Purifi Audio PTT6.5W04-NFA-01
6.5" (16.5cm) bass-midrange driver
/piece
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Your advantages with Masori
Description
- A whole new perspective on driver design
- The Natural bead from PURIFI
- Extremely low distortion over the entire deflection range
- Developed and manufactured in Denmark
- Excellent performance in the mid-range
- High load capacity
- High linear deflection limit with constant force factor
The 6.5" (16.5cm) PTT6.5W04-NFA-01 bass-midrange driver from Purifi Audio sets no limits to 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 midrange performance, it offers improved performance over conventional midbass drivers. 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
Product details
- Driver size 6.5"
- Impedance 4 Ohm
- Direct current resistance, RDC 3.7 Ω
- Resonance frequency, fs 33 Hz
- Total Q-factor, Qts 0.26
- Effective area, Sd 133 cm2
- Equivalent volume, Vas 29 L
- [email protected]/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
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: Why is the bead oddly shaped?
A
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 This is the PURIFI Natural surround. Conventional surrounds produce distortions when they deform. The shape of the Natural surround reduces the resonances and distortions at the edges of the membrane. It may look strange, but here form follows function. A closer look reveals that the surround is actually a complex sound wave. We are told that the Natural surround is also referred to as "wormy" by insiders.
Data
- Nominal diameter 6.5"
- Load capacity (max) 250 watts
- Power RMS 80 watts
- Impedance (Z) 4 Ohm
- Sensitivity 90.3 dB @ 2.83V/1m
- Voice coil diameter 39 mm
- Direct current resistance (Re) 3.7 ohms
- Voice coil induction (Le) 0.32 mH @ 1kHz
- Resonant frequency (Fs) 33 Hz
- Mechanical quality (Qms) 6.3
- Electrical quality (Qes) 0.27
- Overall quality (Qts) 0.23
- Moving mass (Mms) 21.1g
- Compliance of the suspension (Cms) 1.10 mm/N
- Diaphragm area (Sd) 132.7 cm2
- Displacement volume (Vd) 78.3 cm3
- Force factor (BL) 7.7
- Equivalent volume (Vas) 28.9 liter
- Maximum deflection (Xmax) 5.9 mm
- Mechanical loss (Rms) 0.7 kg/s
Dimensions
- Outer diameter 176 mm
- Total depth 90.2 mm
- Cut-out diameter 145 mm
- Bolt circle diameter166 mm
Download data sheet
