help

[gilbert-furio]

right i had a smashed rear window last week had to wait a week 4 a new window so i took all my stero out to keep it safe, i gt my window fitted so i put my stero bck in put it how i had it before started my car up to set my sub up every time i turned my gain up my sub would go crazy its just about turned up my gain nw to gt my sub working a little bit i then put my amp in for my 6x9s and wired the up and they done the same left them off nw they run fine of my headunit i think im picking up interferance beacause my stero was gd last week iv tried new earth points iv got my power leads down one side rca cables down other side and remote lead away frm rca cables its starting to piss me off nw iv tried everthing i knw and when i put my foot down when im driveing im gting interferance to its when i use any thing in my car its pickin it up in my stero could any one help me please.

[Coonper]

It would be much easier to undertand if you used commas and full stops mate.

But what i think you are tyring to say, is...

You get interference through the sub?

It has to be an earthing issue mate. Make sure that where it is earthed to has a good solid bolt, and that the terminal is touching bare metal. So sand off any paint round the bolt. Also, keep the earth cable as short as possible and make sure you use a good thick cable.

[gilbert-furio]

iv earthed my amps to the same point as before, iv sanded down the metal to remove all the paint im usein very small screws, and my earth cables are no longer than 2 foot. Iv tried about 3 or 4 diffrent places to earth the amps to.

[Coonper]

iv earthed my amps to the same point as before, iv sanded down the metal to remove all the paint im usein very small screws, and my earth cables are no longer than 2 foot. Iv tried about 3 or 4 diffrent places to earth the amps to.

Well thats a bit odd, being as it worked before...

You could always try a ground loop isolator, but it really shouldnt be necessary tbh!

Check the earth on the battery and on the alternator. This could give you interference.

[gilbert-furio]

well my mate a had a quick look yestersay how many places in the engine bay would there be earth point, is there a earth point under the battary tray, we found 2 we could see one to the gear box houseing, and one on the head lamp driver siode.

[Coonper]

well my mate a had a quick look yestersay how many places in the engine bay would there be earth point, is there a earth point under the battary tray, we found 2 we could see one to the gear box houseing, and one on the head lamp driver siode.

Well you need to trace the wires back from the negative terminal on the battery, then the same from the alternator. Cant remember off the top of my head where they earth though...

P.S much easier to read;)

[gilbert-furio]

right goin to have a look now, negitive terminal is one on the right im thick when it comes to things like this, i basicley need to trace all the wires of that treminal.

was still asleep when i wrote the 1st masg buddy lol.:afro:

[Coonper]

right goin to have a look now, negitive terminal is one on the right im thick when it comes to things like this, i basicley need to trace all the wires of that treminal.

was still asleep when i wrote the 1st masg buddy lol.:afro:

The negative is the one with the - sign on the terminal:zainy:

[gilbert-furio]

well tried that got 2 cables comeing off my negitive treminal checked them thay seem ok, still gt the interfernce could it be a earth of my headunit my front speakers are fine they dnt gt any inerferance there runing off my head unit,its realy annoying nw lol.

[Coonper]

well tried that got 2 cables comeing off my negitive treminal checked them thay seem ok, still gt the interfernce could it be a earth of my headunit my front speakers are fine they dnt gt any inerferance there runing off my head unit,its realy annoying nw lol.

Well it is obviously something to do with the amp then, cus your fronts dont distort.

What gauge wiring have you got, and what gear?

[gilbert-furio]

iv got 2 basic 360 watt amp wiring kits from motor world 1 kit powering my mutant amp 2 channel x80rms, rca from that amp goin to my headunit,that amp powers my vibe slick 6x9s, then i have the 2nd amp wireing kit going to my JBL GTO 752 amp which powers my jbl gt5-12_12" 1100w sub.

[gilbert-furio]

im not sure on the gauge wire i know its only little was told its good enough for what i wana run, seems weird how it was fine a week ago .

[gilbert-furio]

i have found the problem, we tried two diffrent headunits last night both worked fine didnt pick up any interfernce, so looks like im afta a new headunit.

[Coonper]

Whats your current unit?

[gilbert-furio]

pioneer deh 30mp
only had it 6 months seems weird how it plays my front speakers perfect, but anything of a amp gets interfernce.

[Coonper]

pioneer deh 30mp
only had it 6 months seems weird how it plays my front speakers perfect, but anything of a amp gets interfernce.

That is odd! A good unit that is too! I used to have one till it broke! lol

Must be something to do with the preouts on the unit...

How have you got the crossover set??

[gilbert-furio]

what the crossover on the headunit, iv nt seen that on the unit.

[Coonper]

what the crossover on the headunit, iv nt seen that on the unit.

I cant remember if it has one or not tbh, but i would imagine it has, being as it has subwoofer control.

Not that it would give you interference mind...

Take it back, get your money back, or swap it for another one.

[gilbert-furio]

was x-display so dnt think i can:n:. i might buy a alpine headunit nxt week just use my headunit till then .

[Coonper]

was x-display so dnt think i can:n:. i might buy a alpine headunit nxt week just use my headunit till then .

It wasnt a managers special from argos was it? lol

Mine was, got it for £25, but then the display stopped working a week later!:P

[gilbert-furio]

ha ha nah was in halfords was 70 pound last one i think.

[Coonper]

ha ha nah was in halfords was 70 pound last one i think.

Well it will still be under warranty if its under 12 months old:y:

[gilbert-furio]

will go see what they say . what haed unit would u say is gd and i should buy, my mate has a alpine headunit it looks gd plus is very gd for his set up.

[Coonper]

will go see what they say . what haed unit would u say is gd and i should buy, my mate has a alpine headunit it looks gd plus is very gd for his set up.

Whats your budget mate?

[gilbert-furio]

about 150

[Coonper]

Id go with this...

http://www.caraudiodirect.co.uk/alpine-cde9882ri-p-6423.html