WildPlumDx Posted April 27, 2010 Share Posted April 27, 2010 so just randomly after my ute came back from the panel beaters it gets this annoying sound that gets louder the more the turbo kicks in so was looking at stereo filters but not sure what one to get there 5amp 20amp etc, have pioneer HU and 600w sony 4ch amp ? Quote Link to comment Share on other sites More sharing options...
Simon Posted April 27, 2010 Share Posted April 27, 2010 so just randomly after my ute came back from the panel beaters it gets this annoying sound that gets louder the more the turbo kicks in so was looking at stereo filters but not sure what one to get there 5amp 20amp etc, have pioneer HU and 600w sony 4ch amp ? Wont be turbo related. More likely alternator / plug lead interference. They may have left an earth cable or something off? Quote Link to comment Share on other sites More sharing options...
WildPlumDx Posted April 27, 2010 Author Share Posted April 27, 2010 yeah i know not turbo related just picks up the whine and they never went near the alternator but i should check i guess Quote Link to comment Share on other sites More sharing options...
Simon Posted April 27, 2010 Share Posted April 27, 2010 yeah i know not turbo related just picks up the whine and they never went near the alternator but i should check i guess Where did they go near? The aerial? Quote Link to comment Share on other sites More sharing options...
WildPlumDx Posted April 27, 2010 Author Share Posted April 27, 2010 nah only did the left guard, aerial other side would the amp be crapping out ? Quote Link to comment Share on other sites More sharing options...
barf Posted April 28, 2010 Share Posted April 28, 2010 did they do any welding? they could have hurt some components in the power supply in the amp one way of treating this symptom is to add a decoupling capacitor to the power supply for the amp / radio. get the largest affordable value in Farad with insulation rating (volts) roughly twice the vehicle supply (13-14v means get a 25-30v cap). get electrolytic type, they are polar, pay attention to markings (or make cool smoke bombs). treating the cause is better, if you can find it. Quote Link to comment Share on other sites More sharing options...
WildPlumDx Posted April 28, 2010 Author Share Posted April 28, 2010 yes! they did weld the door and the amps under the seat next to it so that must be what it was then and what the heck did you just say ? post me a link of what the heck that is and i'll buy it Quote Link to comment Share on other sites More sharing options...
WildPlumDx Posted April 28, 2010 Author Share Posted April 28, 2010 also the buzzing is worse in the rear channels Quote Link to comment Share on other sites More sharing options...
thegreatestben Posted April 28, 2010 Share Posted April 28, 2010 Welding in cars can really fuck things like amps and ecu's. Quote Link to comment Share on other sites More sharing options...
barf Posted April 28, 2010 Share Posted April 28, 2010 here's some homework then http://en.wikipedia.org/wiki/Decoupling_capacitor http://en.wikipedia.org/wiki/Capacitor#Power_conditioning basically; just solder/connect the negative to a good earth and the positive to the power supply to the amp, i think there are some car-audiophile-type capacitors specifically designed for amp power supply decoupling but they are probably overpriced and just a capacitor anyway. PS> this may not help if your amp is toast Quote Link to comment Share on other sites More sharing options...
Hemi Posted April 28, 2010 Share Posted April 28, 2010 Welding in cars can really fuck things like amps and ecu's. ypu yup . ca ecu if happy as larry but my last amp got an awesome imitation bird thing going on after i migged up a tiny hole in the 910's gaurd . yuh i should know better then that etc . Quote Link to comment Share on other sites More sharing options...
WildPlumDx Posted April 28, 2010 Author Share Posted April 28, 2010 ok cool where do you buy them from ? also its just a sony 600w amp u can get em for 60bux off trade me would it be cheaper to buy a new one ? Quote Link to comment Share on other sites More sharing options...
barf Posted April 29, 2010 Share Posted April 29, 2010 a cap will be $2 max from Jaycar, Dick Smith and et cetera Quote Link to comment Share on other sites More sharing options...
WildPlumDx Posted April 29, 2010 Author Share Posted April 29, 2010 so i need this thing ? http://www.dse.co.nz/dse.shop/4bd928de0 ... View/R5454 Quote Link to comment Share on other sites More sharing options...
barf Posted April 30, 2010 Share Posted April 30, 2010 yep, the more farads the better. there is a marking for the negative wire only, install it as close to the amp as possible, it should even fit into the connector on the amp if you bend and shorten the legs a little. bear in mind this won't help if the FETs in the amp are toast, which they could be if the damage was done by welding. Quote Link to comment Share on other sites More sharing options...
R100 Posted April 30, 2010 Share Posted April 30, 2010 If it wasnt buzzing befor you took it to the panel beater and it is since you came back it could be faulty rca leads or a bad earth. The first thing i would check is the earth on the amp. Is it good ? is it still attached ? Where is it earthed too ? If the earth on the amp is removed or not very good, the amp with earth itself through the rca leads back up to the head deck and earth out through the head deck wiring. This will cause buzzing in your speakers. Is the amp connected to the rear speakers only ? or front and rear ? Quote Link to comment Share on other sites More sharing options...
WildPlumDx Posted April 30, 2010 Author Share Posted April 30, 2010 oooh so i dont have to open the amp up ? so you mean put the pos leg on the pos of the amp and the neg leg on the negative of the amp ? seriously your explaining this to a noob electrical person also r100 its earthed under the seat to the chassis next to the amp, just sanded the paint off and ive checked all this and its fine plus the amp has all the speakers wired through it so don't think its that, would be nice to try it in someone else car Quote Link to comment Share on other sites More sharing options...
barf Posted April 30, 2010 Share Posted April 30, 2010 you got it right, just put it onto the wires that power the amp! Quote Link to comment Share on other sites More sharing options...
R100 Posted April 30, 2010 Share Posted April 30, 2010 Finding whats causing the buzzing noise can be just trial and error. Make sure your head deck is earthed properly also. The biggest cause of engine noise "buzzing" is from bad earths or cheap unbranded amplifiers. You could always try your amp in someone elses car. If it still makes the speakers buzz then at least you have narrowed down your problem. Quote Link to comment Share on other sites More sharing options...
WildPlumDx Posted May 2, 2010 Author Share Posted May 2, 2010 ok dse dont have any so i went on jay car and got mega confused they have like 100's of em little suckers so question can someone be kind enough to jump on jaycar and find me the right one Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.