C90-6-079
The C90-6-079 is a midrange drive unit featuring an ultra hard ceramic (Sapphire) 90mm diaphragm in a 130mm square chassis. This unit is based on the C90-6-078 and features a revised suspension / inverted fabric surround with ferrofluid cooling of the voicecoil ; this results in a smoother low end response and slightly lower efficiency.
The diaphragm profile is quite shallow and essentially is best viewed as a large inverted dome with the dispersion advantages of such. Precision cut apertures provide critical damping of the 8 kHz resonance.
An FEA optimized overhung motor design with 38 mm Aluminium voice coil former guarantees low energy storage and excellent heat transfer.
We recommend an application from 250 Hz – 5000 Hz.
Full datasheets can be downloaded from below.
| Resonant frequency (fs) | 105Hz | DC resistance (Re) | 5.9Ω |
| Mechanical Q factor (Qms) | 0.9 | Power handling | 120W |
| Electrical Q factor (Qes) | 1.52 | Sensitivity (2.83V/1m) | 87.5dB |
| Total Q factor (Qts) | 0.57 | Chassis diameter/square | 130mm |
| Equivalent volume (Vas) | 3.2L | Cutout diameter/square | 111mm |
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Data 
3D View (large file)
Dimensions