SB Acoustics SB12MNRX2-25-4
4Ω
Mid-range
| Nominal diameter | 4″ / 102 mm |
| Resonance | 63.5 Hz |
| Q factor | 0.32 |
| Sensitivity | 87.6 dB |
| Linear excursion | ± 2.2 mm |
| Program Power | 100 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 87.6dB
Thiele & Small parameters
- Resonance frequency (free air) fS 63.5Hz
- Mechanical quality factor QMS 4.19
- Electrical quality factor QES 0.35
- Total quality factor QTS 0.32
Large signal parameters
- Maximum linear excursion xmax 2.2mm
- Air volume displaced at xmax VD 11cm³
- Power handling P 50W
- Program power Pmax 100W
Voice Coil
- Nominal impedance Z 4Ω
- DC resistance RE 3.2Ω
- Inductance (1kHz) LE 0.15mH
- VC Diameter 25.4mm
- Winding height HVC 9.4mm
- Winding material Copper Clad Aluminium
- Former material Glass Fiber
Magnet
- Flux density B 1.03T
- Force factor Bl 3.9N/A
- Motor constant Bl/√RE 2.18N/√W
- Air gap height HAG 5mm
- Weight 0.4kg
Diaphragm
- Effective diameter 80mm
- Effective area SD 50cm²
- Moving mass MMS 4.2g
- Moving mass (without air load) MMD 3.9g
- Material Norex
Suspensions
- Stiffness KMS 0.667N/mm
- Compliance CMS 1500µm/N
- Equivalent volume to the compliance VAS 5.3L
- Mechanical resistance RMS 0.4N·s/m
- Surround material Butyl rubber
Dimensions
- Nominal diameter 4″
- 102mm
- Volume occupied by the driver (estimated) 0.36L
- Net weight 0.92kg
- Frame material Cast aluminium
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Export this driver to a simulation software:
Closed Box Simulator·
Speakerbench
WinISD
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Hornresp
QSpeakers
SpeakerSim
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