Bogen Model WMT-1A Line Input/Line Output Impedance Matching Power Transformer. The Bogen WMT1A Line Input/Line Output Matching Transformer is designed to match either a high-impedance input, or output of an amplifier, to a 500/600-ohm line. It may be used to connect telephone systems to most amplifiers, or for distributing background music that is transmitted over leased telephone lines. The unit also functions as an output-matching transformer to feed program material over a 500/600-ohm telephone line for transmission to a local broadcast studio. The WMT1A provides an impedance match between the 500/600-ohm balanced line and the high-impedance (auxiliary) input of the amplifier, or the 25-volt output of the amplifier. The 500/600-ohm line input or output connections are made to a screw terminal strip. Connection to the amplifier is provided by a shielded cable terminated in an RCA phono plug. Mounting flanges are provided to mount the WMT1A to the amplifier chassis or backboard. No wiring or soldering is required for making connections in most cases. A jumper is easily repositioned when connecting the WMT1A highimpedance output to the MIC input of the amplifier.
Model Number: WMT-1A
Specifications:
| Function: | Impedance matches inputs/outputs to a 600-ohm line |
| Frequency Response: | 50 Hz to 20 kHz ±2 dB |
| Sensitivity: | Less than 0.1V across 600-ohm line required for full output power from average amplifier; Maximum level +20 dBm |
| Output: | Approx. 1.73V output when connected across 25V output tap or WMT1A Hi-Z output connection on a Bogen amplifier |
