Accuton C90-6-078 Ceramic Dome

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The  C90-6-078 is a 5 inch midrange driver with ultra hard ceramic dome. Anti-resonant cutout fills in the ceramic dome provide for damping of the 8 kHz dome resonance. A FEA optimized  overhung motor design with 38 mm aluminium voice coil former guarantees low energy storage and excellent heat transfer. The low loss fabric surround and a  thin fabric spider center the moving parts with high linearity. As a typical home stereo midrange driver, we recommend our C90-6-078 for an application from 200 Hz - 5000 Hz.

Short data

Usage as Midrange
Power Handling 120 Watt
Impedance 6 Ohm
Frequency from 200 Hz
Max. Frequency 5 kHz
Sound pressure 88 dB


Overall dimensions 130x130 mm
Baffle cutout 111x111 mm
Depth (Total) 64.5 mm
Front material Aluminium
Membrane Type Invers dome
Membrane Material Ceramic
Voice coil Ø 38 mm
Voice coil material Aluminium
Magnet Ø 102 mm
Magnet-height 32 mm


Resonance fs fs: 100 Hz
Mechanical Q Qms: 2.4
Electrical Q Qes: 1.52
Total Q Qts: 0.92
Equivalent Air-Volumen Vas: 3.9 Liter
DC-Resistance Re: 6.4 Ohm
Coil Inductance Le: 0.18 mH
Mech. Compliance Cms: 0.36 mm/N
Moving Mass Mms: 6.96 g
mech. Resistance Rms: 1.86 kg/s-¹
Max. Excursion +/- Xmax: 3 mm
BL Product Bl: 4.3 N/A
Membrane Area Sd: 86 cm²
Sound pressure dB: 88 SPL


Harmonic Distortion


Techanical Dimensions

PDF-Product information

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

If you observe any problem while using the product, you have the possibility to contact our friendly service team.

You can also easily manage your guarantee concern – without being obliged to – under the section My Account.

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.