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SB Acoustics Satori MW19TX-4 Midwoofer

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The Satori MW19TX-4 by SB Acoustics is a high performance 7.5 inch 4 ohm midwoofer featuring a state of the art TeXtreme® biaxially oriented thin ply carbon fibre cone; this new ultra lightweight but highly rigid material offers new levels of transparency and detail. Very high efficiency.

Also available in 8 ohms: MW19TX-8.

Key Features:

  • Advanced TeXtreme® cone.
  • Vented aerodynamic cast aluminium chassis.
  • Soft low damping rubber surround.
  • Advanced BIMAX spider.
  • Powerful optimised low distortion neodymium motor system.
  • Extended copper sleeve on pole piece.
  • Non-conducting fiberglass voice coil former.
  • Vented pole piece and voice coil.
  • Light weight CCAW voice coil.
  • Long life silver lead wires.

Basic parameters:

Resonant frequency (fs) 32 Hz Nominal impedance (Zn) 4 Ω
Mechanical  Q factor (Qms) 5.43
DC resistance (Re) 3.4 Ω
Electrical Q factor (Qes) 0.28
Max power handling 70 W
Total Q factor (Qts) 0.27
Sensitivity (2.83V/1m)
Equivalent volume (Vas) 53.2L Chassis diameter

Here's the full datasheet:

.pdf link