PURIFI PTT4.0PR-NF2-01 Passive Radiator
PURIFI PTT4.0PR-NF2-01 Passive Radiator
The PTT4.0PR is a 4” high-performance passive radiator featuring PURIFI ’s research based technologies, including the Natural Surround and a cone made from a proprietary fibre mix.
PURIFI PTT4.0PR-NF2-01 Passive Radiator
The PTT4.0PR is a 4” high-performance passive radiator featuring PURIFI ’s research based technologies, including the Natural Surround and a cone made from a proprietary fibre mix.
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Highlights
A whole new take on passive radiator design
PURIFI ’s Natural Surround
Bimax spider
High linear excursion limit
Tunable mass
Engineered and manufactured in Denmark
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Product Details
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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.
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A whole new take on driver design
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Specifications
Article number PTT4.0PR-NF2-01
Woofer Series -
Woofer Type Passive radiator
Nominal Diameter 4"
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) 24 Hz
Mechanical Q (Qms) 7.0
Electromagnetic Q (Qes) -
Diaphragm Mass Inc. Airload (Mms) 30g
Moving Mass Of Diaphragm (Mmd) -
Mechanical Compliance of Suspension (Cms) 1.41 mm/N
Surface Area of Cone (Sd) 57 cm²
Volume of Displacement (Vd) 79.8 cm³
BL Product (BL) -
Compliance Equivalent Volume (Vas) 6.4 liter
Maximum Linear Excursion (Xmax) 14 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 125 mm
Overall Depth 39.5 mm
Baffle Cutout Diameter 100 mm
Bolt Circle Diameter 115 mm
# Mounting Holes 6
Mounting Hole Diameter 4.2 mm
Sealed Volume -
Sealed F3 -
Vented Volume -
Vented F3 -
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