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SB23MFCL45-4

SB Acoustics SB23MFCL45-4 Polypropylene Subwoofer

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The SB Acoustics SB23MFCL45-4 is an 8 inch 4 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 8 ohms: SB23MFCL45-8

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) 27 Hz Nominal impedance (Zn) 4 Ω
Mechanical  Q factor (Qms) 7.7
DC resistance (Re) 3.3 Ω
Electrical Q factor (Qes) 0.36
Max power handling 150W
Total Q factor (Qts) 0.34
Sensitivity (2.83V/1m)
87.5dB
Equivalent volume (Vas) 37L Chassis diameter
234mm

Here's the full datasheet:

.pdf link

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