The MONO-BRIDGE operation of the MC 7270 amplifier
always requires the speaker load to be connected be-
tween two opposite channel impedance terminals. The
common terminals are not used. Do not connect leads in-
dependently between left and right channel impedance
taps as this will cause high circulating currents and
overheating. Connect the speaker leads to the output ter-
minals as listed in this chart:
Load Impedance Connect the Connect the
In Ohms -Speaker Cables to: +Speaker Cables to:
2 Left 1 Ohm Terminal Right 1 Ohm Terminal
4 Left 2 Ohm Terminal Right 2 Ohm Terminal
8 Left 4 Ohm Terminal Right 4 Ohm Terminal
16 Left 8 Ohm Terminal Right 8 Ohm Terminal
Neither output terminal is at ground potential.
To use the MC 7270 to feed a line whose constant
voltage is 25 volts, connect the speaker cables for 2 ohm
MONO-BRIDGE output.
8 HOW TO CONNECT
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