OMNITRONIC GSP-30 is a passive 2-way coaxial garden speaker for 100 V public-address installations. It uses one 6-inch woofer and a 0.75-inch tweeter, with selectable 15 W or 30 W RMS power tapping. The fiber-glass cabinet is dark brown, scratchproof, shockproof, and rated IP66 for outdoor use. Frequency response is 95–13,000 Hz, with dimensions of 27.1 cm height and 26.5 cm diameter, and a weight of 6 kg.