audio set-up for beginners [continued]

[benchman]

Questions mga sir

Car: Hyundai Genesis
Sound system: Everything stock (with amplifier)
Issue: hissing sound that increases with the vehicle rpm.

What to check? Thanks in advance


Sent from my iPhone using Tapatalk

look for the grounding points both the amp and HU, poor body/chassis contact maybe.
transferring to a much solid panel fixes it sometimes.

edit:
RCA cables running along side with the amp's power cable causes noise too.