Pirate 4x4 banner

1 - 20 of 23 Posts

·
Registered
Joined
·
167 Posts
Discussion Starter #1
Ok,

I went and bought to amp wireing kits that are 8 guage, took my time and did a very damb good job wireing the amps up. I then went and bought ther best RCA cables the the stereo store had. I ran them on the opposite side of my stereo. I HAVE SO MUCH FUCKING ENGINE NOISE ITS NOT FUNNY!! What the hell is my problem?? I even installed one of those Radio Shack noise killers and it did absolutely nothing. The subs dont have noise but the speaker in the doors do. They are hooked up to a kenwood amp. What the hell is my problem?? Please help
 

·
Registered
Joined
·
94 Posts
what is your problem? You want to solve engine noise...or your subs don't have anything? If the subs don't work and you get a whine from them...check the fuses
 

·
Registered
Joined
·
167 Posts
Discussion Starter #3
I want to solve the engine noise.
 

·
Registered
Joined
·
35 Posts
i think your noise is probably due to a lack of sheilding on your alternator which is creating a current in your wires. call a car stereo shop and see what they recomend
 

·
Registered
Joined
·
3,010 Posts
do you have a high power distributer on it?
like for your plugs and wires?

that totally screws up your sterio. how are your grounds. if they arn't good it screws it up and blows your amp a lot! <IMG SRC="smilies/emb.gif" border="0">
 

·
Registered
Joined
·
167 Posts
Discussion Starter #6
no aftermaerket distributor and the grounds are alright. The thing is it only comes out of the Kenwwod amp to the door speakers, I dont here it out of the subs, but maybe that just because I have them on bass only. Its really pissing me off.
 

·
Cranky Moderator
Joined
·
7,366 Posts
Is the noise altenator whine?

If yes, did you run the RCA's and the 8ga next to each other? This will cause the problem you describe.

If I am right, the cure is to run the RCA's and the power and ground lines as far apart as possible, IE, one run down the passenger side, one down the drivers side. Near the amp if they must cross, make sure they are NOT in parallel.
 

·
Banned
Joined
·
66,825 Posts
Dude, i hope this helps. First, Kenwood amps, uhh, SUCK! Secondly, you need to terminate ALL of your grounds together, so as to not cause a "ground loop". Thirdly, place a "noise-choke" (any inductor) @ the Kenwoods 12v input itself. And last? Make positively sure (see #2) that your ground wire is no longer than 18", and is of LARGER guage wire than the 12v positive lead, ok?
 

·
Registered
Joined
·
15 Posts
Allrighty here goes.

I have an 87, with stock alternator and MSD wires and I have no noise due to alternator or ignition spark. Unless you have an extremely cheap aftermarket alternator, the stock one has sufficient shielding to not allow the whine into a properly working stereo. Alternator whine is almost always curable with stereo changes, not alternator changes. I've had 4 different makes of cars, and 2 had bad alternator whine (one Ford, one Nissan ) and both were solved with component changes and wiring corrections.

When I worked at AVU (Audio Video Unlimited here in Canada) we come across many factors that can cause these problems. Without knowing specifics its very hard to tell what could be wrong. Here's what can help. I need the model# of the head unit your using, any crossover, and the amp. Also the brand and length of RCA's. We found that certain brands, and models of RCA's/amps/processor's are just inherently bad at rejecting ambient noise. For instance, AudioControl. They make a great product, but have very little noise rejection, so in most Fords they cause terrible whine.

Is your amp and older one? Heavily used and older amps are especially prone to allowing noise into a system. Over time, the heating and cooling of the filtering components within the amp change the component tolerances, caps/inductors will vary more and band reject filters on the imput will become more relaxed and will allow more signals into the amp. This is a very probable cause, especially if I followed your outline correctly in that you have a seperate amp the powers the sub, and it has no noise problems. What make/model of amp is that? Newer than the Kenwood?

If your using an outboard 2 or 3 way crossover, try bypassing it and running an RCA set directly to the problem amp and run the fronts full range and see if the noise is still there. Move down the line like that. Especially try disconnecting the RCA's alltogether from the amp and run the car, with the amp powered up and no signal, the speakers should be queit, if not, its defentily an amp problem. If not, try moving the RCA's and try hooking the amp up in a couple of different spots. Make sure the ground is very clean and short. You could also switch amps, hook the functioning sub amp (with a fullrange out) to the fronts and see if the whine is there. You could also hook the Kenwood to the sub, the whine if high in the frequenct spectrum, might get filtered out if you have the crossover low enough, then you could jsut run the amp on the sub.

