Tectonic SDW70C30-4A
4Ω
Woofer
| Nominal size | 4x4″ / 96x96 mm |
| Resonance | 90 Hz |
| Q factor | 0.90 |
| Sensitivity | 82 dB |
| Linear excursion | ± 1.5 mm |
| Program Power | 40 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 82dB
- Frequency response 60 - 1000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 90Hz
- Mechanical quality factor QMS 4.06
- Electrical quality factor QES 1.08
- Total quality factor QTS 0.90
Large signal parameters
- Maximum linear excursion xmax 1.5mm
- Maximum excursion before damage xlim 3.3mm
- Air volume displaced at xmax VD 12cm³
- Power handling P 20W
- Program power Pmax 40W
Voice Coil
- Nominal impedance Z 4Ω
- DC resistance RE 3.3Ω
- Inductance (1kHz) LE 0.21mH
- VC Diameter 25.4mm
- Winding material Copper
Magnet
- Force factor Bl 6N/A
- Motor constant Bl/√RE 3.3N/√W
- Material Neodymium
Diaphragm
- Effective diameter 101mm
- Effective area SD 80cm²
- Moving mass MMS 20.8g
- Moving mass (without air load) MMD 20.4g
- Material PC + ABS
Suspensions
- Stiffness KMS 6.67N/mm
- Compliance CMS 150µm/N
- Equivalent volume to the compliance VAS 1.36L
- Mechanical resistance RMS 2.9N·s/m
Dimensions
- Nominal size 4 x 4″
- 96 x 96mm
- Overall size 96 x 96mm
- Overall depth 25mm
- Volume occupied by the driver 0.05L
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Export this driver to a simulation software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
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