calling mikeythemini or any one whos good with ice

[aid]

my loom is run down the passanger side of the car which i belive is the oppisite side from the stock mini power loom so dont think its that

still trying to solve it

[Loui]

Quote: Originally Posted by aid (original)

my loom is run down the passanger side of the car which i belive is the oppisite side from the stock mini power loom so dont think its that

still trying to solve it

My RCA`s are actually ran through tthe middle of the passenger side foot well

[aid]

that was one of my first thoughts

think this weekend im going to earth each of the amps ( i have 2 ) in diffrent places prob hex bolts in cubby holes in boot and i will also earth the headunit in a diffrent place as ive heard the stock earth is a bit c##p see if that helps next step is ground loop isolators (ive tried one before but going to double up) and try noise suppressors as well

[SiBradbury]

Quote: Originally Posted by aid (original)

that was one of my first thoughts

think this weekend im going to earth each of the amps ( i have 2 ) in diffrent places prob hex bolts in cubby holes in boot and i will also earth the headunit in a diffrent place as ive heard the stock earth is a bit c##p see if that helps next step is ground loop isolators (ive tried one before but going to double up) and try noise suppressors as well

How hard is it to earth the amp directly to the battery? (not familar with the loaction of the S battery)

Failing that, maybe try some higher quality RCA's? (Just route them straight thru the car first and see if that works)

[aid]

its really easy but thats not a recomemed earth so im not using it #

the rca's a pretty good quality auto-leads ones so i dont know that would help but its worth a try

[SiBradbury]

Quote: Originally Posted by aid (original)

its really easy but thats not a recomemed earth so im not using it #

the rca's a pretty good quality auto-leads ones so i dont know that would help but its worth a try

You can't get a better earth than that. At least it would serve to eliminate a bad earth as a cause.

Try your friendly neighbourhood car shop. Go there with your headunit ready to remove and ask them if you could try another set of RCA's to diagnose the problem. Its not like you'd have to route them under the carpet or anything, just go across the seats from front to back. I know i'd only be too happy to try that for one of my customers.

[aid]

ok so where is your shop????


our local guys up here in glasgow are a wee bit funny bout things like that, there is one shop i use but its a bit of a bam/ned tunning shop lots of plastic crap chrome and stick on power gagues that dont connect to anything ( i only buy cleaning products there) so i dont know if the guys would know what there talking about my best bet is just to buy more RCA's and do it myself

[SiBradbury]

Quote: Originally Posted by aid (original)

ok so where is your shop????


our local guys up here in glasgow are a wee bit funny bout things like that, there is one shop i use but its a bit of a bam/ned tunning shop lots of plastic crap chrome and stick on power gagues that dont connect to anything ( i only buy cleaning products there) so i dont know if the guys would know what there talking about my best bet is just to buy more RCA's and do it myself

We're in North Wales so even if I threw in a free cuppa it'd hardly be worth the journey! I was trying to find a way for you to avoid buying the RCA's until you KNEW they'd fix your probelm you see.

[GBMINI]

Actually earthing to the battery is not such a good idea.

Noise pick-up is due to voltage differences between "earth" at the amp, and "earth" at the head unit. In a perfect world you would connect both at exactly the same point, with zero length wire(!)

Using the car chassis as a "virtual earth" works OK because the car is a big mass of metal, with minimal voltage drop.
But the piece of wire between chassis and battery is likely to have some voltage drop, depending on current flow. So if the head unit is connected to one end of that wire (via car chassis) and the amp to the other end (directly to battery stud), you'll likely have worse noise pickup.


I certainly suggest running the RCAs down the middle of the car, to try - or get new wires and try them. Just lay them through the interior of the car, don't bother installing them - and see if the noise issue is improved. Just experiment initially to find where the noise comes from, then tidy the install later.
Another experiment is to temporarily run the head unit 0V with a thick wire from exactly the same point as the amp 0V/ground/earth - or even pick up a second wire from the 0V terminal on the amp.

[aid]

going to try to "borrow" a set of rca's and try running then through the car see if it helps but wont get that done till the weekend so ill post my update at that time

cheers all

ill get to the bottom of it eventually