SB Acoustics SB15NRX2C30-4
4Ω
8ΩMid Bass
Nominal diameter | 5″ / 127 mm |
Resonance | 34.5 Hz |
Q factor | 0.28 |
Sensitivity | 86.1 dB |
Linear excursion | ± 5 mm |
Program Power | 100 W |
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- Sensitivity (1W, 1m, infinite baffle) SPL1W 86.1dB
Thiele & Small parameters
- Resonance frequency (free air) fS 34.5Hz
- Mechanical quality factor QMS 3.58
- Electrical quality factor QES 0.30
- Total quality factor QTS 0.28
Large signal parameters
- Maximum linear excursion xmax 5mm
- Air volume displaced at xmax VD 41cm³
- Power handling P 50W
- Program power Pmax 100W
Voice Coil
- Nominal impedance Z 4Ω
- DC resistance RE 3.1Ω
- Inductance (1kHz) LE 0.12mH
- VC Diameter 30.5mm
- Winding height HVC 15mm
- Winding material Copper Clad Aluminium
- Former material Glass Fiber
Magnet
- Flux density B 1T
- Force factor Bl 4.7N/A
- Motor constant Bl/√RE 2.67N/√W
- Air gap height HAG 5mm
- Weight 0.54kg
Diaphragm
- Effective diameter 102mm
- Effective area SD 82cm²
- Moving mass MMS 9.9g
- Moving mass (without air load) MMD 9.4g
- Material Natural fibers (made in-house)
Suspensions
- Stiffness KMS 0.465N/mm
- Compliance CMS 2150µm/N
- Equivalent volume to the compliance VAS 20.5L
- Mechanical resistance RMS 0.5N·s/m
- Surround material Rubber
Dimensions
- Nominal diameter 5″
- 127mm
- Volume occupied by the driver (estimated) 0.59L
- Net weight 1.46kg
- Frame material Cast aluminium
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