Toady Posted December 11, 2010 Report Share Posted December 11, 2010 I installed a buddies sound system earlier in the week and I've been trying to figure out the problem ever since.. I ran the Power and RCA's on different sides of the vehicle. Its a 2003 Eclipse, so i had to work around the factory amp since it wont work with a Aftermarket radio. So i rewired all door speakers and hook ed them in to a aftermarket amp. Ran the subs to the other aftermarket amp. (Both were MTX Terminator 600's)ran remotes to the two amps, used a grinder wheel to grind a spot that lead directly to frame to ground both amps. The HU only had one set of Rca Preouts so i ran a set of Rcas with Y Splitters to both amps. Everything is wired 100% correctly, amps are tuned, corect impedance. But when the car turns on there is a bunch of alternator noise through the speakers. Its so bad that there is no music playing. 1. I have ran different new rca cables same problem. 2. I have checked for pinched speaker wires same problem. 3. The only thing im not sure about is bad HU Preouts.. I'm sure that would cause it but the guy doesnt want to buy a new HU, Is there anyway around this??? Link to comment Share on other sites More sharing options...
Guest Posted December 11, 2010 Report Share Posted December 11, 2010 Pioneer headunit? Link to comment Share on other sites More sharing options...
n8ball2013 Posted December 11, 2010 Report Share Posted December 11, 2010 Pioneer headunit? thats where my money is is therea ground distribution block? THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger. Link to comment Share on other sites More sharing options...
Toady Posted December 11, 2010 Author Report Share Posted December 11, 2010 Pioneer headunit? thats where my money is is therea ground distribution block? It might be a pioneer Hu or a Sony, There is no ground distribution Block Link to comment Share on other sites More sharing options...
Spitfire2k6 Posted December 11, 2010 Report Share Posted December 11, 2010 Ive got this same problem with a pioneer HU, could it be the pre-outs? Live life to the full... Then TURN THAT BITCH UP! Link to comment Share on other sites More sharing options...
Superjay Posted December 11, 2010 Report Share Posted December 11, 2010 if it's a pioneer HU then ground one of the RCA negatives to the chassis of the HU. If not a Pioneer you need to check the location of the RCA Y's...are they near the fuel pump? are they near factory wiring? Remember, Y's are NOT shielded, and create a point of entry for noise every time they are used. This doesn't mean you will always get noise, but there is always that chance. Also, run a ground wire from the HU chassis to the amplifier ground. This will equalize the potential ground differential. I'm guessing you used the factory radio harness...always a bad ground for the HU. Principal JTech Consulting - Leader in 12-Volt Training and Product PlanningIt's not about how much power you have, but how well you use it Link to comment Share on other sites More sharing options...
Guest Posted December 11, 2010 Report Share Posted December 11, 2010 Just try grounding out the Eva negative post. Take a piece of thin-ish speaker wire. Take all insulation off and wrap it around the outside of the rcas on the headunit itself. Then with the end of it, screw it to the headunit frame. Should be good to go then. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.