Hey everyone I'm having a problem with my amp.
Bought a 2010 Altima, and put my subs with a new Alpine deck in it. Everything was working fine for several months. Then I unhooked it, installed some 6x9s in the rear, I did move the amp wires around a bit, and when I hooked the amp back up I was hearing engine noise coming through the subs.
I also can hear noise from a CD spinning in the deck, when I have the source set to CD. It thumps quite loudly when I first turn on the deck as well. I installed my old deck, all the same issues. So I'm pretty sure it's not the deck itself. I have my ground wire connected to a pre-existing bolt in the trunk. I sanded away the paint to get a good connection, and it was working fine prior to installing the 6x9s. I know that's not ideal, but it has always worked for me in my other cars, and did in this new car until now.
I also tried a different RCA cable, which I strung through the car over the seats so it did not touch any metal or anything. Same problem. Something that really baffles me, is if I push on the RCA cable at the amplifier just right, the noise disappears. As soon as I let go the noise comes back. Its an older mono amp, around 10 years. Rockford Fosgate 500bd.
So, it seems like it's probably a grounding issue, but I really don't know what to do next. I would love any ideas on how I can diagnose this problem. I'd rather not pay a shop. Thanks in advance for any insight!
Bought a 2010 Altima, and put my subs with a new Alpine deck in it. Everything was working fine for several months. Then I unhooked it, installed some 6x9s in the rear, I did move the amp wires around a bit, and when I hooked the amp back up I was hearing engine noise coming through the subs.
I also can hear noise from a CD spinning in the deck, when I have the source set to CD. It thumps quite loudly when I first turn on the deck as well. I installed my old deck, all the same issues. So I'm pretty sure it's not the deck itself. I have my ground wire connected to a pre-existing bolt in the trunk. I sanded away the paint to get a good connection, and it was working fine prior to installing the 6x9s. I know that's not ideal, but it has always worked for me in my other cars, and did in this new car until now.
I also tried a different RCA cable, which I strung through the car over the seats so it did not touch any metal or anything. Same problem. Something that really baffles me, is if I push on the RCA cable at the amplifier just right, the noise disappears. As soon as I let go the noise comes back. Its an older mono amp, around 10 years. Rockford Fosgate 500bd.
So, it seems like it's probably a grounding issue, but I really don't know what to do next. I would love any ideas on how I can diagnose this problem. I'd rather not pay a shop. Thanks in advance for any insight!