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Go Back   WakeWorld > >> Boats, Accessories & Tow Vehicles Archive > Archive through October 28, 2007

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Old    Adam Curtis (acurtis_ttu)      Join Date: May 2004       09-13-2007, 12:34 PM Reply   
Grant , I guess to clarify, I have alt. whine as well as all kinds of noises ( high pitched tone, relay's clicking, pulsing sounds) when I turn the key to the acc. position ( boat not running) . I haev totally isolated my stereo system---all power/grounds/switched power..everything back to one battery not even connected to the starter/engine block...still get the same noises.

Like mentioned earlier, I get noise thru a portable am/fm radio if you set it in my engine compartment.

When I first installed everything I had no nosie issues the way it was wired, then took it in for my 20/50 hour service and now I have all these issues.
Old    Adam Curtis (acurtis_ttu)      Join Date: May 2004       09-13-2007, 12:37 PM Reply   
Grant, I've had the whole system re-wired twice by two different shops. So it's not just my handy work.

And I never had any issues with noise with the wiring in my old boat



(Message edited by acurtis_ttu on September 13, 2007)
Old    Brandon Holmes (bmh2208)      Join Date: Apr 2004       09-13-2007, 12:40 PM Reply   
Have you tried to disconnect ALL wires from the alternator and then start the engine?

This would tell you if the noise is induced from the alternator. You could almost go so far as to remove the belt and get a shorter one to bypass the alternator all together.

This is all assuming that you only get the noise when the engine is running.
Old    Adam Curtis (acurtis_ttu)      Join Date: May 2004       09-13-2007, 12:40 PM Reply   
The wiring is very similar to this , I have since switched amps but the wiring stayed virutally the same, with the exception that all power wire was moved behind the amp board/rack.

This system also HAD no noise....everything looked identical when I recieved my boat back from service but with the horrible noise.

Upload

(Message edited by acurtis_ttu on September 13, 2007)
Old    Brandon Holmes (bmh2208)      Join Date: Apr 2004       09-13-2007, 12:55 PM Reply   
With your little radio, you can also see if the noise gets louder as you move around the engine compartment. Kind of use it like a stethoscope to see where the noise is the loudest and that component is what is most likely creating the noise.

BTW...I met you the other day at the island at Conroe. I was in the '03 Sante tied up with David that one afternoon with the 30 lifejackets inbetween our boats.
Old    882001 (882001)      Join Date: Nov 2003       09-13-2007, 3:31 PM Reply   
lets just fix it this weekend!
Old    David (tparider)      Join Date: Aug 2003       09-13-2007, 11:20 PM Reply   
Yo what's up Brandon...

Adam, I agree with Grant. Just pull everything out and put in about a half dozen of the Digital Designs monster 12" subs getting about 2000 watts a piece. Upgrade to a 500 amp alternator and put in 5 pairs of 6v golf cart batteries.

Your only problem at that point would be melting the gel coat off the sides of the boat from the sheer volume.
Old    David (tparider)      Join Date: Aug 2003       09-13-2007, 11:28 PM Reply   
brandon - where are the pics of the lifejackets all attached between our boats? That was funny as hell.
Old    Adam Curtis (acurtis_ttu)      Join Date: May 2004       09-19-2007, 11:53 AM Reply   
Just got back from a trip to the stereo shop where my boat is at now. I think they figured it out. It doesnt make sense to me, but at this point I dont care as long as the noise is gone. The head unit is bad, and is introducing noise. The reason I missed along with everyone else is whenever I disconnected the HU RCAs from the eqs and ran an ipod thru my eqs to the amps and still got noise I never disconnected the power/ground wires to the HU, just turned it off. I did the same thing when I ran RCAs from a friends trucks HU to my eqs. A few posts upI swapped out HUsfor another kenwood straight out of the box, identical to mine, and got the same noise. I never tried any other brand. This shop swapped it out using an alpine and eclipse deck and the noise almost completely went away. Or at least to the point I cant hear it. The tech on the boat said he could hear a faint tone if he got his ear right up on my speakers. That noise had already probably been there the whole time, who knows????

What I dont; get is why switching to a different brand of deck did this? After all my boat stereo worked flawlessly for the first two months using the kenwood deck?
Old    Clubmyke (clubmyke)      Join Date: Aug 2004       09-19-2007, 7:31 PM Reply   
no idea why... if you wanted to get techie.... i would suspect it is a impedence mismatch.

if you hear a faint tone with your ear up to the speaker then you have succeeded.
Old    Adam Curtis (acurtis_ttu)      Join Date: May 2004       09-19-2007, 7:36 PM Reply   
but why would it all of the sudden stop working the impedance didn't change overnite...it worked fine for two months.
Old    Adam Curtis (acurtis_ttu)      Join Date: May 2004       10-03-2007, 12:14 PM Reply   
The noise is back.......
Old    Brandon Raymond (big_brandon)      Join Date: Dec 2005       10-03-2007, 1:45 PM Reply   
Adam, did you change out the HU?? If so, did I hear you right, the noise is back?????
Old    shane k (blind)      Join Date: Jun 2006       10-03-2007, 1:54 PM Reply   
dieodes are bad in the alt.
Old    Brandon Holmes (bmh2208)      Join Date: Apr 2004       10-03-2007, 4:19 PM Reply   
I say you just take the belt assuming not serpentine off of the alternator or disconnect and see if it goes away. That would prove/disprove shane's theory.
Old    Aaron Ware (99_slaunch)      Join Date: Oct 2005       10-03-2007, 4:42 PM Reply   
It does it even with the motor off. I heard it on Friday. Adam sold me a sub for my boat. He made me a good deal. Thanks again Adam.
Old    Nacho (denverd1)      Join Date: May 2004       10-03-2007, 5:02 PM Reply   
I haven't read this whole thread. But...

What HU did you end up with? some head units have some noise reduction built into them. My Eclipse had one. Talk to the shop about using an eclipse deck.
Old    Nacho (denverd1)      Join Date: May 2004       10-03-2007, 5:07 PM Reply   
oh yea.. my truck started doing that crap a few months ago. my sub was acting up too. the shop stuck a signal converter on a door speaker and all that crap came loose. speaker wires grounded out on the metal. if any of your mids/highs have been touched, i would look at them too.
Old    shane k (blind)      Join Date: Jun 2006       10-03-2007, 7:03 PM Reply   
I did not read this whole saga, but I have seen a bad alt (dieodes leaking) cause some f-ed up things to go wrong with stuff like this. it's always the simple things. one more thing, be sure all your ground cables are making good conections. check and recheck

(Message edited by blind on October 03, 2007)
Old    "G" (grant_west)      Join Date: Jun 2005       10-03-2007, 7:06 PM Reply   
Is the alternator a stock alternator or aftermarket?

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