EU customers shop UK VAT free - all worldwide shipping is tracked!



Accuton C173-6-191E Ceramic Bass / Midrange

7 inch Ceramic Bass / Midrange driver with damped cone.

Accuton logo

The Accuton  C173-6-191E  Bass / Midrange is an esoteric 7 inch unit primarily intended for small floorstanders and bookshelf monitors.

Developed from the  C173-6-095E, this drive unit features precision cut apertures in the diaphragm which critically damp the 4kHz cone resonance resulting in a much smoother midrange performance as can be seen on the downloadable datasheet. The maximum excursion of 10mm ensures good SPLs from small cabinets.

This state of the art driver features a ceramic cone with soft rubber surround and an impressive motor system comprising a very large ferrite magnet and 38mm titanium voice coil former. The spider, pole piece and coil former are fully ventilated for minimal compression. This 6 ohm unit has a power rating of 120 watts .

Full datasheets can be downloaded from the bottom of this page.

Here are some box alignment examples:


Vb: 10L, Port diameter: 50mm, Length: 250mm, Fres: 45Hz, F-3dB: 51Hz, Q: 0.58 (optimal)

Vb: 14.5L, Port diameter: 50mm, Length: 175mm, Fres: 43.5Hz, F-3dB: 44Hz, Q: 0.50 (extended bass)

Vb: 8.5L, Port diameter: 50mm, Length: 260mm, Fres: 48Hz, F-3dB: 56Hz, Q: 0.61 (0.7dB Ripple @ 100Hz)

Infinite baffle:

Vb: 6L, -13.5dB @ 40Hz, F-3dB: 80Hz, Q: 0.71 (typical)

Vb: 19L, -10dB @ 40Hz, F-3dB: 89Hz, Q: 0.50 (extended bass)

A matching passive radiator is available : Accuton P173

Key Features:

  • Ultra hard ceramic cone (Corundum / Sapphire)
  • 173mm diameter chassis with protective grille
  • High power 38mm voice coil assembly
  • Underhung motor, titanium VC former
  • Damping apertures in diaphragm
  • Very large ferrite magnet
  • Long throw max. 10mm

Basic Parameters:

    Resonant frequency (fs) 33Hz DC resistance (Re) 5.8Ω
    Mechanical  Q factor (Qms) 5.1 Power handling 120W
    Electrical Q factor (Qes) 0.34 Sensitivity (2.83V/1m) 88dB
    Total Q factor (Qts) 0.32 Chassis diameter 173mm
    Equivalent volume (Vas) 33L Cutout diameter 146mm

    Click icons to download :

    .pdf iconData              .pdf icon3D View (large file)                                                                          

    .pdf iconDimensions

    Built to order - please contact us for a lead time.