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

Model SB12PACR25-4-COAX

Condition New

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

Special Features

Woofer specifications:

Nominal Impedance	4 Ω	Free air resonance, Fs	55 Hz
DC resistance, Re	3.1 Ω	Sensitivity (2.83V/1m)	87.5 dB
Voice coil inductance, Le	0.24 mH	Mechanical Q-factor, Qms	4.84
Effective piston area, Sd	45cm ²	Electrical Q-factor, Qes	0.38
Voice coil diameter	25.4 mm	Total Q-factor, Qts	0.35
Voice coil height	15 mm	Moving mass incl. air, Mms	5.6 g
Air gap height	5 mm	Force factor, Bl	4.0 Tm
Linear coil travel (p-p)	10 mm	Equivalent volume, Vas	4.3 liters
Magnetic flux density	1.03 T	Compliance, Cms	1.49 mm/N
Magnet weight	0.40 kg	Mechanical loss, Rms	0.4 kg/s
Net weight	0.86 kg	Rated power handling*	30 W
* IEC 268-5, T/S parameters measured on drive units that are broken in.

Tweeter specifications:

Nominal Impedance	4 Ω
DC resistance, Re	3.0 Ω
Voice coil diameter	12.4 mm
Voice coil height	1.2 mm
Air gap height	1.5 mm
Free air resonance, Fs	1300 Hz
Sensitivity (2.83V/1m)	87.5 dB
Rated power handling*	10 W
Magnetic flux density	0.97 T
Magnet weight	0.003 kg
Net weight	0.014 kg
* IEC 268-5, high-pass Butterworth, 3 kHz, 12 dB/oct.

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