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P173 Passive Radiator-Passive Radiator 

The P173 ist a 6,5 inch Passive Radiator with an Aluminium Sandwich Dome. Extra mass can easily be added to tune the resonance frequency. A simple but robust screw mount provides fixing of stainless steel discs in the desired quantity.
The values of Vas and Cms allow for extensive tuning and various box sizes.

The stated resonance frequency of the passive radiator is taken at 3mm excursion, offering a realistic value.

It can be calculated as follows:
Fres= sqrt[1/(Cms corr.) x Mms x 4 pi^2)]  with  Cms corr.= 1/[(1/Cms) + 1/((Vb/Vas) x Cms)]

P173_DimWeb-Draht.png

Dome material  Passive Radiator
Application      Passive Radiator
Overall diameter  173 MM
Cutout Diameter/Square      145.6 MM
Overall depth 62 MM
Motor assembly depth  0 mm
Motor assembly diameter      0 mm
   

Main Features

Robust Extra Mass & Screw Mount
Soft Rubber Surround
Low loss Spider and Surround
Resonance Tuning
20 HZ - 70 HZ 

TECHNOLOGY
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Mechanical Data

Specification    Value Unit
Overall diameter    173 mm
Cutout Diameter/Square   145.6 mm
Min. frontplate thickness    6.35 mm
Overall depth          62 mm
Motor assembly depth         0 mm
Motor assembly diameter    0 mm
Screwfitting        DIN 7984 / 4mm mm
Terminal    0 mm
Shipping weight (pair)    6.3 Kg
Shipping box size (pair)   210/280/210 mm
   

Thiele/Small Parameters

Specification   Value Unit
Sensitivity (2.83V / 1m) Spl 0 dB
DC-resistance  Re 0 Ohm
Resonance frequency  Fs 41 Hz
Equivalent volume of air  Vas 24 ltr
Mechanical Q  Qms 0  
Electrical Q  Qes 0  
Total Q      Qts 0  
Effective piston area  Sd 130 Cm2
Moving mass      Mms 15 g
Suspension compliance      CMs 1.01 mm/n
Mechanical resistance      Rms 0 Kg*s
   

Voice Coil Parameters

Specification    Value Unit
Power handling  P 0 W
Linear excursion  Xmax 10 mm
Voice coil diameter        0 mm
Voice coil former material    0  
Voice coil material   0  
Voice coil inductance      Le 0 mH
Force factor      Bl 0 N/A
Motor type    0  
Ferrofluid filling    No  
   

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