2GN.ORG

evilneon02

thanks for taking the time to read this. I know this is not on a neon but audio is audio. bro-in-law has a nissan titan and we replaced the factory radio with a newer model rockford factory radio eveything hooked up the same the only diffrence is the new radio is 1/4 ohms and requires a rockford amp made for that model truck . So we bought a after market amp and ran the wires. we had to use the highs in. after everything was done the was a hum in the speakers and it gets louder when we hit the gas. this has puzzled us for the longest time. we tried grounding the amp case and nothing we tried grounding the highs on the amp because they have a ground wire and the noise got louder, we tried grounding the radio still there, we tired moving wires to make sure power wire doesnt cross the speaker wires and still there. ok so we was looking in to what could be the problem tonight and the truck was running and when we pull the ground off the amp and tried to cut the truck off it didnt stop running. the radio stoped but the truck was still running and we even took the key out. and know we can figure it out either. Need help bad!!!! I have installed many many amps to include my own and never ran into a humming sound nor a problem were the car/truck had stayed running after it was shut off because of a diconnected ground on a amp. i know a have all the right speaker wire for i use a 9v to check them to make sure i had the right ones. i am lost and now screwed up since the truck stayed running . HELP HELP PLZ
_________________
Brad

http://www.cardomain.com/ride/2315103
http://streetracing.tiora.net/japan/drift/drift1.htm

srtjesse · Posted: Sun Jul 25, 2010 1:11 am Post subject:

i had a similar problem it was the ground on the antenna hope this helps
_________________

im mesican end mie posts migt have zome myspelld wurds dil wid et

skaterking411 · Posted: Sun Jul 25, 2010 1:27 am Post subject:

Ive had a humming before i couldnt figure out. I ended up having to wrap a strand of bare wire across the rcas on the back and ground them to the radio
_________________

evilneon02 · Posted: Sun Jul 25, 2010 9:21 am Post subject:

ill check that ground out. as for the rca we did use them there was no room for a converter so we just used the high level in-put.
_________________
Brad

http://www.cardomain.com/ride/2315103
http://streetracing.tiora.net/japan/drift/drift1.htm

nineball · 2GN Registrant Age: 10 Joined: 14 Nov 2007 Posts: 884

how exactly did you keep the truck running without the key in it? that sounds like another problem that is not audio related.

the whine is caused by a bad ground somewhere in the hu or the amp. i guess it could be caused by the antenna but that is easy to check - unplug it and see what happens.

next step would be to start disconnecting one line at a time until the whine goes away. that should pinpoint what is causing it.

evilneon02 · Posted: Sun Jul 25, 2010 3:44 pm Post subject:

the truck only stayed running after i took the gronund off the amp. when i put the ground back the truck stopped running? we have added a second ground and it is still there we even grounded the radio. All lines are factory but the ones i had to splice into for the speaker wires. everything else hooked up the same as the old radio just one radio needed a amp and the old one didnt. power wire runs away from the speaker wires. ground is bigger then the power wire. if it is the antenna how would i solve the problem?
_________________
Brad

http://www.cardomain.com/ride/2315103
http://streetracing.tiora.net/japan/drift/drift1.htm

nineball · 2GN Registrant Age: 10 Joined: 14 Nov 2007 Posts: 884

you have some serious electrical issues to find and resolve, ignition too it sounds. if the key is turned off and removed from the vehicle, any vehicle, it should not stay running no matter what is connected. your problems are greater than just audio. i would not connect anything electrical to the car until it is fixed.

evilneon02 · Posted: Mon Jul 26, 2010 3:41 am Post subject:

thanks i cant take it out either lol could it be the remote wire? i just dont know how this is woroking.
_________________
Brad

http://www.cardomain.com/ride/2315103
http://streetracing.tiora.net/japan/drift/drift1.htm

evilneon02 · Posted: Fri Jul 30, 2010 3:48 am Post subject:

bump
_________________
Brad

http://www.cardomain.com/ride/2315103
http://streetracing.tiora.net/japan/drift/drift1.htm

