Low volume issue after receiver swap
I recently replaced my Sony receiver STR-DN850 with a Denon X4400H over the weekend. My current setup has always worked fine 5.1.4 with bass shakers as well going to a separate amp (shaker amp). Ever since I setup my new Denon, my sub is barely doing anything as well as my shakers. My system hasn't changed other than the receiver, it seems like i lost a lot of power from my sub and shakers. Can anyone help?
Please make troubleshooting simple, as I am a intermediate av guy.