Audio Note AN-E LX Specs - Manual (Page 7)

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Bi-amplifying involves using two stereo or four mono power amplifiers to drive the
loudspeakers. When using two stereo power amplifiers, or four monaural amplifiers,
it is possible to bi-amplify in three ways:
Figure 3 shows both channels of a stereo amplifier driving one loudspeaker system.
In the illustration, the right channel is driving the HF unit; the left channel drives the
LF unit. This would be repeated with the second stereo amplifier and the other
loudspeaker system.
Figure 4 shows an alternative method for using two stereo amplifiers to bi-amp
your Audio Note™ speakers. both channels of a stereo amplifier driving one
loudspeaker system. Using this method,, both channels of one stereo amplifier are
used to drive the HF units in the two loudspeakers while both channels of the second
stereo amplifier are used to drive the LF units in the two loudspeakers.