PTT5.25X08-NFA-01

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5.25" Ultra Low Distortion Extended Woofer

DKK 2,200.00 2200.0 DKK DKK 2,200.00 VAT Excluded

DKK 2,200.00 VAT Excluded

Not Available For Sale

  • Type
  • Size
  • Nominal impedance
  • Cone material
  • Linear excursion, Xlin
  • Maximum mechanical excursion, Xmax
  • Motor efficiency factor, Beta
  • Efficiency Bandwidth Product, EBP
  • Long term maximum power
  • Rated noise power, 100h
  • DC resistance
  • Minimum impedance above resonance, Zmin
  • Frequency for minimum impedance, fmin
  • Maximum impedance, Zo
  • Voice Coil inductance @ 1kHz 0mm, Le
  • SPL @ 2.83Vrms/1m, 300-800Hz
  • SPL @ 1W/1m, 300-800Hz
  • Resonance frequency, fs
  • Mechanical Q factor, Qms
  • Electrical Q factor, Qes
  • Total Q factor, Qts
  • Equivalent volume, Vas
  • Effective piston area, Sd
  • Effective piston diameter, D
  • Force factor, Bl
  • Mechanical resistance, Rms
  • Moving mass, Mms
  • Suspension compliance, Cms
  • Typical corner frequency, sealed B2 alignment
  • Box volume, sealed B2 alignment
  • Typical corner frequency, bass reflex PTT alignment
  • Box resonance, bass reflex PTT alignment
  • Box volume, bass reflex PTT alignment
  • Port diameter, bass reflex PTT alignment
  • Port length, bass reflex PTT alignment
  • Typical corner frequency, 2xPR PTT alignment
  • Box volume, 2xPR PTT alignment
  • PR mass per PR, 2xPR PTT alignment
  • Voice Coil diameter
  • Voice Coil length
  • Voice Coil layers
  • Airgap height
  • Winding material
  • Basket diameter
  • Cutout diameter
  • Mounting hole pattern diameter
  • Mounting hole diameter
  • Magnet diamter
  • Outer flange height
  • Build-in depth
  • Weight
  • Internal volume displacement

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Payment fees (e.g. Stripe fees) are not refundable 
All transducers are made-to-order
Expect 8-12 weeks of delivery time   
Terms and Conditions


Data Sheet:
Frequency Response and Impedance Data:

Downloads

3D Drawing 


Description

5.25” member of PURIFI's famous ultra low distortion extended-stroke woofer family. The 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 PTT5.25X08-NFA-01 features:

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


Specifications

General Specifications
Type Extended Woofer
Size 5.25in
Nominal impedance
Cone material Proprietary Fiber Mix
Linear excursion, Xlin ±9.8mm
Maximum mechanical excursion, Xmax ±14.0mm
Motor efficiency factor, Beta 13.7 (N/A)^2/Ω
Efficiency Bandwidth Product, EBP 118.5Hz
Long term maximum power 250W
Rated noise power, 100h 80W
Electrical & Acoustical Parameter
DC resistance 5.9Ω
Minimum impedance above resonance, Zmin 6.8Ω
Frequency for minimum impedance, fmin 262Hz
Maximum impedance, Zo 144Ω
Voice Coil inductance @ 1kHz 0mm, Le 0.55mH
SPL @ 2.83Vrms/1m, 300-800Hz 84.7dB
SPL @ 1W/1m, 300-800Hz 83.9dB
Thiele/Small Paramters
Resonance frequency, fs 32Hz
Mechanical Q factor, Qms 6.6
Electrical Q factor, Qes 0.28
Total Q factor, Qts 0.27
Equivalent volume, Vas 13.2L
Effective piston area, Sd 84.9cm2
Effective piston diameter, D 10.4cm
Force factor, Bl 9.0N/A
Mechanical resistance, Rms 0.59kg/s
Moving mass, Mms 19.6g
Suspension compliance, Cms 1.30mm/N
Typical Box Tunings
Typical corner frequency, sealed B2 alignment 83.8Hz
Box volume, sealed B2 alignment 2.3L
Typical corner frequency, bass reflex PTT alignment 44.9Hz
Box resonance, bass reflex PTT alignment 47.1Hz
Box volume, bass reflex PTT alignment 6.3L
Port diameter, bass reflex PTT alignment 5.6cm
Port length, bass reflex PTT alignment 52.7cm
Typical corner frequency, 2xPR PTT alignment 47.6Hz
Box volume, 2xPR PTT alignment 5.5L
PR mass per PR, 2xPR PTT alignment 47.6g
Voice Coil Properties
Voice Coil diameter 39mm
Voice Coil length 23.6mm
Voice Coil layers 4
Airgap height 4mm
Winding material CCAW
Physical Dimensions
Basket diameter 147mm
Cutout diameter 121mm
Mounting hole pattern diameter 138mm
Mounting hole diameter 4.2mm
Magnet diamter 100mm
Outer flange height 3.6mm
Build-in depth 75.0mm
Weight 1.75kg
Internal volume displacement 0.30L