Electronic traders Ahuja Speaker Outdoor/Indoor Srx 50Dx 2-8Inch, 50W A compact general purpose speaker column using two full range dual cone 8" speakers, reproducing a clean undistorted sound for both speech and music. The system is housed in a rugged closed box enclosure made of 12mm medium density fibre board, and has a durable black shock resistant paint finish. Srx-50dx has nominal impedance of 16w, srx-50xt operates on 100v line with three power taps selectable through a rotary switch.