SB Acoustics 4" mid/woofer, 25mm VC, Coaxial PAC, SB12PACR25-4-COAX Round basket

SB12PACR25-4-COAX

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SB Acoustics 4" mid/woofer, 25mm VC, Coaxial PAC, SB12PACR25-4-COAX Round basket

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51,00 €

51,00 € tax excl.***

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SB Acoustics 4" mid/woofer, 25mm VC, Coaxial PAC, SB12PACR25-4-COAX Round basket

Special Features

  • Vented reinforced plastic chassis
  • Anodised aluminium cone
  • Soft low damping rubber surround for improved transient response
  • Large motor system
  • Long stroke linear suspension
  • Light weight CCAW voice coil
  • Non-conducting fibreglass coil former
  • Non-resonant long life lead wires
  • Compact large surround dome tweeter

Woofer specifications:

Nominal Impedance4 ΩFree air resonance, Fs55 Hz
DC resistance, Re3.1 ΩSensitivity (2.83V/1m)87.5 dB
Voice coil inductance, Le0.24 mHMechanical Q-factor, Qms4.84
Effective piston area, Sd45cm 2Electrical Q-factor, Qes0.38
Voice coil diameter25.4 mmTotal Q-factor, Qts0.35
Voice coil height15 mmMoving mass incl. air, Mms5.6 g
Air gap height5 mmForce factor, Bl4.0 Tm
Linear coil travel (p-p)10 mmEquivalent volume, Vas4.3 liters
Magnetic flux density1.03 TCompliance, Cms1.49 mm/N
Magnet weight0.40 kgMechanical loss, Rms0.4 kg/s
Net weight0.86 kgRated power handling*30 W
* IEC 268-5, T/S parameters measured on drive units that are broken in.

Tweeter specifications:

Nominal Impedance4 Ω
DC resistance, Re3.0 Ω
Voice coil diameter12.4 mm
Voice coil height1.2 mm
Air gap height1.5 mm
Free air resonance, Fs1300 Hz
Sensitivity (2.83V/1m)87.5 dB
Rated power handling*10 W
Magnetic flux density0.97 T
Magnet weight0.003 kg
Net weight0.014 kg
* IEC 268-5, high-pass Butterworth, 3 kHz, 12 dB/oct.

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SB Acoustics 4" mid/woofer, 25mm VC, Coaxial PAC, SB12PACR25-4-COAX Round basket

SB Acoustics 4" mid/woofer, 25mm VC, Coaxial PAC, SB12PACR25-4-COAX Round basket

SB Acoustics 4" mid/woofer, 25mm VC, Coaxial PAC, SB12PACR25-4-COAX Round basket