Proficient F400
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| Depth: | 101 mm |
| Description: | Recessed, suspended, Hi-Fi, front loudspeaker, number of lanes: 2, passive, bass-reflex type |
| Width: | 191 |
| Height: | 610 |
| Additional Information: | Rotary tweeter; bass and treble switches ±3dB |
| Type: | Passive |
| Purpose: | Hi-Fi |
| Number of lanes: | 2 |
| Impedance: | 4 ohm |
| Sensitivity: | 86 dB |
| Location: | Recessed, suspended |
| Maximum frequency: | 20000 Hz |
| Minimum frequency: | 62 Hz |
| Acoustic radiation: | Monopolar |
| Acoustic design: | Bass-reflex type |
| Speaker type: | Front speaker |
| RF emitter material: | Aluminum |
| RF driver dimensions: | 25 mm |
| Woofer dimensions: | 2x 101.6mm |
| RF emitter type: | Dome |
| Emitter type: | Dynamic |
| Wall mount: | There is |
| Removable grid: | There is |