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PTT6.5M04-NFA-01

https://ptt.purifi-audio.com/web/image/product.template/269/image_1920?unique=75e3ba4

6.5" Ultra Low Distortion Midrange

DKK 2,725.00 2725.0 DKK DKK 2,725.00 VAT Excluded

DKK 2,725.00 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
  • Powertest crossover
  • 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, 1000-2800Hz
  • SPL @ 1W/1m, 1000-2800Hz
  • 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
  • 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

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NOTE: VAT amount will vary based on ship-to country
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:

Description

The 6.5” midrange driver has been optimized for midrange use and achieves higher sensitivity as compared to the X- and W- versions of the PTT6.5 product family. 
It incorporates the easily recognizable PURIFI NeutralSurround suspension and ultra-linear motor system PURIFI PureDrive technology resulting in astounding performance with ultra clean distortion specifications.

The PTT6.5M04-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)
  • Dedicated midrange driver with enhanced efficiency
  • Designed and manufactured in Denmark


Specifications

General Specifications
Type Midrange
Size 6.5in
Nominal impedance 4Ω
Cone material Proprietary Fiber Mix
Linear excursion, Xlin ±2.9mm
Maximum mechanical excursion, Xmax ±14.5mm
Motor efficiency factor, Beta 16.8 (N/A)^2/Ω
Efficiency Bandwidth Product, EBP 166.7Hz
Long term maximum power 250W
Rated noise power, 100h 100W
Powertest crossover 2nd order high pass Butterworth @ 200Hz
Electrical & Acoustical Parameter
DC resistance 3.9Ω
Minimum impedance above resonance, Zmin 4.2Ω
Frequency for minimum impedance, fmin 412Hz
Maximum impedance, Zo 48Ω
Voice Coil inductance @ 1kHz 0mm, Le 0.26mH
SPL @ 2.83Vrms/1m, 1000-2800Hz 93.2dB
SPL @ 1W/1m, 1000-2800Hz 90.4dB
Thiele/Small Paramters
Resonance frequency, fs 55Hz
Mechanical Q factor, Qms 4.2
Electrical Q factor, Qes 0.36
Total Q factor, Qts 0.33
Equivalent volume, Vas 11.7L
Effective piston area, Sd 132.7cm2
Effective piston diameter, D 13.0cm
Force factor, Bl 8.1N/A
Mechanical resistance, Rms 1.47kg/s
Moving mass, Mms 17.8g
Suspension compliance, Cms 0.47mm/N
Typical Box Tunings
Typical corner frequency, sealed B2 alignment 117.9Hz
Box volume, sealed B2 alignment 3.3L
Voice Coil Properties
Voice Coil diameter 39mm
Voice Coil length 9.8mm
Voice Coil layers 4
Airgap height 4.0mm
Winding material CCAW
Physical Dimensions
Basket diameter 176mm
Cutout diameter 148mm
Mounting hole pattern diameter 166mm
Mounting hole diameter 5.2mm
Magnet diameter 100mm
Outer flange height 3.6mm
Build-in depth 85.2mm
Weight 1.75kg