EASTECH ASDFD2000-0400
4Ω
Full-range
| Nominal size | 2x4″ / 45x100 mm |
| Resonance | 180 Hz |
| Q factor | 1.20 |
| Sensitivity | 84.5 dB |
| Linear excursion | ± 1.8 mm |
| Program Power | 40 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 84.5dB
Thiele & Small parameters
- Resonance frequency (free air) fS 180Hz
- Mechanical quality factor QMS 3.50
- Electrical quality factor QES 1.80
- Total quality factor QTS 1.20
Large signal parameters
- Maximum linear excursion xmax 1.8mm
- Air volume displaced at xmax VD 4.5cm³
- Power handling P 20W
- Program power Pmax 40W
Voice Coil
- Nominal impedance Z 4Ω
- DC resistance RE 3.4Ω
- Inductance (1kHz) LE 0.04mH
- VC Diameter 18.4mm
- Winding height HVC 6.5mm
- Winding material PESVW
- Former material Kapton
Magnet
- Force factor Bl 2.2N/A
- Motor constant Bl/√RE 1.19N/√W
- Air gap height HAG 3mm
- Material Ferrite
Diaphragm
- Effective diameter 57mm
- Effective area SD 25.9cm²
- Moving mass MMS 2.4g
- Moving mass (without air load) MMD 2.4g
- Material Paper
Suspensions
- Stiffness KMS 3.33N/mm
- Compliance CMS 300µm/N
- Equivalent volume to the compliance VAS 1L
- Mechanical resistance RMS 0.7N·s/m
- Surround material Cloth
Dimensions
- Nominal size 2 x 4″
- 45 x 100mm
- Net weight 0.26kg
- Frame material Steel
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