ELAC SUB 2050 Operating Instructions Manual page 30

HiFi stereo system
Bass support for HiFi loudspeakers
The loudspeakers receive the full signal directly from the amplifier with the subwoofer providing support and reinforcement
down to the lowest frequency ranges. For best results, we recommend not setting the cutoff frequency on the subwoofer too
low., i.e., creating a significant overlap with the main speakers and maintaining a moderate output level on the subwoofer. It
is particularly important to set the phase correctly (see page 24).
Connecting the subwoofer in parallel to the loudspeakers does not place any additional load on the amplifier, as the input
circuitry in the subwoofer is merely using the voltage information and is not drawing any additional power.
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