The Q Acoustics QI45EW is a compact two-way on-wall speaker built to perform in demanding environments. Its UV-resistant ABS enclosure and aluminium grille make it equally at home outdoors — mounted above a garden terrace or patio — or in indoor locations where moisture, dust, or temperature variation would challenge a conventional speaker. An IPX4 weatherproof rating means the cabinet withstands splashing water from any direction, making the QI45EW a practical choice wherever a robust, reliable speaker is needed.
Inside, a 4.5-inch polypropylene cone woofer and 0.5-inch PEI dome tweeter are supported by a high-quality crossover network within a bass reflex enclosure. The result is a frequency response of 85Hz to 20kHz with 8-ohm nominal impedance and a sensitivity of 86dB/1W — well suited to amplifiers delivering 10W to 50W per channel. The included wall-mount bracket accepts hole spacings of 70mm and allows the speaker to be angled for accurate coverage of the listening area.
| Speaker Type | 2-way on-wall |
| Woofer | 4.5" polypropylene cone |
| Tweeter | 0.5" PEI dome |
| Frequency Response | 85Hz – 20kHz |
| Impedance | 8Ω nominal |
| Sensitivity | 86dB/1W |
| Power Handling | 10W – 50W |
| Weatherproof Rating | IPX4 |
| Enclosure | UV-resistant ABS with aluminium grille |
| Dimensions (incl. bracket) | 135 × 245 × 170mm (W × H × D) |
| Bracket Hole Spacing | 70mm |
| Finish | Black |
| Warranty | 5 years |
| Also Available As | White |