Tectonic SDW75C-4A
4Ω
Woofer
| Nominal size | 4x4″ / 106x106 mm |
| Resonance | 70 Hz |
| Q factor | 0.82 |
| Sensitivity | 81 dB |
| Linear excursion | ± 3 mm |
| Program Power | 60 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 81dB
- Frequency response 50 - 1000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 70Hz
- Mechanical quality factor QMS 5.52
- Electrical quality factor QES 0.98
- Total quality factor QTS 0.82
Large signal parameters
- Maximum linear excursion xmax 3mm
- Maximum excursion before damage xlim 4.9mm
- Air volume displaced at xmax VD 27cm³
- Power handling P 30W
- Program power Pmax 60W
Voice Coil
- Nominal impedance Z 4Ω
- DC resistance RE 3.3Ω
- Inductance (1kHz) LE 0.3mH
- VC Diameter 31.8mm
- Winding material Copper
Magnet
- Force factor Bl 6.45N/A
- Motor constant Bl/√RE 3.55N/√W
- Material Neodymium
Diaphragm
- Effective diameter 107mm
- Effective area SD 90cm²
- Moving mass MMS 28g
- Moving mass (without air load) MMD 27.5g
- Material PC + ABS
Suspensions
- Stiffness KMS 5.26N/mm
- Compliance CMS 190µm/N
- Equivalent volume to the compliance VAS 2.18L
- Mechanical resistance RMS 2.2N·s/m
Dimensions
- Nominal size 4 x 4″
- 106 x 106mm
- Overall size 106 x 106mm
- Overall depth 42mm
- Volume occupied by the driver 0.1L
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Export this driver to a simulation software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
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