P173

Passive Radiator-Passive Radiator

Dome material	Passive Radiator
Application	Passive Radiator
Overall diameter	173 MM
Cutout Diameter	145.6 MM
Overall depth	62 MM
Motor assembly depth	-- MM
Motor assembly diameter	-- 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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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)]

Mechanical Data

Specification	Value	Unit
Overall diameter	173	mm
Cutout diameter	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