Scanspeak 28W/4878T00 Subwoofer - Revelator Range

28W/4878T00

Scanspeak 28W/4878T00 Revelator Subwoofer with sandwich cone.

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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.

Key Features:

  • 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

Basic parameters:

Resonant frequency (fs) 18 Hz Nominal impedance (Zn) 4 Ω
Mechanical  Q factor (Qms) 5.6 DC resistance (Re) 3.1 Ω
Electrical Q factor (Qes) 0.32 RMS power handling 200 W
Total Q factor (Qts) 0.30 Sensitivity (2.83V/1m) 88.2 dB
Equivalent volume (Vas) 127L Chassis diameter 280 mm

Here's the full datasheet:

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