newls1 Posted April 8, 2010 Author Report Share Posted April 8, 2010 Resistance between those points is probably 0.000001 ohms. Doesn't make a difference as long as each bolt is done properly. Ground loops come from the signal side of things 99% of the time - bad RCA ground or bad headunit ground is such a common one. There u are BOON, haven't seen u in a while .... I actually have a seperate ground for the headunit, grounded to a firm metal bracket behind the dash, nice and clean and secure. my RCA's are brand new stingers, and since my HU swap 2-3 weeks ago (I replaced my HU and all rca's) some of the noise did go away, but not all of it. I love my staffie So anti FACEBOOK it isn't even funny Link to comment Share on other sites More sharing options...
newls1 Posted April 8, 2010 Author Report Share Posted April 8, 2010 Meh, I just run straight ground from front battery to rear batteries. But the 2 separate grounding locations next to each other shouldnt cause any issues at all! Do you have any rca's near a power wire, such as by your amp rack, or crossing over a battery? Even shielded rca's will get bad noise running over a power wire. I know I had to be very careful on my layout with the high amps mounted right above the batteries or I had noise. oh ya, I have rca's going over my power wires like crazy....... Really hard not to really.... I will move them as best as possible and see what happens.. Thanks I love my staffie So anti FACEBOOK it isn't even funny Link to comment Share on other sites More sharing options...
raytard Posted April 8, 2010 Report Share Posted April 8, 2010 hey, just my experience with it, but i had noise that literally overpowered my music till half volume, and now i have so little I cant hear it over the background hiss of a Pink Floyd album. rcas moved far from power (or anything that had alot of power going through it, motors, ac blowers, transformers on amps, batteries, busbars<def made a difference, i can touch my rca to power and hear the noise come back grounded rcas in back of radio<big difference. if the radio had good rca grounds it wouldnt, but my radio happened to have bad ones (pioneer...) made sure grounds were as legit as possible (0g with soldered lugs, going to unpainted half inch thick steel with a brass bolt) <no difference, i guess my ground was fine ran radio ground to chassis<no difference. then again i switched from a long wire to the passenger kick, to a strong steel piece in the dash. installed better rcas(from monster bulk to kicker twisted)<no difference AND 2 channels went out cuz the ends separated back to monster bulk's in desparation, installed a rockford RFBLD. <flicked the switch and 98% of my noise disappeared. retuned the gains (now that i had 11v on tap) and got rid of the other 2%. not to mention, things sounded a whole lot better. i cant tell if its nuances coming through that were normally lost under the ground noise, or an actual improvement in my sound, but i'll be damned if it doesnt sound a whole lot better to the ear either way. so thats just my experience with a drastically different car, but if you're trying to track it down, you now have a bunch of ideas of what it could be. Build: http://www.stevemeadedesigns.com/board/ind...hl=avalon+build monster/rockford/kicker/stinger cables, pioneer source, jbl highs/amps, kinetik/shuriken batts, iraggi alt, dei security, dc subs(atleast for now) Team DC Link to comment Share on other sites More sharing options...
newls1 Posted April 8, 2010 Author Report Share Posted April 8, 2010 hey, just my experience with it, but i had noise that literally overpowered my music till half volume, and now i have so little I cant hear it over the background hiss of a Pink Floyd album. rcas moved far from power (or anything that had alot of power going through it, motors, ac blowers, transformers on amps, batteries, busbars<def made a difference, i can touch my rca to power and hear the noise come back grounded rcas in back of radio<big difference. if the radio had good rca grounds it wouldnt, but my radio happened to have bad ones (pioneer...) made sure grounds were as legit as possible (0g with soldered lugs, going to unpainted half inch thick steel with a brass bolt) <no difference, i guess my ground was fine ran radio ground to chassis<no difference. then again i switched from a long wire to the passenger kick, to a strong steel piece in the dash. installed better rcas(from monster bulk to kicker twisted)<no difference AND 2 channels went out cuz the ends separated back to monster bulk's in desparation, installed a rockford RFBLD. <flicked the switch and 98% of my noise disappeared. retuned the gains (now that i had 11v on tap) and got rid of the other 2%. not to mention, things sounded a whole lot better. i cant tell if its nuances coming through that were normally lost under the ground noise, or an actual improvement in my sound, but i'll be damned if it doesnt sound a whole lot better to the ear either way. so thats just my experience with a drastically different car, but if you're trying to track it down, you now have a bunch of ideas of what it could be. Thanks bud, I appreciate your reply.... I love my staffie So anti FACEBOOK it isn't even funny Link to comment Share on other sites More sharing options...
killallblue Posted April 8, 2010 Report Share Posted April 8, 2010 i had this problem i had to make my grounds shorter Link to comment Share on other sites More sharing options...
killallblue Posted April 8, 2010 Report Share Posted April 8, 2010 i had this problem my ground was to long Link to comment Share on other sites More sharing options...
t-money Posted April 8, 2010 Report Share Posted April 8, 2010 when u move your rca's try wrapping the cable in aluminum foil. extra shielding 2002 ford focus hatch pioneer DEH-P8400bh infinity kappa 6.5 components front and rear XS Power D1200 Shuriken BT-100 audioque 120.4 2 15 inch audioque HDC3 D2 2 audioque 2200d big 3 mechman 220a alt with external regulator 479-418-3056 Link to comment Share on other sites More sharing options...
newls1 Posted April 8, 2010 Author Report Share Posted April 8, 2010 ok, I need to be MORE SPECIFIC HERE! with just the key on (truck not started though) there is NO HISS/WHINE what so ever.....everything is crystal clear. The problem starts when the truck is started. Once truck is running, the hiss goes up with engine RPM, and I have to bring the radio to about "12" on volume to not hear it anymore. If I rev the motor, the noise gets louder, etc.......... driving me crazy! My grounds are SHORT, except for the runs of ground from front batt to rear batt buss bars. and all grounds are CLEAN and SECURE! I enjoy the wiring part of car audio, and dont half ass my wiring.... So now that I've described my issue better, what might help me here? Thanks I love my staffie So anti FACEBOOK it isn't even funny Link to comment Share on other sites More sharing options...
L8-NiTe Posted April 8, 2010 Report Share Posted April 8, 2010 Ever check the spark plugs?After reading this i started to search for common problems and remedies to fix them,i came across this article and i hope you take the time to read it.It may very well have the answer to your problem.Good luck! http://www.termpro.com/articles/noise.html Link to comment Share on other sites More sharing options...
finkster Posted April 8, 2010 Report Share Posted April 8, 2010 I am willing to bet 99% that its the route of your RCAs...There can still be a problem with the RCAs being too close to power wires even when no noise is present when the engine is off. Same thing is happening in my car. Re routed the RCAs...as it turns out they were pretty close to the power wire on accident under the rear seat...re routed them and NO NOISE anymore from scoche wal mart RCAs Good luck man. DAT 4125------>RE XXX comps active Eclipse cd7000 I serve drunks for a living Link to comment Share on other sites More sharing options...
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