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PTT4.0X08-NFC-0Extended Woofer 1

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4" Ultra Low Distortion Extended Woofer

DKK 1,725.00 1725.0 DKK DKK 1,725.00 Tax Excluded

OEM Only

  • 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
  • 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 diameter
  • Outer flange height
  • Build-in depth
  • Weight
  • 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
  • Internal volume displacement

This combination does not exist.

Type Extended Woofer
Size 4in
Nominal impedance 8Ω
Cone material Proprietary Fiber Mix
Linear excursion, Xlin ±8.8mm
Maximum mechanical excursion, Xmax ±13.7mm
Motor efficiency factor, Beta 7.4 (N*A)^2/Ω
Efficiency Bandwidth Product, EBP 110.8Hz
Long term maximum power 200W
Rated noise power, 100h 60W
DC resistance 6.4Ω
Minimum impedance above resonance, Zmin 7.1Ω
Frequency for minimum impedance, fmin 268Hz
Maximum impedance, Zo 72Ω
Voice Coil inductance @ 1kHz 0mm, Le 0.51mH
SPL @ 2.83Vrms/1m, 300-800Hz 82.0dB
SPL @ 1W/1m, 300-800Hz 81.5dB
Resonance frequency, fs 41Hz
Mechanical Q factor, Qms 4.2
Electrical Q factor, Qes 0.41
Total Q factor, Qts 0.37
Equivalent volume, Vas 5.7L
Effective piston area, Sd 56.7cm2
Effective piston diameter, D 8.5cm
Force factor, Bl 6.9N/A
Mechanical resistance, Rms 0.73kg/s
Moving mass, Mms 11.7g
Suspension compliance, Cms 1.25mm/N
Typical corner frequency, sealed B2 alignment 78.3Hz
Box volume, sealed B2 alignment 2.1L
Typical corner frequency, bass reflex PTT alignment 38.4Hz
Box resonance, bass reflex PTT alignment 42.2Hz
Box volume, bass reflex PTT alignment 6.0L
Port diameter, bass reflex PTT alignment 4.1cm
Port length, bass reflex PTT alignment 37.0cm
Typical corner frequency, 2xPR PTT alignment 45.0Hz
Box volume, 2xPR PTT alignment 4.7L
PR mass per PR, 2xPR PTT alignment 30.4g
Voice Coil diameter 30mm
Voice Coil length 21.6mm
Voice Coil layers 4
Airgap height 4.0mm
Winding material Alu
Basket diameter 125mm
Cutout diameter 101mm
Mounting hole pattern diameter 115mm
Mounting hole diameter 4.2mm
Magnet diameter 90mm
Outer flange height 3.6mm
Build-in depth 73.5mm
Weight 1.25kg
Internal volume displacement 0.23L
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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   
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Description

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 PTT4.0X08-NFC-01 features:

  • Vibroacoustic optimized cone and dust cap in proprietary paper fiber mix
  • 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