Scanspeak 28W/4878T00 Revelator Subwoofer with sandwich cone.
An extremely powerful 11 inch / 28cm subwoofer featuring a large 3” voice coil, a huge maximum excursion of 52mm and a low resonance frequency of just 18 Hz ; it reproduces the deepest, loudest bass frequencies with ease and accuracy.
The patented foam filled paper-sandwich cone has a very high stiffness to weight ratio.
Copper Faraday sleeves control eddy currents within the motor. Rugged heavy duty alloy chassis.
Paper sandwich cone with Patented foam filling
3” Voice coil wound on Titanium former
Rugged die cast aluminium chassis
Huge maximum excursion (+/-26 mm)
Spider with balanced tinsel leads
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:
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