4″ SB12PAC25-4 / Aluminum
Features
- Vented reinforced plastic chassis
- Anodised aluminium cone
- Low damping rubber surround
- Large vented motor system
- Long stroke linear suspension
- Light weight CCAW voice coil
- Non-conducting fibreglass coil former
- Non-resonant long life lead wires
Additional information
Nominal Impedance | 4 Ω |
---|---|
DC resistance | Re 3.1 Ω |
Voice coil inductance | Le 0.25 mH |
Effective piston area | Sd 50 cm2 |
Voice coil diameter | 25.4 mm |
Voice coil height | 15 mm |
Air gap height | 5 mm |
Linear coil travel (p-p) | 10 mm |
Magnetic flux density | 1.03 T |
Magnet weight | 0.40 kg |
Net Weight | 0.86 kg |
Free air resonance | Fs 52.5 Hz |
Sensitivity | (2.83 V / 1 m) 87 dB |
Mechanical Q-factor | Qms 5.0 |
Electrical Q-factor | Qes 0.33 |
Total Q-factor | Qts 0.31 |
Moving mass incl. air | Mms 6.1 g |
Force factor | Bl 4.35 Tm |
Equivalent volume | VAS 5.3 liters |
Compliance | Cms 1.50 mm/N |
Mechanical loss | Rms 0.4 kg/s |
Rated power handling | * 30 W |
Note | * IEC 268-5, T/S parameters measured on drive units that are broken in. |
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