Tang Band W4-1337SDF
SD
SDF
Full-range
Nominal diameter | 4″ / 102 mm |
Resonance | 70 Hz |
Q factor | 0.34 |
Sensitivity | 89.6 dB |
Linear excursion | ± 2.5 mm |
Program Power | 50 W |
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- Sensitivity (1W, 1m, infinite baffle) SPL1W 89.6dB
- Frequency response 70 - 20000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 70Hz
- Mechanical quality factor QMS 2.04
- Electrical quality factor QES 0.40
- Total quality factor QTS 0.34
Large signal parameters
- Maximum linear excursion xmax 2.5mm
- Air volume displaced at xmax VD 14cm³
- Power handling P 25W
- Program power Pmax 50W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 6.3Ω
- Inductance (1kHz) LE 0.027mH
- VC Diameter 25.4mm
Magnet
- Force factor Bl 5.32N/A
- Motor constant Bl/√RE 2.12N/√W
- Air gap height HAG 10mm
- Material Ferrite
Diaphragm
- Effective diameter 85mm
- Effective area SD 57cm²
- Moving mass MMS 3.99g
- Moving mass (without air load) MMD 3.7g
- Material Titanium
Suspensions
- Stiffness KMS 0.822N/mm
- Compliance CMS 1216µm/N
- Equivalent volume to the compliance VAS 5.61L
- Mechanical resistance RMS 0.86N·s/m
- Surround material Rubber
Dimensions
- Nominal diameter 4″
- 102mm
- Volume occupied by the driver (estimated) 0.74L
- Net weight 1.803kg
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