A few weeks ago my son and I installed my 10 year old Kenwood amp and MB Quart front components. These have not been played hard and have been in storage for the last 7 years.

After a week I started to hear a crackeling sound coming from both right side speakers and then a few days later I could hear an alternator whine.

The rca's are not near the power lead and the ground wire is less than a foot long.

Tomorrow we plan on switching rca's and speaker wires to see if that makes a difference.

Any thoughts on what might be causing this?
TIA

crossovers could be to close to power wires

Crossovers are located in the doors.

make sur eur speaker wire is far from your power wire. i had the same problem.. that fixed it for me...
good luck

Usually when a system is alright and then starts to make noise over time I have a look at all the ground and power connections. Rust/corrosion does not take long and it does strange things.