RCA and Balanced XLR Pre-Amp Outputs—Connecting Subwoofers
The pre-amplifier outputs include subwoofer outputs. Although subwoofers are considered to be speaker channels,
they are generally self-amplified and, thus, connect in the same way you’d connect an external amplifier. Your AVM/
MRX features two subwoofer outputs (the AVM 90 features four). Each sub output has its own position delay, level,
and Anthem Room Correction filter, however they all receive the same signal which is the LFE + low-pass portions of
small speakers on other channels (MRX540 and 740 have paralleled subwoofer outputs). There is also a mode where
front left and right channels are set to large (full range) and the low-pass of left and right channels is also added to
the subwoofer.
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