well i came across a nice little write-up on how to try an eliminate "engine whine" etc. maybe most of u guys see it before, but its the first for me, so i thought i'd post it:

http://www.termpro.com/articles/noise.html

i had a couple questions about the article too.

#(1) regarding # 6 rule. it said "Make sure the amplifiers have a good audio ground reference" after reading that paragraph, i cant quite understand it. can anyone tell me in easier terms what it basicaly means?

AND

#(2) regarding # 8. they say dont ground all ur amps to one bolt. BUT i thought u were supposed to ground everything to one spot, like a bolt in the trunk of a car or whatever.

now should i ground in DIFFERENT areas like it recommeneds or ALL at the same spot. i thought i would run ALL my amp grounds to the same spot along with my (cd changer, head unit, EQ also to where the amps are grounded)

is this not a good idea?

 

(2) If its not competition, then ground all at one spot if you wish. Some people will around where ever it is conveinent in order to keep a short ground wire, but it doesnt really matter IMO for a daily driver. I know people will argue this.

(1) It means make sure your amp has a good ground. Sand away any paint or anything so your ring terminal comes into contact with bare metal.

Remember, if it aint broke, dont fix it.

 

Thats what I know too, Ground in one common spot. I remember opening my centre console and the manufacturer of the car had grounded all the accessories to on common spot aswell.