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Accuton P173 Passive Radiator

7 inch Aluminium mass adjustable passive radiator.

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The Accuton P173 is an adjustable high end passive radiator and is an ideal partner for the C173 range of drive units. Features include an aluminium cone, rigid multi branch chassis and large maximum excursion of ± 5mm.

Adjustable mass tuning is accomplished by adding / removing stainless steel weight discs giving a possible resonance range of between 20Hz - 70Hz.

The stated nominal resonance frequency of the passive radiator is taken at 3mm excursion to give a realistic value.

Here's a formula to calculate the resonant frequency :

Fres= sqrt[1/(Cms corr.) x Mms x 4 pi^2)]  with  Cms corr.= 1/[(1/Cms) + 1/((Vb/Vas) x Cms)]  ... phew! :0)

Key Features:

  • Rigid aluminium alloy diaphragm
  • 173mm multi branch chassis with protective grille
  • Mass adjustable for optimised tuning
  • Long throw max. 10mm

Basic Parameters:

    Resonant frequency (fs) 41Hz DC resistance (Re) -
    Mechanical  Q factor (Qms) - Power handling -
    Electrical Q factor (Qes) - Sensitivity (2.83V/1m) -
    Total Q factor (Qts) - Chassis diameter 173mm
    Equivalent volume (Vas) 24L Cutout diameter 146mm

    Click icons to download :

    .pdf iconData              .pdf iconDimensions   

      .pdf icon 3D View - large file                                        

    Built to order - contact us for a lead time.