Quad ESL-989
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| Weight: | 25.3 kg |
| Description: | Outdoor, Hi-Fi, front speaker, number of lanes: 3, active, open type |
| Type: | Active |
| Purpose: | Hi-Fi |
| Number of lanes: | 3 |
| Impedance: | 8 ohm |
| Crossover frequency: | 500 Hz; 8 kHz |
| Location: | Floor |
| Maximum frequency: | 20000 Hz |
| Minimum frequency: | 35 Hz |
| Acoustic design: | Open type |
| Speaker type: | Front speaker |
| Finish options: | Black, nouveau, vintage. |
| Emitter type: | Electrostatic |