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      PTT4.0X04-NFC-01 Bass-mid Woofer

      PURIFI PTT4.0X04-NFC-01 Bass-mid Woofer

      €299,95

      1 In magazzino6 Arrivo previsto il 27-02-2026

      PURIFI PTT4.0X04-NFC-01 Bass-mid Woofer

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      Marchio: PURIFI
      € 247,89€ 299,95 1 In magazzino6 Arrivo previsto il 27-02-2026
      • -10% Acquista 4 per soli € 269,96 per pezzo
      • -15% Acquista 6 per soli € 254,96 per pezzo

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      • Spedizione gratuita a partire da € 199
      • Ordinato prima delle 16:00, spedito oggi
      • Minimo due anni di garanzia
      • Periodo di recesso di 45 giorni per i resi
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      Descrizione del prodotto PURIFI PTT4.0X04-NFC-01 Bass-mid Woofer

      The PURIFI PTT4.0X04-NFC-01 is the smaller sibling of the PTT6.5W. Don’t let the small size fool you! Thanks to state of the art technology this is probably the most potent and well performing 4” bass-midwoofer around.

       

      Highlights

      • Compact but no less impressive
      • PURIFI ’s Natural Surround
      • Extreme low distortion over full excursion range 
      • Engineered and manufactured in Denmark
      • Excellent midrange performance
      • High power handling
      • High linear excursion limit with constant force factor

       

      Product Details

      PURIFI PTT4.0X04-NFC-01 bass-midwoofer 

       

      PURIFI is a fresh company that designs and manufactures extreme high performance transducers and amplifier modules. Don’t let their freshness fool you; Their leadership team consists out of some well-respected audio technology pioneers. PURIFI developed a deep understanding of many performance degrading aspects for both amplifiers and transducers. Thanks to this understanding the PTT4.0X04-NFC-01 is the most potent 4” bass-mid woofer from our woofer category.

       

      The challenge 

      Loudspeaker drivers are known to add a large, if not the largest, amount of distortion in 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 driver design

      PURIFI developed mathematical models for the motor system, suspension, dome and surround. These models allowed for optimization of each distortion mechanism separately. This systematic approach reduced all distortions mechanisms and keeps intermodulation distortion low. The result makes that the PTT4.0X04-NFC-01 is a compact 4” driver with unparalleled performance. This small driver is really up to big sound.

       

      The mechanism

      Improvement

      Low force factor modulation

      Current through the voice coil is not distorted by cone movement. Gives undistorted midrange regardless of excursion

      Constant force factor over excursion - Bl(x)

      Prevents amplitude devotions of midrange output during large excursion (sometimes called ‘burbling’)

      Low surround radiation distortion

      Reduces harmonic and intermodulation distortion caused by surround

      Low magnetic hysteria distortion

      Reduces harmonic and intermodulation distortion caused by magnetic traces left by previous cycle

       

      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 complex sound wave. We have been told that the Natural Surround is called ‘wormy’ by insiders. 

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      Specifiche

      Numero dell'articolo:
      PTT4.0X04-NFC-01
      EAN
      0691046950062
      Tipo di woofer
      Bass-midwoofer
      Diametro nominale
      4"
      Gestione della potenza (RMS)
      200 Watts
      Gestione della potenza (max)
      -
      Potenza continua del programma
      60 watts
      Impedenza (Z)
      4 ohms
      Sensibilità (SPL a 1m / 2,83V)
      84.5 dB
      Risposta in frequenza
      -
      Diametro della bobina mobile
      30 mm
      Peso del magnete
      -
      Resistenza DC (Re)
      3.8 ohms
      Induttanza della bobina mobile (Le)
      0.38 mH @ 1kHz
      Frequenza di risonanza (Fs)
      38 Hz
      Fattore di merito meccanico (Qms)
      4.5
      Fattore di merito elettromagnetico (Qes)
      0.32
      Fattore di merito totale (Qts)
      0.30
      Massa del diaframma incl. la massa dell'aria (Mms)
      12.8g
      Massa in movimento del diaframma (Mmd)
      -
      Superficie del cono (Sd)
      56.7 cm²
      Volume di spostamento (Vd)
      48.2 cm³
      Prodotto BL (BL)
      6.0
      Volume equivalente di cedevolezza (Vas)
      6.4 liter
      Escursione lineare massima (Xmax)
      8.5 mm
      Perdite meccaniche del driver (Rms)
      0.66 kg/s
      Materiale del cono / diaframma
      Proprietary Fibre Mix
      Materiale della sospensione
      Nitrile rubber
      Materiale del filo della bobina mobile
      Aluminum
      Supporto della bobina mobile
      Fiberglass
      Bobina mobile doppia
      -
      Materiale del cestello / telaio
      Aluminum alloy diecast
      Materiale del magnete
      Ferro-magnetic
      Schermato
      -
      Diametro esterno complessivo
      125 mm
      Profondità complessiva
      78.5 mm
      Diametro del ritaglio del pannello frontale
      100 mm
      Diametro del cerchio dei fori di montaggio
      115 mm
      # Numero di fori di montaggio
      6
      Diametro dei fori di montaggio
      4.2 mm
      Volume per cassa sigillata
      -
      Frequenza di risonanza della cassa sigillata (F3)
      -
      Volume per cassa reflex
      -
      Frequenza di risonanza della cassa reflex (F3)
      -

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      5 di 5
      PURIFI is een jong bedrijf dat extreem goed presterende luidsprekerunits en versterkermodules ontwikkeld en vervaardigd. Jongens... let een beetje op de grammatica.... dit staat zo stom...
      Da Theo Noordewier on 26 Ottobre 2021
      PTT4.0X04-NFC-01 Bass-mid Woofer
      € 247,89
      € 299,95
      PTT4.0X04-NFC-01 Bass-mid Woofer
      PTT4.0X04-NFC-01 (PTT4.0W04)
      1 In magazzino
      6 Arrivo previsto il 27-02-2026
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