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strange noise from amp
Posted: Mon Apr 27, 2009 2:23 pm
by kipper
got 2 problems.
first one is when i turn the radio on the amp makes a kinda thud noise when i first turn it on and also when i switch from radio to cd.
second is when the music is on the radio bakes a kinda buzzing noise that follows the pitch of the engine. if i got my music to quiet i can hear it but if its loud enough i cant. dont really bother me but would like to sort it.
other thing is how have people hiden the cables from the amp to the head unit?
Re: strange noise from amp
Posted: Mon Apr 27, 2009 10:53 pm
by MGrove03
First one is just your subs turning on. I think most amps cause that? (Mine does the same)
Second noise is what what they call alternator whine. Usually when you run your speaker and power cables up the same side of the car it causes interference. You can buy things to fix this though
Re: strange noise from amp
Posted: Tue Apr 28, 2009 5:34 pm
by kipper
i got the power cable running down the centre and the rest of the wires down the passenger side.
Re: strange noise from amp
Posted: Mon May 04, 2009 5:26 pm
by jezza
You need an alternator suppressor. Get them from halfords for around £3. Easy to fit. Will show you were they go.
Sonex86 wrote:im from billericay, near basildon. got a 6n polo in canon red.
so as promised, here's where i put my suppressor
the orange circle is the suppressor just hooked under a nut on the alternator to earth it, and the red circle is the live feed i had to use more cable as what i got was to short.
i also earthed my head unit too, as i was to believe that this could have something to do with it as well. i used to have it going straight to the battery but then read its not a good idea to have a long earth cable, as the more cable there is the further the current has to travel.
this is where i bolted the earth wire to, the hole is already there just behind the passager airbag/glovebox
so thats what i done, i still have a noise but you can only hear it when the volume is turned to zero, buts its quite faint, it doesnt bother me.
anyways heres a few sites that should help anyone else with the same problem
http://www.termpro.com/articles/noise.html
http://www.crutchfield.com/S-L3OMf9lVOC ... groupid=17
this one is ok but dont go on everything it says.
http://www.talkaudio.co.uk/vbb/showthread.php?p=1949352
well i hope this helps, let me now
Read this post for a little help
http://www.uk-polos.net/view ... 17&t=43552