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PURIFI PTT6.5M04-NFA-01 Ultra Low Distortion Midrange
Dedicated midrange driver with enhanced efficiency. Negligible force factor modulation. Ultra-low magnetic hysteresis distortion. Utilizes PURIFI’s neutral surround technology.
- Impedance (Z)
- 4 ohms
- Power Handling (RMS)
- 250 Watts
- Resonant Frequency (Fs)
- 55 Hz
€429.95
8 in stock
Delivery options and total cost confirmed at checkout.
Ask us to check connections, dimensions and compatibility before you order.
Get compatibility adviceProduct Details
The PTT6.5M04-NFA-01 has been optimized for Midrange use and achieves higher sensitivity as compared to the X- and W- versions of PTT6.5 product family. Furthermore, the M-version has a slight redesign chassis. Please observe the 2D drawings in the datasheet. The driver achieves astounding performance with ultra-clean distortion specifications.
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. Thanks to this understanding the PTT6.5W08-NFA-01 is the most refined bass-mid woofer from our woofer category.
Besides this 4 ohm version, there is also an 8 ohm version, a long stroke version (PTT6.5M08-NFA-01), and a 6,5″ passive radiator available.
Specifications
| Article number | PTT6.5M04-NFA-01 |
| EAN | 8785256844562 |
| Nominal Diameter | 6.5" |
| Power Handling (RMS) | 250 Watts |
| Impedance (Z) | 4 Ohms |
| Sensitivity (SPL at 1m / 2.83V) | 93.2 dB |
| DC Resistance (Re) | 3.9 Ω |
| Voice Coil Inductance (Le) | 0.26 mH |
| Resonant Frequency (Fs) | 55 Hz |
| Mechanical Q (Qms) | 4.2 |
| Electromagnetic Q (Qes) | 0.36 |
| Total Q (Qts) | 0.33 |
| Diaphragm Mass Inc. Airload (Mms) | 17.8 g |
| Mechanical Compliance of Suspension (Cms) | 0.47 mm/N |
| Surface Area of Cone (Sd) | 132.7 cm2 |
| BL Product (BL) | 8.1 N/A |
| Compliance Equivalent Volume (Vas) | 11.7 L |
| Maximum Linear Excursion (Xmax) | 3.9 mm |
| Driver's Mechanical Losses (Rms) | 1.47 kg/s |
| Cone / Diaphragm Material | Proprietary Fibre Mix |
| 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 | PTT6.5M04-NFA-01 |
| EAN | 8785256844562 |
| Nominal Diameter | 6.5″ |
|---|---|
| Power Handling (RMS) | 250 Watts |
| Impedance (Z) | 4 ohms |
| Sensitivity (SPL at 1m / 2.83V) | 93.2 dB |
| DC Resistance (Re) | 3.9 Ω |
| Voice Coil Inductance (Le) | 0.26 mH |
| Resonant Frequency (Fs) | 55 Hz |
| Mechanical Q (Qms) | 4.2 |
| Electromagnetic Q (Qes) | 0.36 |
| Total Q (Qts) | 0.33 |
| Diaphragm Mass Inc. Airload (Mms) | 17.8 g |
| Mechanical Compliance of Suspension (Cms) | 0.47 mm/N |
| Surface Area of Cone (Sd) | 132.7 cm² |
| BL Product (BL) | 8.1 N/A |
| Compliance Equivalent Volume (Vas) | 11.7 L |
| Maximum Linear Excursion (Xmax) | 3.9 mm |
| Driver's Mechanical Losses (Rms) | 1.47 kg/s |
| Cone / Diaphragm Material | Proprietary Fibre Mix |
| 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 |
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