Weatherproof monitors-WM4
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The WM4’s more compact cabinet houses a 130 mm (5 in) bass / midrange driver and a Nautilus™ tube-loaded tweeter. As with the other models, the WM4’s corrosion-proof materials and self-draining ‘J port’ resist the elements. And, in line with the WM6, the WM4’s wall bracket allows it to be angled in both vertical and horizontal directions.
| Description | 2-way vented-box system | |
| Drive units | 1x o25mm (1 in) Nautilus™ tube | |
| loaded metal dome high-frequency | ||
| 1x o130mm (5 in) woven fibreglass cone bass/midrange | ||
| Frequency range | -6dB at 60Hz and 30kHz | |
| Frequency response | 72Hz–20kHz ±3dB on reference axis | |
| Dispersion | Within 2dB of response on reference axis | |
| Horizontal: over 40° arc | ||
| Vertical: over 10° arc | ||
| Sensitivity | 87dB spl (2.83V, 1m) | |
| Harmonic distortion | 2nd and 3rd harmonics (90dB, 1m) | |
| <1% 95Hz–20kHz | ||
| Nominal impedance | 8Ω (minimum 3.0Ω) | |
| Crossover frequency | 3.5kHz | |
| Recommended amplifier power | 25W–90W into 8Ω on unclipped programme | |
| Max. recommended cable | 0.2Ω | |
| Dimensions | Height: 230mm (9.0in) | |
| Width: 162mm (6.4in) | ||
| Depth: 187mm (7.4in) | ||
| Finishes | Black & Pearl White |