Lowell TLM-870 Line Matching Transformer - 8WLine matching transformer for high quality audio systems and general purpose paging applications where wide frequency response, low insertion loss, and high power handling are critical considerations. The TLM series features the industry standard open housing design and color coded leads for fast installation. Specifications Primary Voltage: 70V Power Rating: 8W Primary Taps: 1, 2, 4, 8W Secondary Impedance: 8, 4 ohms Frequency Response: 50Hz15kHz