Purifi Audio PTT4.0X04-NFC-01
4" (10cm) midrange driver
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Description
The PTT4.0X04-NFC-01 is a 4" (10 cm) midrange driver from the renowned manufacturer Purifi Audio. Despite its compact size, this bass-midrange driver impresses with its high power handling and excellent midrange performance. Its low distortion over the entire excursion and frequency range and the special natural surround make the PTT4.0X04-NFC-01 a technological masterpiece in the segment. Developed and manufactured in Denmark, this midrange driver represents the quintessence of precision and professionalism.
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
- Treibergröße 4" (10cm)
- Impedance 4 Ohm
- Gleichstromwiderstand, RDC 3,8 Ω
- Resonanz-Frequenz, fs 38 Hz
- Total Q-factor, Qts 0.30
- Effektive Fläche, Sd 57 cm2
- Äquivalentes Volumen, Vas 6,4 L
- [email protected]/1m 84,5 dB
- Linear Xmax +/- 8.5 mm
- Mechanical Xmax +/- 13.7 mm
- IEC Belastbarkeit 200 W RMS
- Cone material Proprietary fiber mix
FAQ
F
-
: Why is the bead oddly shaped?
A
-
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
- Nenndurchmesser 4"
- Belastbarkeit (Max) 200 Watt
- Leistung RMS 60 Watt
- Impedance (Z) 4 Ohm
- Empfindlichkeit 84.5 dB @ 2.83V/1m
- Voice coil diameter 30 mm
- Gleichstromwiderstand (Re) 3.8 ohms
- Schwingspuleninduktion (Le) 0.38 mH @ 1kHz
- Resonant frequency (Fs) 38 Hz
- Mechanical quality (Qms) 4.5
- Elektrische Güte (Qes) 0.32
- Overall quality (Qts) 0.30
- Bewegliche Masse (Mms) 12.8g
- Membranfläche (Sd) 56.7 cm²
- Verschiebevolumen (Vd) 48.2 cm³
- Kraftfaktor (BL) 6.0
- Äquivalentvolumen (Vas) 6.4 liter
- Maximum deflection (Xmax) 8.5 mm
- Mechanischer Verlust (Rms) 0.66 kg/s
Dimensions
- Outer diameter: 125mm
- Installation diameter: 100.5mm
- Installation depth: 73.5mm