white ice

i am getting a little bit of altenator whine. the gain on my fosgate amp is set about 55%, anymore causes whine. i have checked my ground, ran the fosgate patch cables on the other side of the sc3 than the power wire. if i bought a new headunit (maybe the kenwood mp728), would the 5v pre out help with my whining noise? it already has 1 inline noise filter on it. thanks
WI

GSoup

How many watts RMS is the amp? what size ground wire are you using? Where did you ground it to?

white ice

its 200x1 @ 4 ohms . the ground wire is 8awg and grounded to a big bolt that goes to the chassis to the left of the gas tank,

engin_ear

iTrader: (1)

Use a star washer on the ground connection and scrape off the paint under it to make sure you have a solid connection.
You could also consider adding a line driver to increase line voltage and generate balanced connections to your amp. Try www.audiocontrol.com.