Car Audio Woes

This is my amp by the way

IMG-20120218-00021.jpg
 
Left to right I have

Earth / Remote / +12V / Fuse / Left channel positive / Left Channel minus / Right Channel Positive / Riight Channel minus

Phono input cable goes in the other end.
 
Right I bought a new RCA cable and connected it up.

Still the same issue!

This is what my car is doing when my H.U. is muted. (My old amp/sub did exactly the same)

 
A bad earth will cause buzzing regardless of volumn. double check the earth connect and make sure it follows these guidelines as much as possible:

Q: Where should I ground my amp?

A: Your ground wire should be of the same gauge as your power wire and must make direct contact with the body of the car. Look for an existing bolt or screw that makes contact with the car body near the amp. Remove the bolt or screw, and scrape away any paint or grime.

A star washer will help your ground wire maintain solid contact with the car body. Use a ring terminal on the end of the ground wire, to keep it securely fastened to the bolt or screw.

If you can't find a convenient ground screw or bolt, drill a hole for one. Be careful not to drill into the gas tank, a gas line, or a brake line.

If you're grounding multiple components, try to ground each one separately, with about a half-inch of space between each of the grounding points. If you'd rather use a single bolt, place the ground for the most current-hungry component (probably the biggest amp) closest to the body of the car. Put the ground for the component that draws the least current (probably the electronic crossover) on top.
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The only other thing I can add is make sure you use the closest suitable ground point possible.
 
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To check the amp, I would connect direct to the battery bridge off for the remote and connect an RCA source to it, (like a cd player) and retest. Sometimes faulty amps are cause these problems.
 
Ace has changed the rca cable, the earthlead and the sub. The only things he hasn't checked as far as i can tell are the eart point itself....and the headunit. It's unlikely two different amps have developed the same fault (he said the old amp and sub did the same thing), but it could well be the HU that's developed a faulty output.
 
Right, I connected an RCA to 3.5mm jack and plugged that into my mobile phone and not buzzing and just played the bass from the track I started played.

I have since plugged in the new RCA cable from my H.U to my amp and still the same issue, but when I unplug the RCA cable from the back of the H.U. the buzzing noise stops.

 
I dont have any speakers which have a removable input cable. I need a speaker with a female 3.5mm port.
 
Ace Modder said:
Yes, a ginger guy there.... he told me it would be the remote and power cable being all wired on the passenger side. I asked him if he would mind taking a look at my car as he had no other customers, but he declined saying "its what I said" after I told him the symptoms. Never going to that place again. Halfrauds are better and that is saying something.

I will be buying a decent set of RCAs tomorrow and fitting them to my car! :)
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They are tards mate, "Haribo" who served you is a bit too up himself for his own good lol.

I won't use them after they reported me to Vibe for selling stuff cheaper than they can buy it!

Could be a faulty earth tract inside the HU then if the RCA cables aint solved it. It's not a Pioneer is it? Have you a mate who you can borrow his HU to hook up quickly?
 
It is a Pioneer, I have a DEH-5000UB. Yes, my mate at work is bringing in a spare cheapy H.U. he has for me to test.

What made you think I had Pioneer.
 
I aint no electrical genius but it was quite common for them to have issues with bad earthing/soldering to earth points inside, it may be fixable I aint sure... www.talkaudio.co.uk is the place to ask :)

Saying that I always buy Pioneer myself lol
 
I partially agree with james.miller's assessment, but I don't see how it could be the head unit if it's only happening on the sub woofer channel and he has one pair of RCAs going from head unit to amp. Surely if the HU was faulty, he'd be noticing buzzing over the front channels also.

My guess is the amp's earth point is incorrect or causing a ground loop between the amp and the head unit's earth. It's the only thing that's common between the two scenarios.

I'd move the amp's earth point to somewhere else and see if the noise at least changes.
 
Robbie G said:
I partially agree with james.miller's assessment, but I don't see how it could be the head unit if it's only happening on the sub woofer channel and he has one pair of RCAs going from head unit to amp. Surely if the HU was faulty, he'd be noticing buzzing over the front channels also.
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if the head unit had an earth fault then yeah, but I ruled that out because the HU otherwise seems to operate normally, that's why I'm thinking faulty output rather than the HU itself having a ground issue. I agree with the rest of your post, Ace you must check that earth point and like Robbie said you can try moving it as well - the HU and earthpoint are the only two common factors left unchecked :)
 
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Hmmmm


Just tried a H.U. my mate has spare. Same issue!

So I have replaced my amp/sub, the earth cable, the RCA cables, the Headunit. I had some 17 amp fuse wire in my tool box so I tried that for the remote cable, that didnt help.

Only 1 cable left, but I'm at a loss how that could affect it.. the power cable from the battery. I dont have any cable thick enough to try at the moment.

If it is the power cable, I will be shocked. Mind you on my battery where the cable is connected to the terminal of the battery there is a large build up of powdery dust like material, could this be a cause?
 
The dust is not unusual on car batteries over time (I speak having changed a lot of batteries in my student days as a halfords employee!, corrosion on the terminals and fumes from the battery can leave a white dusty deposit.

Changing the power cable can't hurt if its the only thing you haven't tried, use baking soda to clean up the terminals and ensure everything is clean and making a good connection when you change the cable.
 
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