I have a punch 450.4 installed in my car... was working fine for years and now i recently have been getting serious alternator whine even when the head unit is powered off... any suggestions?
Car Audio & Video - Rockford Fosgate - p-450.4 Car Audio Amplifier
Check your ground. At the battery check for oxidation, check your RCA's and make sure they are tight. It's usually something that's loose or rusted/corroded. If you still have noise, post a comment with car make model and year as well as audio products installed and I can help you troubleshoot further. Hope this helps.
Answers & Comments
Check your ground. At the battery check for oxidation, check your RCA's and make sure they are tight. It's usually something that's loose or rusted/corroded. If you still have noise, post a comment with car make model and year as well as audio products installed and I can help you troubleshoot further. Hope this helps.