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EUROLIVE B212/B215
5.3 Stereo operation with a subwoofer
Using a crossover, the main output signal of a mixing console is
split into a stereo signal and a mono signal. The mono signal
covers the lower frequency range and the stereo signal covers
all other frequency ranges. Then, the stereo signal is connected
to a stereo power amplifier. A B212/B215 is connected to each
of the amp outputs. The mono subwoofer signal is connected to
one channel of an additional power amplifier, which powers one
E1800X subwoofer.