PURIFI PTT6.5W04-NFA-01

Woofer

Nominal diameter6.5″ / 176 mm
Resonance33 Hz
Q factor0.26
Sensitivity87.3 dB
Linear excursion± 5.9 mm
Program Power250 W
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply

Specifications

  • Sensitivity (1W, 1m, infinite baffle) SPL1W 87.3dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 33Hz
  • Mechanical quality factor QMS 6.30
  • Electrical quality factor QES 0.27
  • Total quality factor QTS 0.26

Large signal parameters

  • Maximum linear excursion (one way) xmax 5.9mm
  • Maximum excursion before damage xlim 14.5mm
  • Air volume displaced at xmax VD 78cm³
  • Power handling P 80W
  • Program power Pmax 250W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.7Ω
  • Inductance (1kHz) LE 0.32mH
  • VC Diameter 39mm
  • Winding height HVC 15.8mm
  • Winding material Copper Clad Aluminum

Magnet

  • Force factor Bl 7.7N/A
  • Motor constant Bl/√RE 4N/√W
  • Air gap height HAG 4mm
  • Diameter 100mm

Diaphragm

  • Effective diameter 130mm
  • Effective area SD 133cm²
  • Moving mass MMS 21.1g
  • Moving mass (without air load) MMD 19.9g
  • Material Proprietary Fiber Mix

Suspensions

  • Stiffness KMS 0.909N/mm
  • Compliance CMS 1100µm/N
  • Equivalent volume to the compliance VAS 28.9L
  • Mechanical resistance RMS 0.7N·s/m

Dimensions

  • Nominal diameter 6.5
  • 176mm
  • Overall diameter 176mm
  • Baffle cutout diameter 145mm
  • Overall depth 89mm
  • Flange thickness 4mm
  • Mounting depth 85mm
  • Volume occupied by the driver 0.31L
  • Net weight 1.75kg
PURIFI PTT6.5W04-NFA-01 Impedance
PURIFI PTT6.5W04-NFA-01 SPL
PURIFI PTT6.5W04-NFA-01 Force factor
PURIFI PTT6.5W04-NFA-01 Dimensions

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