Purifi Audio PTT4.0X08-NFC-01

Beschreibung

The PTT4.0X08-NFC-01 from Purifi Audio is a 4" (10cm) mid-woofer that offers impressive performance despite its compact size. This model is the 8 ohm version of the PTT4.0X and offers excellent mid-range performance, high power handling and extremely low distortion across the entire excursion range. Made in Denmark, it impresses with its natural surround, which ensures reduced resonance and lower distortion. The qualitative highlights and technical features make this mid-woofer the sought-after choice among audio enthusiasts.

highlights

• Compact but no less impressive
• 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

characteristics

• driver size 4"
• impedance 8 ohms
• DC resistance, RDC 6.4 Ω
• resonance frequency, fs 41 Hz
• overall Q-factor, Qts 0.37
• Effective area, Sd 56.7 cm2
• Equivalent volume, Vas 5.7 L
• SPL@2.83Vrms /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

: 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.

Dimensions

• Outer diameter: 125mm
• Installation diameter: 100.5mm
• Installation depth: 73.5mm