Purifi PTT4.0X04-NAC-03

€295.00 *

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Delivery time approx. 5 working days

  • PTT4.0X08-NAC-03
Purifi PTT4.0X04-NAC-03   The 4” long-stroke driver incorporates the easily... more
Product information "Purifi PTT4.0X04-NAC-03"

Purifi PTT4.0X04-NAC-03

 

The 4” long-stroke driver incorporates the easily recognizable PURIFI NeutralSurround suspension and ultra-linear motor system PURIFI PureDrive technology working in concert to elevate performance to a whole new level despite of it’s compact size.

 

The PTT4.0X04-NAC-03 features:

 

  • Vibroacoustic optimized cone and dust cap in black anodized aluminum
  • Negligible Force Factor Modulation (FFM) and Surround Radiation Distortion (SRD)
  • Low Magnetic Hysteresis Distortion (MHD)
  • "Real" long-stroke performance with distortion remaining low over full excursion
  • Uncompromised midrange performance
  • Designed and manufactured in Denmark 

 

General Specifications

  • Nominal impedance 4Ω
  • Cone material Black Anodized Aluminum
  • Linear excursion, Xlin ±8.8mm
  • Maximum mechanical excursion, Xmax ±13.7mm
  • Motor efficiency factor, Beta 9.8 (N/A)^2/Ω
  • Efficiency Bandwidth Product, EBP 129.0Hz
  • Long term maximum power 200W
  • Rated noise power, 100h 60W
  • Electrical & Acoustical Parameter
  • DC resistance 3.8Ω
  • Minimum impedance above resonance, Zmin 4.4Ω
  • Frequency for minimum impedance, fmin 256Hz
  • Maximum impedance, Zo 46Ω
  • Voice Coil inductance @ 1kHz 0mm, Le 0.38mH
  • SPL @ 2.83Vrms/1m, 300-800Hz 83.9dB
  • SPL @ 1W/1m, 300-800Hz 81.3dB

 

Thiele/Small Paramters

  • Resonance frequency, fs 40Hz
  • Mechanical Q factor, Qms 3.8
  • Electrical Q factor, Qes 0.34
  • Total Q factor, Qts 0.31
  • Equivalent volume, Vas 5.5L
  • Effective piston area, Sd 56.7cm2
  • Effective piston diameter, D 8.5cm
  • Force factor, Bl 6.1N/A
  • Mechanical resistance, Rms 0.87kg/s
  • Moving mass, Mms 13.0g
  • Suspension compliance, Cms 1.22mm/N
  • Typical Box Tunings
  • Typical corner frequency, sealed B2 alignment 91.2Hz
  • Box volume, sealed B2 alignment 1.3L
  • Typical corner frequency, bass reflex PTT alignment 47.3Hz
  • Box resonance, bass reflex PTT alignment 50.4Hz
  • Box volume, bass reflex PTT alignment 3.7L
  • Port diameter, bass reflex PTT alignment 4.5cm
  • Port length, bass reflex PTT alignment 50.3cm
  • Typical corner frequency, 2xPR PTT alignment 52.0Hz
  • Box volume, 2xPR PTT alignment 3.1L
  • PR mass per PR, 2xPR PTT alignment 32.7g
  • Voice Coil Properties
  • Voice Coil diameter 30mm
  • Voice Coil length 21.6mm
  • Voice Coil layers 4
  • Airgap height 4mm
  • Winding material Alu

 

Physical Dimensions

  • Basket diameter 125mm
  • Cutout diameter 101mm
  • Mounting hole pattern diameter 115mm
  • Mounting hole diameter 4.2mm
  • Magnet diamter 90mm
  • Outer flange height 3.6mm
  • Build-in depth 73.5mm
  • Weight 1.25kg
  • Internal volume displacement 0.23L
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