Acoustics Challenger MS-520
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| Brand: | Challenger |
| Description: | Coaxial speaker 13 cm 5 inch. |
| Type: | Coaxial speaker |
| Dimensions: | 130 mm |
| Power: | 120 W maximum |
| Number of lanes: | 2 |
| Frequency response: | 70 - 20000 Hz |
| Size: | 13 cm 5 in. |
| Impedance: | 4 ohm |
| Sensitivity: | 90 dB |
| Installation depth: | 59 mm |
| Diffuser material: | Carbon |