Acoustics Challenger Concept SD-650 II
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| Brand: | Challenger |
| Description: | Component speaker 16 cm 6 inch. |
| Type: | Component speakers |
| Dimensions: | 165 mm |
| Power: | 120 W maximum |
| Number of lanes: | 2 |
| Frequency response: | 65 - 20000 Hz |
| Size: | 16 cm 6 in. |
| Impedance: | 4 ohm |
| Sensitivity: | 86 dB |
| Installation depth: | 53 mm |
| Diffuser material: | Silk |
| External crossover: | There is |