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        PTT8.0X08-NAB-01 Mid-range Woofer

        PTT8.0X08-NAB-01 Mid-range Woofer

        €699,95

        PURIFI PTT8.0X08-NAB-01 Mid-range Woofer

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        Brand: PURIFI
        € 578,47€ 699,95 2 In stock8 expected on 12-07-2024
        • -5% Purchase 4 for only € 664,95 per piece

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        Product description

        Dedicated midrange driver with enhanced efficiency. Negligible force factor modulation. Ultra-low magnetic hysteresis distortion. Utilizes PURIFI’s neutral surround technology.

         

        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

         

        Product Details

        PURIFI PTT8.0X08-NAB-01 Mid-range Woofer

         

        The PTT8.0X08-NAB-01 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. 

         

        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.

         

        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. 

         

        The mechanism

        Improvement

        Low force factor modulation

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

        Constant force factor over excursion - Bl(x)

        Prevents amplitude devotions of midrange output during the 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 the previous cycle

         

        FAQ

        Q: Why is this surround odd-shaped?

        A: This is the PURIFI Natural Surround. Conventional surroundings 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. 

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        Specifications

        Article number
        PTT8.0X08-NAB-01
        Nominal Diameter
        8.0"
        Power Handling (RMS)
        TBD
        Impedance (Z)
        8 ohms
        Sensitivity (SPL at 1m / 2.83V)
        86.4 dB
        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

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        5 of 5
        -
        By Tim on 8 May 2023
        PTT8.0X08-NAB-01 Mid-range Woofer
        € 578,47
        € 699,95
        PTT8.0X08-NAB-01 Mid-range Woofer
        2 In stock
        8 expected on 12-07-2024
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