Sometimes you might not be able to do much, just might have to bite the bullit and try a different amp. If you have a buddy with a functioning queit system, you could also throw your amp in really quick and see what happens.

Post the info of model#'s and I can see if any of the units you run are notorious for noise.

Hope something in there helps.

Ryan <IMG SRC="smilies/clown.gif" border="0">
 

·
Registered
Joined
·
853 Posts
That's a very good troubleshooting plan. The previous one about a short, heavy guage ground is a good idea too. After all, how much does wire cost? The low level signal with RCA terminations should be away from any high power devices or wires. High power signals can be induced on to low level wires.
 

·
Registered
Joined
·
167 Posts
Discussion Starter #11
ground wire is short, they are grounded in the same spot, it is a wine, whenever I step on the gas it goes upo like weeeeeeeee. Its pretty loud. I will try to get the model number and all of that stuff for you. Thanks a lot.
 

·
Banned
Joined
·
66,825 Posts
yeah......BigRedToy said it all.... he EVEN found a nice way to say.......KENWOODS-SUCK
 

·
Banned
Joined
·
66,825 Posts
Damn, forgot one more thing... i've been installing for almost twenty years, i never trusted anything from Tandy, as it is at best - mediocre. Swap 'n' replace TEST, until the problem disappears, then you know which is the faulty unit, hey BigRedToy? I didnt know AudioControl made noisy gear?
 

·
Registered
Joined
·
3,010 Posts
Originally posted by Fullsize Toy:
<STRONG>ground wire is short, they are grounded in the same spot, it is a wine, whenever I step on the gas it goes upo like weeeeeeeee. Its pretty loud. I will try to get the model number and all of that stuff for you. Thanks a lot.</STRONG>
first car did that. man it really pissed me off. and it was only the mids and highs that would do it. not the sub. i never did get rid of the noise until i got rid of the car! <IMG SRC="smilies/crybaby2.gif" border="0">
 

·
Registered
Joined
·
15 Posts
Audiocontrol stuff isn't itself noisy, but it is very picky. I have had 50/50 success with new and used units in a variety of cars. Some are terrible, and others are fine. Its all just the wrong combination that does it.

For instance, until recently my personal truck stereo was a mess, signal/power wires crossing and grouped in bunches everywhere, and I didn't even get a hint of noise.
 

·
Registered
Joined
·
3,383 Posts
You don't have the gain on the amp turned up to try and gain loudness do you? This is an obvious one before you go changing components. Having all the components grounded to one source is essential too as previously mentioned. It's hit and miss a lot of times. My power and RCA's are right next to each other, no noise. Other cars I've had grounding to a common point solved the problem.
Good luck, I'm suprised you haven't been flamed yet with this post!
 

·
Registered
Joined
·
167 Posts
Discussion Starter #17
what do you meen flamed?? I need help. Everything seemed to be working at one point. Do you think that it is my deck?? I cut the ground wire and grounded it real close, I ran the power straight to the better, the noise is a little quieyer but not a lot.

should I take the deck out of my car and put it in my truck? Swap them??
Its only on highs not lows
 

·
Registered
Joined
·
15 Posts
So did you try unplugging the RCA's from the amp and turning everything on? If there is a whine still its amp related. If not, it could be the RCA's picking it up, and if it is, try unplugging them at the deck, and if the noise is gone, its either the deck or the RCA's, in which case I would suggest trying the noise choke you purchased on the head units power line. Could help.

I think he's just referring to this being a more general problem, but I think your fine posting it here, its in a Toy, and certain Toy owners might know something about where noise is caused in the vehicles, so don't worry about it. Posting anything but WTC related material in General right now won't get you any help either.

Any model numbers yet? Also the RCA brand, model and length.

Oh forgot! If the whine is above the low-pass crossover frequency of your sub amp, it will just be supressed with the rest of the high frequency signals. Try changing the crossover setting, or turn it off temporarily to the sub, and if the noise comes through the sub, its RCA's or deck problems.

[ 09-12-2001: Message edited by: BigRedToy ]
 

·
Registered
Joined
·
167 Posts
Discussion Starter #19
I throught the noise filter in there for a while and it go t a little bit better but no that much. When I un hook the RCA's there is no engine noise. When I hook the subs up to hi pass were there is just voice it makes the noise. So at this point im figureing that it is the deck??
 

·
Banned
Joined
·
66,825 Posts
What kind of deck is it?
 
1 - 20 of 23 Posts
Top