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SB Acoustics SB23MFCL45-8 Polypropylene Subwoofer

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The SB23MFCL45-8 from SB Acoustics is an 8 inch 8 ohm subwoofer featuring a mineral loaded polypropylene cone and a vented cast aluminium chassis. Long throw design specifically optimised for small enclosures.

Also available in 4 ohms: SB23MFCL45-4

Key Features:

  • Long stroke design.
  • Linear high stability suspension.
  • Low damping rubber surround.
  • Long copper voice coil.
  • Non-conducting reinforced fibre glass coil former.
  • Very stiff mineral filled Polypropylene cone.
  • Vented cast aluminium chassis.
  • Large vented motor system.
  • Long life silver lead wires.
  • Optimised for smaller enclosures.

Basic parameters:

Resonant frequency (fs) 28.5 Hz Nominal impedance (Zn) 8 Ω
Mechanical  Q factor (Qms) 7.3
DC resistance (Re) 6.2 Ω
Electrical Q factor (Qes) 0.46
Max power handling 150W
Total Q factor (Qts) 0.43
Sensitivity (2.83V/1m)
85dB
Equivalent volume (Vas) 37L Chassis diameter
234mm

Here's the full datasheet:

.pdf link

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