u/No-Swimming-1320

Maybe a stupid question, but I'm having trouble getting my subwoofer to work with my new setup. I just got the Marantz Model M1 (incredible sound, by the way!) to replace a Denon AVR, also got a lot of power I only can use 15 to 20 percent of the volume it has a punch.

I have Two Klipsch R-820F floorstanders and One Klipsch R-120SW my High Pass Filter (HPF) set to 80Hz, Subwoofer Low Pass Filter (LPF) set to 40Hz.

The problem is the subwoofer isn't outputting any sound at all. Any ideas on what I might be doing wrong?