PURIFI PTT8.0X08-NAB-02 8,0" Mid-range Woofer 8 ohm

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

PURIFI PTT8.0X08-NAB-02 Mid-range Woofer The PTT8.0X08-NAB-02 has been optimized for Midrange use and achieves high sensitivity. 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.

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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 PTT8.0X08-NAB-02

Nominal Diameter 8.0"

Power Handling (RMS) TBD

Impedance (Z) 8 ohms

Sensitivity 86.4 dB @ 2.83V/1m

Voice Coil Diameter 52 mm

DC Resistance (Re) 6 ohm

Voice Coil Inductance (Le) 0.33 mH

Resonant Frequency (Fs) 24 Hz

Mechanical Q (Qms) 5.8

Electromagnetic Q (Qes) 0.37

Total Q (Qts) 0.35

Diaphragm Mass Inc. Airload (Mms) 47.6g

Mechanical Compliance of Suspension (Cms) 0.95 mm/N

Surface Area of Cone (Sd) 235.1 cm2

Volume of Displacement (Vd) 218.6 cm³

BL Product (BL) 10.7

Compliance Equivalent Volume (Vas) 74.5 L

Maximum Linear Excursion (Xmax) 9.3 mm

Driver's Mechanical Losses (Rms) 1.22 kg/s

Cone / Diaphragm Material Black Anodized Aluminum

Surround Material Nitrile rubber

Basket / Frame Material Aluminum alloy diecast

Magnet Material Ferro-magnetic

Overall Outside Diameter 221.3 mm

Overall Depth 108.5 mm

Baffle Cutout Diameter 193 mm

Bolt Circle Diameter 5.2 mm

# Mounting Holes 6