So I've had this for a while now and started really messing with it. I've noticed that even with a threshold of -40dB I'm only getting a blip from the gain reduction meter and very mild compression in regular or over easy mode. I'm led to believe this should nit be the case. I'm hooked up preamp send-1/4" signal input of the dbx-dbx signal output-preamp return. Do I need to wire up the strip?