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PURIFI PTT5.25X08-NFA-01 5.25” Midrange 3,8 ohm
PURIFI PTT5.25X08-NFA-01 Mid-range Woofer
Dedicated midrange driver with enhanced efficiency. Negligible force factor modulation. Ultra-low magnetic hysteresis distortion. Utilizes PURIFI’s neutral surround technology.
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PURIFI PTT5.25X08-NFA-01 Mid-range Woofer
Dedicated midrange driver with enhanced efficiency. Negligible force factor modulation. Ultra-low magnetic hysteresis distortion. Utilizes PURIFI’s neutral surround technology.
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Highlights
Negligible Force Factor Modulation and Surround Radiation Distortion
Low Magnetic Hysteresis Distortion
“Real” long-stroke performance: distortion remains low over full excursion
Uncompromised midrange performance
Designed 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 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 to a large degree.
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A whole new take on driver design
PURIFI developed mathematical models for the motor system, suspension, cone, and surround. These models allowed for the optimization of each distortion mechanism separately. This systematic approach reduced all distortions mechanisms and keeps intermodulation distortion low.
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Specifications
Article number PTT5.25X08-NFA-01
Woofer Series PTT NFA
Nominal Diameter 5.25”
Power Handling (RMS) 250 W
Sensitivity SPL@2.83Vrms/1m - 84.7 dB
DC Resistance (Re) 5.9 Ω
Resonant Frequency (Fs) 32 Hz
Total Q (Qts) 0.27
Surface Area of Cone (Sd) 85 cm2
Compliance Equivalent Volume (Vas) 13 L
Maximum Linear Excursion (Xmax) +/- 9.8 mm
Cone / Diaphragm Material Proprietary Fibre Mix
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