Here is the first example Enough said, you might not take offense to this but this person has no Idea of my knowledge. So if this was not intended to be sneid then why would he put a web addreess for auto electirc basic 101.

Mark

 

Ok here is your post, "you dont say" what does that mean its like an old cartoon saying from leg horn fog horn. It was a serious question on my part and I felt because I am a newbie on this site you weer trying to be funny. All I wanted was a straight answers. Then you make another comment I installed one amp to two subs your not going to hear noise the noise I hear with you application. If you did it would be so minimal you would not even notice it. Like I said I asked the question because I thought that there might be something out of the ordinary besides normal trouble shooting. I got my answer Finally something that was discovered before on this model. Read the post you may find it useful for the future.




Mark

 

that wasnt to be snied, if u search that site there is alot of info on why things do what they do. if i was gettin snied i would tell u sir..it was a short answer, i was breezin through some post before work, so i didnt explain myself. the site explains itself. it doesnt matter what u kno, at some point everyone needs help. so u misunderstood sir.. sooooo sensitive..lol

 

is'nt it funny the two guys that posted the threads that did not come close to ansering my question. Once I call them out they are the ones that are sesative SIIIRRRR. well think What you want I came on these forms for information & clareification on problems that I can not resolve myself. So I think that the best remedy would be that if I see a post of yours I will ignore it. I hope you would do the same for my post. like I said there was a comment made By another bloger in this thread, after I made my first post referencing sneid remarks. He also took it as bashing the newbie a little that is whay I got out of it when I saw his post. So what ever, I am not a gray matter area guy I like to cut to the chase. Here is my problem is there something that I am missing or is there something special to this 08 f150 modle model.


Reguards

mark

 

, how is that, i dont know why ur bashing, obviosly u need a manpon, take it how you wish, i tried to clarify my post for you, i guess some are slower than others.

 

save it save it you will need it for the preacher. Your answer was self expanitory. So that is how I interpret your post, get over it.Move on to anther thread you are just beating this one up for no reason. I don't need an explanation on it. You have your views on things and I have mine. So be it, I got the info I needed so now I will be moving on.

Regards

Mark

 

Did the grounds fix it?

 

I have not been able to get to it yet, but I will update as soon as I get it done again thanks for the tip It is greatly appreciated.


Mark

 

here is this better................
Chassis Ground:
If you've ever installed a car audio system with multiple amplifiers, and signal processors (eqs and or crossovers), you've more than likely had to deal with noise. Noise is generally caused by ground loops (2 or more paths for the ground connection). This is why virtually all audio manufacturers have the audio shield ground (reference) isolated in some way from the chassis (power) ground for that particular device. In this section, I will try to explain why the audio shield ground must be isolated from the power source ground. In following sections I will explain the different ways to isolate the grounds.

OK, the first thing to remember is that all conductors have resistance. This includes the chassis of your car. Also remember that to measure anything, you need a reference and anything that has some sort of output will have a reference as one of it's output terminals. In car audio, the reference is the "shield" of the RCA cables. I know that some audio systems use DIN or mini DIN connectors but in the USA the RCA style connectors are by_far the most popular, so I will refer to the audio transmission cables/connectors as RCA type cables/connectors. You should also remember that amplifiers and other signal processors amplify the audio signal AND amplify any error that may occur in the signal transmission. The error is usually in the ground path.

First, of course, we have a signal source. If it is an indash radio, the case (outer metallic shell) of the radio is electrically connected to the chassis of the vehicle at it's point of mounting. If the radio is mounted in plastic , the radio's ground wire will make the connection to the chassis. Realize that the ground wire of the radio and the shield of RCA cable are connected together inside of the radio. I know that some radios have some sort of isolation between the radio's case and the audio ground but most are connected directly to the case of the radio. The only exceptions that I know of are the head units with balanced outputs through RCA jacks.

Now, let's say that we have to send the signal to the rear of the vehicle (to an amplifier, let's say). Remember that the metal chassis of the vehicle has resistance and if we have current flowing through any conductor with resistance, there must be a difference of potential (voltage) from one end of that conductor (in this case, the chassis of the vehicle) to the other. This means that there is a difference of voltage between the grounding point of the radio (reference for audio signal source), and the mounting/grounding point for the amplifier (probably in the trunk). To complicate things, the current flowing through the chassis, is constantly changing. The chassis provides the return path (to the battery) for turn signals, brake lights, amplifier(s), fans, windshield wipers... Well, you get the idea. Now you can probably see that the difference of voltage from one end of the chassis to the other, isn't going to be constant because the current from all of those accessories is not going to be constant. This is why the audio signal has to have a dedicated reference connection. If the audio signal is sent to the rear of the vehicle, without the reference, and the amplifier (in the trunk) uses the chassis for the audio reference, the amplifier would not be getting an accurate (clean) signal and would therefore be amplifying a distorted/noisy signal. The actual input signal of the amplifier would be the audio signal plus or minus the voltage difference in the chassis between the mounting positions of the radio and the amplifier. When an amplifier isolates its signal input ground connection from chassis ground, and uses the RCA shield coming from the signal source, it does not have the error which would otherwise distort the signal. Since an amplifier may amplify the signal 100 times its original level, any noise added to the audio signal will be a serious problem.

ur vast knowledge just improved

 

this is why 1. i sent the link. any one else would have appreciated it.
2. amp or rca was my other response. didnt know it had to broken down for you.
3. you stated your grounds were good, they sounded good, so whatever.
4. it is guys like you that trash forums. now i am being snied. do you see the difference?
5. this is a truck forum, not general hospital, ive been here awhile never do i talk bad to people unless they ask for it.

 

i know im a couple days late here but i think you misinterpreted what windsor was saying. ill rephrase it to how i thought it was meant. you didn't say what application or year model you're working with. hopefully that will clear the air on that.

the only noise issue i ever had in mine turned out to be a bad plug on the cd players wiring harness, but it didnt increase with rpms. i could turn the sub off via the cd player (the amp would stay on) and i could still hear noise in my subs.

 

Fixed

 

lol

 

that is great, sall, another kick in the face...funny...this post needed some humor,

 

Exactly! I don't get the analogy with Foghorn Leghorn, or what slight could have been misconstrued, but it was intended as a simple question. Maybe it just takes a Texan to understand a Cajun.

Ford has been building F series pickups since 1948. Unless it's in your signature, how are we to know what year and model truck the question is intended? But, I didn't feel inclined to respond, much less help, after that exchange.