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SB16PFCR25-4-COAX

SB Acoustics SB16PFCR25-4-COAX 6" Coaxial Speaker

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The SB Acoustics SB16PFCR-4-COAX is a 2 way coaxial loudspeaker drive unit featuring a 6" paper composite cone midwoofer with a 1" centre mounted soft dome tweeter. You will need to design a suitable crossover for this item - the drive elements are well behaved so modelling is not difficult.

The tweeter is available as a spare part:  SB14ST-C000-4 , it can be adapted to repair various other coaxial speakers that feature a 1" pole piece.

Key Features:

  • Proprietary cone material with natural fibers made in-house.
  • Soft low damping rubber surround for improved transient response.
  • Compact large surround dome tweeter.
  • Non-resonant long life lead wires
  • Optimized motor system
  • Vented reinforced polymer chassis

Basic parameters (woofer):

Resonant frequency (fs) 36 Hz Nominal impedance (Zn) 4 Ω
Mechanical  Q factor (Qms) 2.6
DC resistance (Re) 3.2 Ω
Electrical Q factor (Qes) 0.35
Max power handling 40 W
Total Q factor (Qts) 0.31
Sensitivity (2.83V/1m)
90dB
Equivalent volume (Vas) 31.3L Chassis diameter
176mm

Here's the full datasheet:

.pdf link

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