Scanspeak 18W/4531G00 Revelator 18cm 4 ohm midwoofer with sliced, undoped pulp cone.
The Revelator 18W series of drivers continue the enviable trend set by the smaller 15W range. There's a few different versions - they are all excellent.
This drive unit is available in 4 and 8 Ohm impedance.
Popular among high end & esoteric designers - and with very good reason.
Featuring unique sliced / damped cone technology & huge high efficiency ferrite magnets, these no compromise drive units offer superlative sound quality with outstanding midrange resolution and extension.
- Patented Symmetrical Drive motor design
- Die cast Aluminium Chassis vented below spider
- Low-loss linear suspension
- Sliced / Damped Cone (Controls Cone Breakups)
- Low Damping SBR Rubber Surround
- Undoped pulp cone
This woofer is 4 Ohms ; the 8 Ohm version is here : 18W/8531G00
|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: