Acoustic system Polk Audio CSi A4
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| Depth: | 222 mm |
| Description: | Shelf, for home theater, center channel, number of bands: 2, passive, bass-reflex type |
| Width: | 508 |
| Height: | 175 |
| Type: | Passive |
| Purpose: | For home theater |
| Housing material: | MDF |
| Number of lanes: | 2 |
| Impedance: | 8 ohm |
| Sensitivity: | 89 dB |
| Location: | Shelf |
| Maximum frequency: | 27000 Hz |
| Minimum frequency: | 55 Hz |
| Acoustic radiation: | Monopolar |
| Acoustic design: | Bass-reflex type |
| Speaker type: | Central channel |
| RF emitter material: | Silk |
| Woofer material: | Polymer composite |
| RF driver dimensions: | 25 mm |
| Woofer dimensions: | 2x 133.4mm |
| RF emitter type: | Dome |
| Emitter type: | Dynamic |
| Recommended amplifier power min.: | 20 W |
| Recommended amplifier power max.: | 180 W |
| Removable grid: | There is |
| Gold plated connectors: | There is |
| Connector for connecting to a power amplifier: | Screw |