PURIFI PTT5.25M04-NAA-05

Mid-range

Nominal diameter5.25″ / 147 mm
Resonance39 Hz
Q factor0.24
Sensitivity85.4 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 85.4dB

Thiele & Small parameters

  • Resonance frequency (free air) fS 39Hz
  • Mechanical quality factor QMS 6.50
  • Electrical quality factor QES 0.25
  • Total quality factor QTS 0.24

Large signal parameters

  • Maximum linear excursion (one way) xmax 2.9mm
  • Maximum excursion before damage xlim 7mm
  • Air volume displaced at xmax VD 25cm³
  • Power handling P 70W
  • Program power Pmax 200W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.9Ω
  • Inductance (1kHz) LE 0.26mH
  • VC Diameter 39mm
  • Winding height HVC 9.8mm
  • Winding material Copper Clad Aluminum

Magnet

  • Force factor Bl 8.1N/A
  • Motor constant Bl/√RE 4.1N/√W
  • Air gap height HAG 4mm
  • Diameter 100mm

Diaphragm

  • Effective diameter 104mm
  • Effective area SD 84.9cm²
  • Moving mass MMS 17.3g
  • Moving mass (without air load) MMD 16.7g
  • Material Black Anodized Aluminum

Suspensions

  • Stiffness KMS 1.03N/mm
  • Compliance CMS 970µm/N
  • Equivalent volume to the compliance VAS 9.9L
  • Mechanical resistance RMS 0.65N·s/m

Dimensions

  • Nominal diameter 5.25
  • 147mm
  • Overall diameter 147mm
  • Baffle cutout diameter 101mm
  • Overall depth 79mm
  • Flange thickness 4mm
  • Mounting depth 75mm
  • Volume occupied by the driver 0.3L
  • Net weight 1.75kg
PURIFI PTT5.25M04-NAA-05 Impedance
PURIFI PTT5.25M04-NAA-05 SPL
PURIFI PTT5.25M04-NAA-05 Force factor
PURIFI PTT5.25M04-NAA-05 Dimensions

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fS45 Hz
SD88 cm²
QTS0.31
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