Got a problem with my muziks...


When the car is on (and engine running) there is a buzzing noise coming from the rear speakers, which gets higher pitched when the car revvs harder.

When the car is on (engine off) it has a very faint whine but not a buzz..

When the car os only on ACC, its perfect, no problems.


The only thing i can think of is the RCA's or earth is "screwing up" somewhere...
Any ideas before i have to rip the carpet out of my car again???

Sounds like interference from the alternator - to me.

Check all power connections and ground connections. The grounding point should be clean and free of paint. Sand it down if you have to.

http://ezinearticles.com/?Car-Speaker-Noise----How-To-Eliminate-It&id=372120

as said above its alternator whine
best to recheck the grounds and make sure there nice thick cables
also add another ground from the battery to the chassy

the other type of noise is engine noise,
normally caused by the RCA cables too close to power cables

cheers, so at least i wont have to pull my carpet up.. (hopefully) thanks again!

As above, also make sure you have run the power and remote wire on one side (usually same side as battery) and rca cables on the other.

Owen, you may well need to.

Alternator wine and 'engine noise' are the same thing. There is always noise present in a cars electrical system, the alternator is not a true 'DC' power source, they are AC with the diode pack converting this to 'DC' power. Now as you rev your engine the amount of current (and as such noise) increases.

Several things can cause this, more than likely RCA's ran too close to power cables.

The next is the earth on the RCA breaking down, or being interrupted by corrosion build up on the connector itself (either on HU or amp).

Next would be a poor earth on your amps (possible, unlikely IMO).

Another possible cause is your diode pack starting to crap itself on the alternator (causes a larger voltage spike and as such more noise)

Another cause would be corrosion build up on the battery terminals, this increases the impendance of the charge circuit.

So first check your battery, check body-earth strap (on the battery itself, it goes below the battery box).

Then check your amp ground connections.

Then time to check your RCA's.

Atm I dont run the noise supressor on my alternator (little back box connected to D+ terminal and earthed on the alternator), and my RCA's run very close for long-ish lengths due to my install. I dont get any noise - Iridium RCA's are goddamn great and well priced. That would be my next move for you.

Think thats about it for now.

Oh as for your constant buzz. Is it the amp making the noise or the speakers?

If its the amp try turning off the headunit and quickly turning it back on again. If its the speakers you have one of two problems:

Speaker cable earthing somewhere.
Leaking capacitors inside the amp (time to either repair or replace amp).

Owen, you may well need to.

Alternator wine and 'engine noise' are the same thing. There is always noise present in a cars electrical system, the alternator is not a true 'DC' power source, they are AC with the diode pack converting this to 'DC' power. Now as you rev your engine the amount of current (and as such noise) increases.

Several things can cause this, more than likely RCA's ran too close to power cables.

The next is the earth on the RCA breaking down, or being interrupted by corrosion build up on the connector itself (either on HU or amp).

Next would be a poor earth on your amps (possible, unlikely IMO).

Another possible cause is your diode pack starting to crap itself on the alternator (causes a larger voltage spike and as such more noise)

Another cause would be corrosion build up on the battery terminals, this increases the impendance of the charge circuit.

So first check your battery, check body-earth strap (on the battery itself, it goes below the battery box).

Then check your amp ground connections.

Then time to check your RCA's.

Atm I dont run the noise supressor on my alternator (little back box connected to D+ terminal and earthed on the alternator), and my RCA's run very close for long-ish lengths due to my install. I dont get any noise - Iridium RCA's are goddamn great and well priced. That would be my next move for you.

Think thats about it for now.

Oh as for your constant buzz. Is it the amp making the noise or the speakers?

If its the amp try turning off the headunit and quickly turning it back on again. If its the speakers you have one of two problems:

Speaker cable earthing somewhere.
Leaking capacitors inside the amp (time to either repair or replace amp).

hmmm, its definately from the speakers... and unfortunately it definatly not the speaker cables... :(

Are you using crappy RCA's?

;1116306']Are you using crappy RCA's?

That too can cause noises......so yeah :tired:

i have the same thing, so thanks for the info guys, especially ers.
will go through it once i've fixed my install up and see if i can eliminate it. i think i have a bad build of on the battery, so that might be mine.

Good RCA's and a good amp helps things a lot regardless of where you run the cable physically. Amps have an input cap that filters the noise, generally the better the amp, the more filtering. I blew mine on the Audison, didn't change any cables and it was terrible, got it fixed and not a hint. Cheaper amps obviously won't filter as well. :kb: