Alto SR400P
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| Weight: | 1.68 kg |
| Depth: | 378 mm |
| Description: | Concert, number of bands: 2, passive, bass-reflex type |
| Width: | 378 |
| Height: | 615 |
| Type: | Passive |
| Purpose: | Concert |
| Housing material: | MDF |
| Number of lanes: | 2 |
| Impedance: | 4 ohm |
| Sensitivity: | 94 dB |
| Crossover frequency: | 2 kHz |
| Maximum frequency: | 20000 Hz |
| Minimum frequency: | 47 Hz |
| Acoustic radiation: | Monopolar |
| Acoustic design: | Bass-reflex type |
| RF emitter material: | Titanium |
| RF driver dimensions: | 25.4mm |
| Woofer dimensions: | 304.8 mm |
| Emitter type: | Dynamic |
| Maximum sound pressure: | 122 dB |
| Rated power: | 400 W |
| Bandwidth Options: | - 10 dB |
| Sensitivity Measurement Options: | DB/W/m |
| Column wall thickness: | 15 mm |
| Connector for connecting to a power amplifier: | Speakon |