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Purifi
PURIFI - 8" Woofer - PTT8.0X04-NAB-01
PURIFI - 8" Woofer - PTT8.0X04-NAB-01
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$1,299.95 AUD
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***CURRENTLY, ALL PURIFI DRIVERS ARE MADE TO ORDER WITH EXPECTED DELIVERY WITHIN 8-12 WEEKS***
Description:
This 8.0" is a member of the ultra low distortion extended-stroke woofer family from PURIFI. The driver incorporates the easily recognizable PURIFI NeutralSurround suspension and ultra-linear motor system PURIFI PureDrive technology working in concert to enable record-breaking linearity specifications over an extended bandwith.
Features:
- Vibroacoustic optimized cone and dust cap in black anodized aluminum
- Negligible Force Factor Modulation (FFM) and Surround Radiation Distortion (SRD)
- Ultra Low Magnetic Hysteresis Distortion (MHD)
- "Real" long-stroke performance with distortion remaining low over full excursion
- Uncompromised midrange performance
- Designed and manufactured in Denmark
Specifications:
General Specifications | |
---|---|
Type | Extended Woofer |
Size | 8in |
Nominal impedance | 4Ω |
Cone material | Black Anodized Aluminum |
Linear excursion, Xlin | ±9.3mm |
Maximum mechanical excursion, Xmax | ±15.0mm |
Motor efficiency factor, Beta | 18.3 (N/A)^2/Ω |
Efficiency Bandwidth Product, EBP | 72.2Hz |
Long term maximum power | 350W |
Rated noise power, 100h | 90W |
Electrical & Acoustical Parameter | |
---|---|
DC resistance | 3.5Ω |
Minimum impedance above resonance, Zmin | 3.8Ω |
Frequency for minimum impedance, fmin | 241Hz |
Maximum impedance, Zo | 52Ω |
Voice Coil inductance @ 1kHz 0mm, Le | 0.18mH |
SPL @ 2.83Vrms/1m, 300-800Hz | 89.3dB |
SPL @ 1W/1m, 300-800Hz | 86.1dB |
Thiele/Small Parameters | |
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Resonance frequency, fs | 26Hz |
Mechanical Q factor, Qms | 5.3 |
Electrical Q factor, Qes | 0.38 |
Total Q factor, Qts | 0.36 |
Equivalent volume, Vas | 70.4L |
Effective piston area, Sd | 235.1cm2 |
Effective piston diameter, D | 17.3cm |
Force factor, Bl | 8.0N/A |
Mechanical resistance, Rms | 1.32kg/s |
Moving mass, Mms | 43.2g |
Suspension compliance, Cms | 0.90mm/N |
Typical Box Tunings | |
---|---|
Typical corner frequency, sealed B2 alignment | 51.1Hz |
Box volume, sealed B2 alignment | 24.6L |
Typical corner frequency, bass reflex PTT alignment | 25.3Hz |
Box resonance, bass reflex PTT alignment | 27.6Hz |
Box volume, bass reflex PTT alignment | 69.0L |
Port diameter, bass reflex PTT alignment | 6.9cm |
Port length, bass reflex PTT alignment | 21.6cm |
Typical corner frequency, 2xPR PTT alignment | 29.3Hz |
Box volume, 2xPR PTT alignment | 54.7L |
PR mass per PR, 2xPR PTT alignment | 112.6g |
Voice Coil Properties | |
---|---|
Voice Coil diameter | 52mm |
Voice Coil length | 23.6mm |
Voice Coil layers | 2 |
Airgap height | 5.0mm |
Winding material | CCAW |
Physical Dimensions | |
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Basket diameter | 221mm |
Cutout diameter | 193mm |
Mounting hole pattern diameter | 210mm |
Mounting hole diameter | 5.2mm |
Magnet diameter | 140mm |
Outer flange height | 5.0mm |
Build-in depth | 102.0mm |
Weight | 3.50kg |
Internal volume displacement | 0.64L |
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