Dynaudio Esotec - Technical Specifications Woofer MW 172
| Thiele Small Parameters | ||
| Nominal impedance | Znom | 4 Ω |
| DC resistance | Re | 3.2 Ω |
| Voice coil inductance | Le | 0.27 mH |
| Resonance frequency | fs | 45 Hz |
| Mechanical Q factor | Qms | 2.3 |
| Electrical Q factor | Qes | 0.65 |
| Total Q factor | Qts | 0.51 |
| Mechanical resistance | Rms | 2.6 kg/s |
| Moving mass (incl. air load) | Mms | 21.4 g |
| Suspension compliance | Cms | 0.58 mm/N |
| Effective cone diameter | d | 151 mm |
| Effective piston area | Sd | 180 cm² |
| Equivalent volume | Vas | 27 l |
| Force factor | Bl | 5.4 Tm |
| Recommended frequency range | 35 - 3500 Hz |
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| Magnet and Voice Coil Properties | ||
| Voice coil diameter | dc | 75 mm |
| Voice coil height | hc | 14 mm |
| Linear excursion, peak to peak | 9 mm | |
| Max. excursion, peak to peak | 15 mm | |
| Power Handling | ||
| Nominal long term IEC (Depending on crossover) | 150 W | |
| Transient (10 ms) | 1000 W |
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| Mechanical Properties | ||
| Net weight | 1.3 kg | |
| Overall dimension | ø 200 x 88 mm | |
Typical impedance correction for MW 172 |
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SPL Red line: on-axis response Green line: 30º horizontal Blue line: 60º horizontal Measurement conditions: Level: 2.83 V Distance: 1 m Box volume: 18 l |
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Impedance Red line: impedance, free air Green line: impedance, free air with compensation. Measurement conditions: Level: 3.16 V, 50 ohm Driver in free air |
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Facts Diaphragm and dust cap moulded as one piece Very large 75 mm voice coil ensures high power handling Internal double magnet system with vented pole piece Aluminium voice coil wire provides for a low moving mass Rigid die-cast chassis with aerodynamically shaped ribs Materials and parameters are optimized for the harsh environmental conditions in a car Natural midrange reproduction Smooth high-frequency roll-off |
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Dynaudio International GmbH, Ohepark 2, 21224 Rosengarten, Germany, Phone: +49 (0) 4108 - 4180 - 0, Email: info@dynaudio.com
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