Bogen WMT1A Manual

Line Input / Line Output
Matching Transformer
Model WMT1A
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 pro-
gram 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 high-
impedance output to the MIC input of the amplifier.
Specifications
Function:
Frequency Response:
Sensitivity:
Output:
Shipping Weight:
Impedance matches inputs/outputs to a 600-ohm line
50 Hz to 20 kHz ±2 dB
Less than 0.1V across 600-ohm line required for
full output power from average amplifier;
Maximum level +20 dBm
Approx. 1.73V output when connected across 25V
output tap or WMT1A Hi-Z output connection on
a Bogen amplifier
1 lb.