Scanspeak 18M/4631T00 18 cm Revelator midrange drive unit.
This new addition to the ground breaking Revelator series of dedicated midrange drivers features a larger 18cm sliced / glued pulp cone and a rigid titanium voice coil former. The low loss suspension and coated foam surround help this lovely unit yield a very useful sensitivity of 92 dB whilst still producing excellent midrange clarity and upper range extension. Highly recommended.
A full datasheet can be downloaded from this page.
Sliced / Damped Cone (Controls Cone Breakups)
- Die cast Aluminium Chassis vented below spider
- Patented Symmetrical Drive motor design
Rigid Titanium voice coil former
- High efficiency 92dB @ 2.83V
|Resonant frequency (fs)
||Nominal impedance (Zn)
|Mechanical Q factor (Qms)
||DC resistance (Re)
|Electrical Q factor (Qes)
||RMS power handling
|Total Q factor (Qts)
|Equivalent volume (Vas)
Here's the full datasheet: