PDA

View Full Version : whine whine whine ... SHUT THE F@RK UP!! - Help


Nate
26-05-2005, 10:45 PM
i just bought a new 'audioline' 4 X 200 channel ampilfier, heaps of features (twin crossovers, bass boost, treble boost, rah rah rah) from JB HiFi - normally $220 ... got it for $160 :D :D ...

Anyway,

The gear >>

front - 2 x 2 way 6 inch
back - 2 x 2 way 6x9's
subs - 2 x 12 inch
amp - 4 x 200

The setup >>

I have my two subs running off a channel each (bass boost up :D), and my front speakers running off the other two channels (midrange on, treble up:D), rears are running off the headunit, headunit is powered off the stock loom, amp is earthed out thru the chassis.

The Problem >>

My new found power (feel the power!) has resulted in a terrible whining noise when the engine is running, like an interference, engine off the system is loud and crisp, buckets full of bass, no worries! but as soon as i turn the key ... wwwwwwwwwwwwwwwwwwwwwiiiiiiiiiiiiiiiiiiiiiiiiiiiii iiiiiiiiiiiiiizzzzzzzzzzzzzzzzzzzzzzzzzz

Any help?

proper eathing kit?? (i know it will help anyway but is it causing the noise)
filter??

-BraXta-
26-05-2005, 10:57 PM
This might be what your lookin for (http://www1.jaycar.com.au/productView.asp?ID=AA3072&CATID=24&keywords=&SPECIAL=&form=CAT&ProdCodeOnly=&Keyword1=&Keyword2=&pageNumber=&priceMin=&priceMax=&SUBCATID=563)

=D

Or

This one for a Amplifiered Stereo (http://www1.jaycar.com.au/productView.asp?ID=AA3076&CATID=24&keywords=&SPECIAL=&form=CAT&ProdCodeOnly=&Keyword1=&Keyword2=&pageNumber=&priceMin=&priceMax=&SUBCATID=563)

twilightprotege
27-05-2005, 06:05 AM
hmmmm.....4x200 - bet hy life, house, connor, car that's not wRMS

and the noise is more than likely coming from your alternator. how close are the wires for the power and speaker?

Nate
27-05-2005, 07:36 AM
lol, no its deffinatly not RMS, if it was my speakers would blow :p!

anyway as far as i can see the alternator is on the outherside of the engine, wire does go kinda past the dizzy tho ...

twilightprotege
27-05-2005, 07:49 AM
was referring to wires inside the car going to the amp and speakers ya wally!

Nate
27-05-2005, 07:59 AM
ohh ... i got ya ... whoops ... i can see where you are getting at ... back to the car ...

Nate
27-05-2005, 08:28 AM
hmmm im thinking speaker wires down the outside and power down the console. i have had to overcome this probelm before but couldnt for the life of me remember how to do it!

twilightprotege
27-05-2005, 08:53 AM
yeah have to put the speaker wires as far away as possible to other wires. i get a good whine when i adjust the side mirrors, but i cant help that

-BraXta-
27-05-2005, 04:38 PM
*points back 2 what i posted ... The links.. .click the links =P

mrpayner
27-05-2005, 04:47 PM
Try to get your earthing cable close or in with other earthing points.. This was the advice that my Alpine amp booklet gave when i was reading up.. make sure the earthing cable is roughly the same guage as power as well.. just to be on the safe side.

I still need to get mine all sorted out.. :(

AP

Nate
28-05-2005, 10:58 AM
*points back 2 what i posted ... The links.. .click the links =P

lol thanks mate ;)

i have tired everyhting i can think of and the noise is still there. currently i have my RCA's and speaker wire running down the passenger floor sill and amp power down the center consol ... i am off to jaycar now to get a decent set of + and - cables for my amp and a filter < look braxta!! :eek: :D

-BraXta-
29-05-2005, 10:16 PM
ahhh very good *pats nate on head*

if they are nice blokes like the ones near my house they will test it first and see if it will work and if it doesnt they wont sell it to ya =P

Lol... i gotto get one for mine... but i think its my crossover .. .but not sure... maybe ill just buy one and see =P

Mazda_Brian
15-06-2005, 07:07 AM
Nate, shorten your Grounding lead, make it as short as humanly possible, if you have to, carefully drill a hole in the closest metal thing to the Amp, and ground it to that with a monster bolt.

Also, you will have RCA leads from the headunit to the Amp, make sure your RCA leads dont follow the same path as the power leads to your Amp, I usually do Power down the console, under the carpet, under the seat, and up to the Amp, RCA through the left or right cable ducting.

Also, the noise might be coming fromt he headunit, so do the same thing with the earthing of the head unit, solder it to something metal about 15cm away from where it's mounted, and also make sure your power leads from the headunit dont get close to your speaker/RCA leads (if they have to cross, cross them at direct 90 degree angle, because it will create less interference).

If you have stupidly long RCA leads, DONT coile them up, this creates induction current, which will also cause issues.

Failing all this, you can get an Areo filter, which will fix the issue.

B.

Nate
15-06-2005, 10:10 AM
its all good now ... a wiring expedition resulted in the death of my headunit. so i now have the stock headunit wired up with an amp powering the front speakers and sub. because its the stock head unit i had to use the hi input wires (as opposed to the RCA's) which have an earth wire and 4 speaker wires. the earth wire is there to stop interference. when i hooked up the earth wire i get the wiiizzz, when its discontect it no wizz. go figure