It could be the placement of the Sub or room environment. It could be the audio source. Does your “man cave” have carpet or is it mostly hard surfaces? Have you run Trueplay tuning? Have you adjusted the Arc’s EQ settings and Sub Level in the Sonos app?

It’s carpet unfortunately but it’s not even close to the sub downstairs. I’ve run true play and tried adjusting settings or all speakers on the app. I’ve had the other system in my living room a couple years and seamed like i had the problem with that sub when i first hooked it up but can’t remember what i did. I played same song I’m my living room on same settings and then played same in my man cave and it was almost like it was no bass when compared 

What do you have the Sub Level set to?

Tried different settings. +3 is what it’s set on in my living room and puts out more bass than if i put it on +12 in the new room

Have you considered unbonding the Subs and swapping them?

I did think about trying that to see if it was the sub  or it might just be the room and the carpet like you said

Hi @Russdawg03 

@GuitarSuperstar’s suggestion is an excellent one - swap the Subs and if the issue sticks with the room then the issue is likely due to speaker placement. If it follows the Sub, however, I recommend you get in touch with our technical support team, who have tools at their disposal that will allow them to give you advice specific to your Sonos Sub.