ground noise
09-04-2008, 09:21 AM
#3
50 Watt CAFz'r
Thread Starter
Join Date: May 2007
Posts: 56
lol ok car 1993 3000gt
amp jl 300/4 (using front section to power front speakers and rear section to power a 8" sub)
when i have just the rear plugged in plays fine when i plug in the rca for the front both the amo and the tweeters make ground noise
amp jl 300/4 (using front section to power front speakers and rear section to power a 8" sub)
when i have just the rear plugged in plays fine when i plug in the rca for the front both the amo and the tweeters make ground noise
09-05-2008, 12:09 AM
#5
0 Watt CAFz'r
Join Date: Jun 2007
Posts: 18
okies well since you seem to have a good gear selection i'd assume you dont have power and rca down the same side 
double check for great grounds, see if the rcas may be too close to the fuel pump wiring? not too up on my 3000gt knowledge. you can run a small ground equalizer wire from your amp ground to your deck ground which has made a world of difference on customer honda civics for me before. routing for your front left and right wires too close to a dirty power source? pinched rcas? have you done the big three? somethings to think about. there are so many stupid little things that cause unwanted noises its rediculous.
double check for great grounds, see if the rcas may be too close to the fuel pump wiring? not too up on my 3000gt knowledge. you can run a small ground equalizer wire from your amp ground to your deck ground which has made a world of difference on customer honda civics for me before. routing for your front left and right wires too close to a dirty power source? pinched rcas? have you done the big three? somethings to think about. there are so many stupid little things that cause unwanted noises its rediculous.
09-05-2008, 10:58 AM
#7
Cable location has little to do with ground loop problems.. and it's not necassary to run rcas on opposite sides of the car from power cable... induced noise is cause by alternating magnetic fields created by your alternator.. not from any magnetic field created by DC current flow...
check out navone engineering's website for some sure fire fixes... the HU powersupplies with active noise supression work well and are pretty inexpensive...
check out navone engineering's website for some sure fire fixes... the HU powersupplies with active noise supression work well and are pretty inexpensive...
11-18-2008, 01:14 AM
#8
Cable location has little to do with ground loop problems.. and it's not necassary to run rcas on opposite sides of the car from power cable... induced noise is cause by alternating magnetic fields created by your alternator.. not from any magnetic field created by DC current flow...
check out navone engineering's website for some sure fire fixes... the HU powersupplies with active noise supression work well and are pretty inexpensive...
check out navone engineering's website for some sure fire fixes... the HU powersupplies with active noise supression work well and are pretty inexpensive...
11-19-2008, 09:44 PM
#9
0 Watt CAFz'r
Join Date: Nov 2008
Posts: 9
you may have a bad battery or alternator. start the car and turn the radio on.. listen to the engine whine.. turn your headlights and AC on.. if the whine gets worse you might have an alternator problem. try re grounding the battery and your am grounds...
11-23-2008, 07:39 AM
#10
Yankee
Join Date: Oct 2003
Posts: 3,599
either the RCA (HU to amp) is dicked or your signal from the amp to the speakers is touching ground
