Accuton C173-6-090 Ceramic Membrane, Neodym

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The C173-6-090 is a 6.5 inch midrange driver with ultra hard ceramic dome. Anti-resonant cutout fills in the ceramic dome provide for damping of the 6 kHz dome resonance. A FEA optimized underhung motor design with 55 mm titanium voice coil former guarantees very low energy storage and good heat transfer. Its high force factor leads to outstanding transient response for more realistic reproduction. The low loss fabric surround and a thin fabric spider center the moving parts with high linearity. For this amazing midrange driver, we recommend an application from 80 Hz - 3200 Hz.

  • 7 inch midrange with tissue suround with high efficiency  for 3 way designs
  • large sized voice coil with 55mm titanium voice coil former for high midrange resolution 
  • big, underhung 120mm Neodymium magnet system for very low distortion
  • Anti-resonant cutout fills in the ceramic dome provide high damping of the 5 kHz dome resonance

Closed Box design parameters:
  • Vb: 2L, -13dB @ 80Hz, F-3dB: 160Hz, Q: 0.71 (typical)
  • Vb: 4.5L, -10dB @ 80Hz, F-3dB: 170Hz, Q: 0.50 (clean transient response)

Short data

Usage as Midrange
Power Handling 120 Watt
Impedance 6 Ohm
Frequency from 80 Hz
Max. Frequency 3.2 kHz
Sound pressure 93 dB


Overall dimensions 173 mm
Baffle cutout 145.6 mm
Depth (Total) 96.35 mm
Front material -
Frame Material Aluminium diecast
Membrane Type Cone
Membrane Material Ceramic
Voice coil Ø 55 mm
Voice coil material Titanium


Resonance fs fs: 57 Hz
Mechanical Q Qms: 3.75
Electrical Q Qes: 0.26
Total Q Qts: 0.26
Equivalent Air-Volumen Vas: 15.5 Liter
DC-Resistance Re: 6.61 Ohm
Coil Inductance Le: 0.19 mH
Mech. Compliance Cms: 0.56 mm/N
Moving Mass Mms: 14 g
mech. Resistance Rms: 1.32 kg/s-¹
Max. Excursion +/- Xmax: 5 mm
BL Product Bl: 11.6 N/A
Membrane Area Sd: 133 cm²
Sound pressure dB: 93 SPL


Harmonic Distortion


Technical Dimensions

PDF-Product information

You receive a 2 year warranty from the date of purchase for all of our high quality hifi-products.

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Warranty extention on Accuton products

You have the possibility to extend the warranty on Tannoy ceramic and diamond speakers for free amounting to 3 years from the purchase date.