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      PURIFI PTT6.5PR-NF1-01 Passive Radiator

      € 107,40€ 129,95 3 In stock: delivery time 1-4 business days
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      Product description

      The PTT6.5PR-NF1-01 is a 6.5” high-performance passive radiator featuring PURIFI ' s research-based technologies, including the Natural Surround and a cone made from a proprietary fiber mix.

       

      Highlights

      • A whole new take on passive radiator design
      • PURIFI ’s Natural Surround
      • Bimax spider
      • Engineered and manufactured in Denmark
      • High linear excursion limit
      • Tunable mass

       

      Product Details

      PURIFI PTT6.5PR-NF1-01 passive radiator 

       

      PURIFI is a fresh company that designs and manufactures extremely high-performance transducers and amplifier modules. Don’t let the freshness fool you; Their leadership team consists out of some well-respected audio technology pioneers. PURIFI developed a deep understanding of many performances degrading aspects for both amplifiers and transducers. Thanks to this understanding the passive radiators from PURIFI are the most high-end passive radiators available at SoundImports.

       

      The challenge 

      Loudspeaker drivers are known to add a large, if not the largest, amount of distortion on an audio signal chain. Reducing this distortion is a challenge with the complication of fine-tuning to improve one part (e.g. harmonic distortion) often results in a degradation of another part (e.g. intermodulation distortion). These distortions consist out of several separate distortion mechanisms. By carefully mapping and completely understanding these mechanisms, PURIFI succeeded in improving the overall performance by a large degree.

       

      A whole new take on passive radiator design

      PURIFI developed mathematical models for the suspension, cone, and surround. These models allowed for the optimization of different distortion mechanisms separately. The result makes that the PTT6.5PR-NF1-01 is a perfect passive radiator to accompany the PTT6.5W04 and PTT6.5W08 long-stroke bass-midwoofers.

       

      The mechanism

      Improvement

      Low surround radiation distortion

      Reduces harmonic and intermodulation distortion caused by surround

       

      FAQ 

      Q: Why is this surround odd shaped?

      A: This is the PURIFI Natural Surround. Conventional surrounds create distortion as they deform. The shape of the Natural Surround reduces cone edge resonances and distortion. It might be odd looking, but form follows function here. A more detailed look shows that the surround actually represents a complex sound wave. We are told that the Natural Surround is also called ‘wormy’ by insiders.

      Specifications

      Article number
      PTT6.5PR-NF1-01
      Woofer Series
      -
      Woofer Type
      Passive radiator
      Nominal Diameter
      6.5"
      Power Handling (RMS)
      -
      Power Handling (max)
      -
      Continuous Program Power
      -
      Impedance (Z)
      -
      Sensitivity
      -
      Frequency Response
      -
      Voice Coil Diameter
      -
      Magnet Weight
      -
      DC Resistance (Re)
      -
      Voice Coil Inductance (Le)
      -
      Resonant Frequency (Fs)
      17 Hz
      Mechanical Q (Qms)
      10.9
      Electromagnetic Q (Qes)
      -
      Total Q (Qts)
      -
      Diaphragm Mass Inc. Airload (Mms)
      80g
      Moving Mass Of Diaphragm (Mmd)
      -
      Mechanical Compliance of Suspension (Cms)
      1.05 mm/N
      Surface Area of Cone (Sd)
      133 cm²
      Volume of Displacement (Vd)
      199.5 cm³
      BL Product (BL)
      -
      Compliance Equivalent Volume (Vas)
      26.2 liter
      Maximum Linear Excursion (Xmax)
      15 mm
      Driver's Mechanical Losses (Rms)
      -
      Cone / Diaphragm Material
      Proprietary Fibre Mix
      Surround Material
      Nitrile rubber
      Voice Coil Wire Material
      -
      Voice Coil Former
      -
      Dual Voice Coil
      -
      Basket / Frame Material
      Aluminum alloy diecast
      Magnet Material
      -
      Shielded
      -
      Overall Outside Diameter
      176 mm
      Overall Depth
      48.7 mm
      Baffle Cutout Diameter
      144 mm
      Bolt Circle Diameter
      166 mm
      # Mounting Holes
      6
      Mounting Hole Diameter
      5.1 mm
      Sealed Volume
      -
      Sealed F3
      -
      Vented Volume
      -
      Vented F3
      -

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      PTT6.5PR-NF1-01 Passive Radiator
      € 107,40
      € 129,95
      PTT6.5PR-NF1-01 Passive Radiator
      PTT6.5PR-NF1-01 (PTT6.5PR)
      3 In stock: delivery time 1-4 business days
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