If you have a receiver or integrated amplifier with a pre-out / main in loop, you can insert the
EQ901B as shown below.
3.3 Active Subwoofer Setup
The two unused outputs connect to your subwoofer L and R line inputs. The subwoofer
controls can then be adjusted to your preference.
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EQ901 Elite User Guide - Rev. 05242022 deercreekaudio.com