STX M.12.140.8.WMC
8Ω
Mid-range
| Nominal diameter | 4.5″ / 120 mm |
| Resonance | 95 Hz |
| Q factor | 0.88 |
| Sensitivity | 84.9 dB |
| Linear excursion | ± 1.5 mm |
| Program power | 140 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 84.9dB
- Frequency response 100 - 15000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 95Hz
- Mechanical quality factor QMS 2.89
- Electrical quality factor QES 1.26
- Total quality factor QTS 0.88
Large signal parameters
- Maximum linear excursion (one way) xmax 1.5mm
- Maximum excursion before damage xlim 7.5mm
- Air volume displaced at xmax VD 8.6cm³
- Power handling P 70W
- Program power Pmax 140W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 5.0Ω
- Inductance (1kHz) LE 0.22mH
- VC Diameter 25mm
- Winding material Copper
- Former material Aluminium
Magnet
- Force factor Bl 3.4N/A
- Motor constant Bl/√RE 1.52N/√W
- Material Ferrite
Diaphragm
- Effective diameter 85mm
- Effective area SD 57cm²
- Moving mass (including air load) MMS 4.9g
- Moving mass MMD 4.6g
- Material Modified white cellulose
Suspensions
- Stiffness KMS 1.79N/mm
- Compliance CMS 560µm/N
- Equivalent volume to the compliance VAS 2.5L
- Mechanical resistance RMS 1.01N·s/m
Dimensions
- Nominal diameter 4.5″
- 120mm
- Overall diameter 121mm
- Baffle cutout diameter 98mm
- Overall depth 68mm
- Volume occupied by the driver (estimated) 0.22L
- Net weight 0.7kg
- Frame material Plastic
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Export this driver to a box design software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
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