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| 400 GMF Pro Bass drive unit. |
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This loudspeaker of low register with high efficiency (98.5 dB) is intended for wiring for sound.
Its engine made up of a ferrite of 220 mm makes it possible to obtain the field necessary to reach such a sensitivity. These qualities enable him to be directly coupled with our 1 inch horn. Installed in a bassreflex, crossed to 1200 Hz, with a filtering with 18 dB/oct for the horn and 12 dB/oct for the 400, the response curve will be linear with ± 2 dB until the final frequency of the 1 inch driver. |
Mesurements curves |
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400 GMF Pro Specifications |
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Efficiency 1 W/1m at Fs |
98 dB | Fs | 32 Hz |
| Frequency response | 8 ohms | Re | 6.5 ohms |
| Impedance | 32 à 4kHz | Qts | 0.26 |
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Power max. RMS |
120 W | Qe | 0.27 |
| Weight | 10.7 kg | Qm | 9.5 |
| Suspension | Toile | Vas | 370 |
| Linear excursion | 10 mm | Bl | 18 |
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Magnet diameter |
220 mm | Cms |
0.36 |
| Magnetic field | 1.8 T | Mms | 70 g |
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Diameter HP |
404 mm | Sd | 855 cm² |
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Frame thickness |
Alu 10mm | ||
| Diameter fixation holes | 382 mm | ||
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Diameter drilling enclosure |
358 mm | ||
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Depth HP |
165 mm |