Stereo & Electronics - Need help sub stop working

I was driving to work today everything was great and right as I got to work my sub stop hitting. i checked the wires from the amp to the box and its connected via rca cables and they had a good connection to the amp. All the other speakers are working just not the sub. I have completely bypassed the monsoon system, so all speakers run through my 5 channel amp. It might be the connectors inside the box just havent checked it yet and imput would help.

That's odd. Check all wires running from the amp to the sub. If they're all connected, try connecting the sub to a different channel just to see if the sub still works.

check the wires connected to the sub

I checked everything it was my head unit. for some reason it didn't recognize that it had a sub hooked up. I unplugged it for 10 seconds so it could reset itself and bam my bass is back lol. Thanks for the help and response always appreciated.