Hi, I am new to HT system. I got a marantz 4200 connecting to 2 front speaker + 1 center speaker + 1 passive subwoofer. The way I connect my subwoofer is front LR output from amp to subwoofer LR inputs and my speakers to LR subwoofer outputs. I realised that the subwoofer is not playing "low frequency effects" as effective. I do not want to spend extra $$ on a active subwoofer. I intend to connect the subwoofer via LEF output from my amp but my subwoofer has only speaker jack for speaker wire i.e. my current connection. How can I work around on that?