Purifi Audio PTT4.0X08-NFC-01
4" (10cm) bass-midrange driver
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Description
The PTT4.0X08-NFC-01 from Purifi Audio is a 4" (10cm) bass-midrange driver that delivers impressive performance despite its compact size. This model is the 8-ohm version of the PTT4.0X and offers excellent midrange performance, high power handling and extremely low distortion over the entire excursion range. Manufactured in Denmark, it impresses with its natural surround, which ensures reduced resonance and lower distortion. The qualitative highlights and technical features make this bass-midrange driver a sought-after choice among audio enthusiasts.
Highlights
- Compact, but no less impressive
- 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
Features
- Driver size 4"
- Impedance 8 Ohm
- Direct current resistance, RDC 6.4 Ω
- Resonance frequency, fs 41 Hz
- Total Q-factor, Qts 0.37
- Effective area, Sd 56.7 cm2
- Equivalent volume, Vas 5.7 L
- [email protected]/1m 82.0 dB
- Linear Xmax +/- 8.5 mm
- Mechanical Xmax +/- 13.7 mm
- IEC load capacity 200 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.
Dimensions
- Outer diameter: 125mm
- Installation diameter: 100.5mm
- Installation depth: 73.5mm