Use of a 70 Volt matching transformer is possible with a 140 Volt system by connecting the tap that is rated for 1/4 power or less of desired 70 Volt tap. For example‚ a ceiling loudspeaker with a 70 Volt input tapped for 20 Watts is to be used with a 140 Volt constant-voltage system. The 140 Volt system will need to be connected to the 5 Watt tap in order for the loudspeaker to produce 20 Watts. If a 5 Watt tap is not available‚ use the next lower tap.
Caution: Output voltages greater than 120 Volts RMS are available between the bridged terminals. CLASS 3 wiring must be used in accordance with national and local codes to connect the loudspeaker system.
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