Engineered to withstand extreme Differences in humidity and temperature, the ES20 outdoor speakers are a perfect choice for your garden, patio or rooftop. Despite their compact size they deliver great bass, thanks to a ported cabinet design and a finely tuned 5.25&Rdquo; mid bass driver. Treble is handled by a 1” aluminium dome tweeter for the Crispest performance and an expressive sound. Sensitivity; 88dB (1 Watt input) frequency responses; 65Hz – 20kHz Impedance; 4 - 8 Ohms recommended amplifier powering; 10 – 100W drivers 1 x 5.25&Rdquo; injection-moulded cone woofer, 1 x 1” anodized aluminium dome tweeter crossover; 2-way first Order speaker dimensions 273 x 172 x 165mm (10.7 x 6.8 x 6.5") (H x W x D) weight 2.5kg (5.5lbs) colour white.