the product meets high quality standards. With its high linear excursion limit and consistent power factor, it proves to be a reliable partner for anyone looking for first-class audio technology.


highlights

• A whole new perspective on driver design
• The Natural Surround from PURIFI
• Extremely low distortion over the entire deflection range
• Developed and manufactured in Denmark
• Excellent midrange performance
• High resilience
• High linear deflection limit with constant force factor

product details

• driver size 6.5"
• impedance 4 ohms
• DC resistance, RDC 3.7 Ω
• resonance frequency, fs 33 Hz
• overall Q-factor, Qts 0.26
• Effective area, Sd 133 cm2
• Equivalent volume, Vas 29 L
• SPL@2.83Vrms /1m 90.3 dB
• Linear Xmax +/- 5.9 mm
• Mechanical Xmax +/- 14.5 mm
• IEC load capacity 250 W
• Cone material Proprietary fiber mix

FAQ

F

: Why is the bead oddly shaped?

A

  This is the PURIFI Natural Surround. Conventional surrounds create distortion when they deform. The shape of the Natural Surround reduces resonance and distortion at the diaphragm edges. It may look strange, but here form follows function. A closer look reveals that the surround actually represents a complex sound wave. We are told that the Natural Surround is also referred to as "wormy" by those in the know.

Data

• nominal diameter 6.5"
• Load capacity (Max) 250  watt
• power RMS  80  watt
• Impedance (Z) 4 Ohm
• Sensitivity 90.3 dB @ 2.83V/1m
• voice coil diameter 39 mm
• DC resistance (Re) 3.7 ohms
• Voice coil induction (Le) 0.32 mH @ 1kHz
• resonance frequency (Fs) 33 Hz
• Mechanical quality (Qms) 6.3
• Electrical quality (Qes) 0.27
• Total quality (Qts) 0.23
• Moving mass (Mms) 21.1g
• Suspension compliance (Cms) 1.10 mm/N
• Membrane area (Sd) 132.7 cm2
• displacement volume (Vd) 78.3 cm3
• force factor (BL) 7.7
• Equivalent volume (Vas) 28.9 liters
• Maximum deflection (Xmax) 5.9 mm
• Mechanical loss  (Rms) 0.7 kg/s

Dimensions

• outer diameter 176 mm
• total depth 90.2 mm
• cutout diameter 145 mm
• bolt circle diameter 166 mm