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PURIFI PTT5.25X08-NFA-01 Mid-range Woofer
€399.95
Dedicated midrange driver with enhanced efficiency. Negligible force factor modulation. Ultra-low magnetic hysteresis distortion. Utilizes PURIFI’s neutral surround technology.
Available on backorder
Description
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 PTT5.25X08-NFA-01 Mid-range Woofer
The PTT5.25X08-NFA-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. Besides this 8 ohm version, there is also an 4 ohm version.
Specifications
| Article number | PTT5.25X08-NFA-01 |
| EAN | 8785256845323 |
| Nominal Diameter | 5.25” |
| Power Handling (RMS) | 250 Watts |
| Impedance (Z) | 8 Ω |
| Sensitivity (SPL at 1m / 2.83V) | 84.7 dB |
| Frequency Response | 30 – 5.000 Hz |
| Voice Coil Diameter | 39 mm |
| DC Resistance (Re) | 3.8 Ω |
| Voice Coil Inductance (Le) | 0.55 mH |
| Resonant Frequency (Fs) | 32 Hz |
| Total Q (Qts) | 0.26 |
| Diaphragm Mass Inc. Airload (Mms) | 19.6 g |
| Mechanical Compliance of Suspension (Cms) | 1.30 mm/N |
| Surface Area of Cone (Sd) | 84.9 cm² |
| BL Product (BL) | 9.0 N/A |
| Compliance Equivalent Volume (Vas) | 13 Liters |
| Maximum Linear Excursion (Xmax) | 9.8 mm |
| Driver's Mechanical Losses (Rms) | 0.59 kg/s |
| Cone / Diaphragm Material | Proprietary Fibre Mix |
| Voice Coil Wire Material | CCAW |
| Overall Outside Diameter | 147.3 mm |
| Overall Depth | 82.5 mm |
| Bolt Circle Diameter | 121.5 mm |
| # Mounting Holes | 6 |
| Mounting Hole Diameter | 4.2 mm |
| 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 |
| Article number | PTT5.25X08-NFA-01 |
| EAN | 8785256845323 |
Additional information
| Nominal Diameter | 5.25” |
|---|---|
| Power Handling (RMS) | 250 Watts |
| Impedance (Z) | 8 Ω |
| Sensitivity (SPL at 1m / 2.83V) | 84.7 dB |
| Frequency response | 30 – 5.000 Hz |
| Voice Coil Diameter | 39 mm |
| DC Resistance (Re) | 3.8 Ω |
| Voice Coil Inductance (Le) | 0.55 mH |
| Resonant Frequency (Fs) | 32 Hz |
| Total Q (Qts) | 0.26 |
| Diaphragm Mass Inc. Airload (Mms) | 19.6 g |
| Mechanical Compliance of Suspension (Cms) | 1.30 mm/N |
| Surface Area of Cone (Sd) | 84.9 cm² |
| BL Product (BL) | 9.0 N/A |
| Compliance Equivalent Volume (Vas) | 13 Liters |
| Maximum Linear Excursion (Xmax) | 9.8 mm |
| Driver's Mechanical Losses (Rms) | 0.59 kg/s |
| Cone / Diaphragm Material | Proprietary Fibre Mix |
| Voice Coil Wire Material | CCAW |
| Overall Outside Diameter | 147.3 mm |
| Overall Depth | 82.5 mm |
| Bolt Circle Diameter | 121.5 mm |
| # Mounting Holes | 6 |
| Mounting Hole Diameter | 4.2 mm |
| 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 |
Shipping & Delivery
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