There are three ways to the active subwoofer with receiver:Option 1.Connect the sub’s speaker level inputs to 2230 in parallel with the main speakers.Option 2-Disconnect the speakers from 2230 receiver Then attached the speaker’s cables from 2230 to the subwoofer speaker level inputs If the subwoofer allows it, then run the speaker’s outputs level to speakers.Now adjust the subwoofer to check Option 3-Take two male/male/female “Y” connectors.Turn off the primary amp/preamp connections from 2230.Now replace it with the “Y” connectors and male close.Then run interconnects from drooping Female RCA jacks to discover level inputs of sub.