Tina Turner 1939-2023



SB Acoustics SB34NRX75-16 Norex Cone High Q Woofer For Open Baffles

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High Qts woofer for open baffle designs:

The SB Acoustics SB34NRX75-16 is a 12 inch 16 ohm woofer / bass speaker featuring a Norex cone, a high power 75mm voice coil and a vented cast aluminium chassis. Norex is a proprietary paper based material comprised of wood pulp and selected natural fibres blended for an optimally strong but lightweight cone that gives extended pistonic action. This woofer is designed to be used in single or push pull open baffle arrangements to complement systems such as the Quad ESL.

Also available in 6 ohms: SB34NRX75-6 and a large motor system 8 ohm version: SB34NRXL75-8.

Key Features:

  • Designed for open baffle
  • High flow venting center pole
  • 3″ CCAW voice coil
  • Low dampening surround
  • Non-inductive voice coil former
  • Proprietary cone materials made-in-house
  • Cast Aluminium chassis

Basic parameters:

Resonant frequency (fs) 25 Hz Nominal impedance (Zn) 16 Ω
Mechanical  Q factor (Qms) 6.65
DC resistance (Re) 14.0 Ω
Electrical Q factor (Qes) 0.80
Max power handling 120 W
Total Q factor (Qts) 0.71
Sensitivity (2.83V/1m)
Equivalent volume (Vas) 205L Chassis diameter

Here's the full datasheet:

.pdf link