Caraudioholic24 · Posted: Fri Jul 30, 2010 10:05 am Post subject:

ok im trying to figure out what setup you have running....you said you switched factory radio to a higher model factory radio w/ rockford package right??
_________________

***Under Construction*** GOT BOOST?

My for sale threads:
http://forum.2gn.org/viewtopic.php?t=52654

http://forum.2gn.org/viewtopic.php?t=47688

evilneon02 · Posted: Fri Jul 30, 2010 4:13 pm Post subject:

yes and this rockford package need a amp so we bought a aftermarket amp.
_________________
Brad

http://www.cardomain.com/ride/2315103
http://streetracing.tiora.net/japan/drift/drift1.htm

Caraudioholic24 · Posted: Fri Jul 30, 2010 7:36 pm Post subject:

Ok so you added an amp to the factory rockford unit..I see do you happen to have an aftermarket radio around....If you can try pluggging that in and see if the noise goes away...

you say you already checked all the grounds....the radio has a crappy ground from the factory..Make sure you ground it yourself...

Also you may want to try coverter boxes as the high level inputs may be picking up way too much noise....hell if the radio was abused it may have slightly damaged outputs....If you can try running an aftermarket radio and see what happens

worse case if you have to run a set of rcas to a radio in another car and run them to the amp. run your friends car and see what it gets for noise..
_________________

***Under Construction*** GOT BOOST?

My for sale threads:
http://forum.2gn.org/viewtopic.php?t=52654

http://forum.2gn.org/viewtopic.php?t=47688

evilneon02 · Posted: Sat Jul 31, 2010 10:17 am Post subject:

ok did some moving of wire and add a noise filter to radio still had humming so move filter to power wire on amp and noise is gone but i know the filter wire is to small for the amp is there anywhere i can buy a noise filter made for amps or anything i cound do to fix this problem.
_________________
Brad

http://www.cardomain.com/ride/2315103
http://streetracing.tiora.net/japan/drift/drift1.htm

Caraudioholic24 · Posted: Sat Jul 31, 2010 10:31 am Post subject:

ok i would maybe try a ground loop isolator on th rcas if you have any ( i have a couple i can send you)...also you could try this if you are positive its coming from the power wire

http://www.summitracing.com/parts/MSD-8830/

even if you have an old capacitor laying around charge it up and try it....Im not a fan of caps at all but in this situation it can be helpful.
_________________

***Under Construction*** GOT BOOST?

My for sale threads:
http://forum.2gn.org/viewtopic.php?t=52654

http://forum.2gn.org/viewtopic.php?t=47688

evilneon02 · Posted: Sat Jul 31, 2010 11:54 am Post subject:

is there a reason why it is coming through the power wire example (it maybe crossing another wire, battery terminal) or anything like that? maybe power wire to big for the little amp?
_________________
Brad

http://www.cardomain.com/ride/2315103
http://streetracing.tiora.net/japan/drift/drift1.htm

Caraudioholic24 · Posted: Sat Jul 31, 2010 3:14 pm Post subject:

it may be possible that the gains on the amp are set to high....another issue you may have...i would make sure the ground under the hood is also well grounded
_________________

***Under Construction*** GOT BOOST?

My for sale threads:
http://forum.2gn.org/viewtopic.php?t=52654

http://forum.2gn.org/viewtopic.php?t=47688

chris from Fl · Posted: Sun Aug 22, 2010 9:02 pm Post subject:

any kind of wire carrying a constant supply of power (direct current) will create a small magnetic field around it. If any signal wires cross over the power wires it can create a humming commonly known as alt whine. does the pitch of the whine change with the rpm of the car, or is it a constant frequency?
_________________
02 neon
1 15" Custom d2
orion 2500d
alpine cda-105
Jbl 75.4
Mb quart components

evilneon02 · Posted: Mon Aug 23, 2010 2:55 am Post subject:

yes the pitch changes with the rpm and it gets louder
_________________
Brad

http://www.cardomain.com/ride/2315103
http://streetracing.tiora.net/japan/drift/drift1.htm