Suggestions - Amp/Battery Issues

jme097

Just to give you guys a little info on how I have my boat system wired...I have 2 amps (a 2 channel and a 5 channel) wired to one battery. The Power and ground wires are both 0 gauge and each have a 0 gauge to 4 gauge T on them which power and ground each amp. I have had them wired this way for about 6 weeks and have no issues. Went out to the boat today and turned on my head unit to get the tunes going while I was washing her and noticed only my 2 channel amp was pumping sound. But my 5 channel amp was infact powered on but just wasn't playing. I thought I had a problem with my 5 channel amp so I took it out and brought it home. I set it up and all the inputs and speakers channels do work. So that leads me to my next troubleshooting stage...I am thinking I have a weak battery but I have to bring my meter with me next time to the boat. I am looking for suggestions and/or advice on what you guys think.  Thanks guys!

Michael T

So, it's not the amp.  So I think all that's left is the connection to the speakers and the battery. Would the battery be so low as to power one amp and not the other? I don't think so unless the amp has a low voltage threshold to avoid damage. What about the speaker harness? Could it be failed ground? shorted?