PURIFI PTT6.5M08-NFA-01

Mid-range

Nominal diameter6.5″ / 176 mm
Resonance52 Hz
Q factor0.34
Sensitivity88.6 dB
Linear excursion± 2.9 mm
Program Power200 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 88.6dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 52Hz
  • Mechanical quality factor QMS 4.00
  • Electrical quality factor QES 0.37
  • Total quality factor QTS 0.34

Large signal parameters

  • Maximum linear excursion (one way) xmax 2.9mm
  • Maximum excursion before damage xlim 7.3mm
  • Air volume displaced at xmax VD 39cm³
  • Power handling P 80W
  • Program power Pmax 200W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 6.2Ω
  • Inductance (1kHz) LE 0.39mH
  • VC Diameter 39mm
  • Winding height HVC 9.8mm
  • Winding material Copper Clad Aluminum

Magnet

  • Force factor Bl 9.8N/A
  • Motor constant Bl/√RE 3.94N/√W
  • Air gap height HAG 4mm
  • Diameter 100mm

Diaphragm

  • Effective diameter 130mm
  • Effective area SD 133cm²
  • Moving mass MMS 17.7g
  • Moving mass (without air load) MMD 16.5g
  • Material Proprietary Fiber Mix

Suspensions

  • Stiffness KMS 1.89N/mm
  • Compliance CMS 530µm/N
  • Equivalent volume to the compliance VAS 13.2L
  • Mechanical resistance RMS 1.46N·s/m

Dimensions

  • Nominal diameter 6.5
  • 176mm
  • Overall diameter 176mm
  • Baffle cutout diameter 148mm
  • Overall depth 89mm
  • Flange thickness 4mm
  • Mounting depth 85mm
  • Volume occupied by the driver 0.31L
  • Net weight 1.75kg
PURIFI PTT6.5M08-NFA-01 Impedance
PURIFI PTT6.5M08-NFA-01 SPL
PURIFI PTT6.5M08-NFA-01 Force factor
PURIFI PTT6.5M08-NFA-01 Dimensions

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