System stopped working! please help!

[jorensmith23 10+ year member]

Okay I just got done with all the testing that I could. I checked the subwoofers and they are working. I checked the power wire, the REM wire to make sure they are getting power. I did find one issue, the second amp that I was using somehow broke since the last time I used it. The last time I used it, it worked fine but it's been sitting in my garage for months in the cold, and my dad told me it had a history of cutting out years ago, and we checked the channels on it and nothing was giving out power. So it was a bad fluke that that was the amp I went to to try and get my system work. Now, I hooked my first amplifier back up and this time only hooked a small speaker to one of the channels and turned the volume very low and it didn't go into safe mode. I'm about to put my subs back into my box and put it back in my car to see if its fixed from rewiring the amplifier up. The only 2 wires that could have been lose was the REM wire and the ground wire. The first thing I checked when all this went wrong was my REM wire, so that rules that out, the thing I didn't check was my ground, it was still in my amplifier of course, but it wasn't rock solid "this is in as absolutely best as it can be" in. Now it is. So hopefully it really is that easy. All my fuses are good. I will be back later to tell you if this worked or not.

 

[newdude 10+ year member]

Ground wire will do it for sure

 

[jorensmith23 10+ year member]

I knew something was up. That ground has been that way for months and never caused an issue. Sure now its perfect, but before it was still grounded nicely. The problem is this. My amplifier is not letting me wire my subs down to 2 ohms anymore. This amplifier has been fine in 2 ohms for months, in the manual it says its a 2 ohm amplifier, so I have no idea why when I was driving one day, it decided to not allow it anymore. Any ideas on what's going on? I wired it back to where each sub is on its own channel so its 4 ohms, and now the amplifier doesn't go into safemode. This isn't too big of a deal, as I realized my amplifier and subs were not to the scale that I wanted anyways and have been planning on buying a new amp and subs in about 2 months, but I would like to at least get the most out of this one while I can, is there any idea what happened internally that made it stop working in 2 ohms?