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slim
Dodge Dakota
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2/19/2004
20:36:23
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 Subject: problems
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ok, i got my subs in today, two kicker cvr 10 and a rf301s. i am having some problems. i get alot of very unwanted noise. it sounds like thunder. also, when i change tracks on a cd in thumps, and when i turn my truck off. it sounds very good loud but if i have it low you can hear that rumbling. it was really bad but i grounded it better. it got better but i can still hear it. somebody please help. thanks
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DSW
Dodge Dakota
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2/19/2004
21:23:07
|  RE: problems
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Make sure you have the power wire going to the battery + terminal with a fused 8 guage wire, the remote lead attached to the decks remote wire and the ground wire attached to a good ground with an 8 guage wire. The amp ground should also be in common with the decks ground (attached to the same place) or you could cause a groung loop, ground loops cause noise. Good spots for the ground location are a bare metal spot on the frame or to the battery - terminal. If you are grounding to the body metal you are relying on the factory body grounding, which might not be that good for a high current application. Also make sure your RCA's are in good condition and not pinched or pulled.
Walmart has a 300W amp kit for about $20. I used 2 of these for my amps and was realy impressed with the quality of the $20 kits.
I have the ground wires for both amps, deck and CD changer attached to the same place on the frame. It was a little work to get the ground wires to the ground location. Needed to drill a hole and run the ground wires through the floor under the drivers seat. Drill a hole in the frame and sand the paint off the frame by the hole and attach the ground wires to the bare metal of the frame with a 5/16 nut and bolt. To make sure I had a low resistence ground I also ran a 4 guage wire from the frame ground location to the battery - terminal.
I should add one thing. I connected the amp power wires to the ENGINE BAY fuse box battery connection. This keeps the amp wire ring terminal from getting corroded by battery acid. Think I had to get a bolt a little longer since I was attaching 2 additional connectors to the fuse box battery connection.
Is this a book or what, LOL
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slim
Dodge Dakota
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2/19/2004
23:25:04
| RE: problems
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im pretty sure it is the ground. i have my amp grounded to my drivers side seatbelt bolt, and my deck is grounded to the factory ground on the firewall. i breifly checked my rca's and they seamed fine. i used the walmart kit too, 8 guage wire with a 40 amp fuse. should i drill a hole in the floor by my amp and ground the amp to the frame, then run a wire from my deck to the same grounding point. or is it better to ground my amp to the negative battery teminal?
Also, my friend told me that all i needed to do was bye a ground noise filter that installs between the rca's and the amp, and that would solve the problem, could he be right?
slim
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DSW
Dodge Dakota
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2/20/2004
01:32:58
| RE: problems
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The noise filter is a band-aide fix that might not cure the problem. They are used to resolve ground loops and isolate noise, but if the amp's connected realy well you shouldn't need a noise filter.
Years ago, man am I dating myself, everyone put the amp power and ground to the battery, now amp MFG's are saying to ground to the frame. I did both, grounded to the frame and then the frame to the battery -. Guess they say ground to the frame so there is a low resistance ground. I installed 20-30 systems for friends and always grounded to the battery and never ran into a noise problem. What ever floats your boat I guess. My Dak was the first one I grounded to the frame. I was leary of the frame connection so I ran the 4 ga ground wire to the battery -. Figured it was easier to connect the 4 ga ground while I was under the truck, than to crawl under there again if there was ground problems.
Either way is probably going to work fine, grounded to the frame or battery. It's more than likely the seatbelt bolt ground is the problem.
Since the Wal-Mart kits only came with 4' of ground I had to find a direct path to the frame. The floor has a square crossmember that the seat bolts to in the front, this is where I popped the hole and routed the ground wires since the crossmember is pretty open. I measured from the outside of the truck to the inside of the frame and used this measurement to locate the hole in the floor/crossmember. With the hole in the proper location the ground wire dropped right next to the frame. The inside frame rail ended at this location also, so there was a great place to drill a hole and attach the ground wires.
You also want to run the deck ground wire to the frame ground. Spend $2 and get a 20' roll of 14 or 16 ga wire (Home Depot) and extend the deck ground to the frame grounding point. This will eliminate ground loops between the amp and deck. If you have another amp, EQ or CD changer, ground these to the frame ground location also.
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slim
Dodge Dakota
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2/20/2004
12:29:09
| RE: problems
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thanks DSW, i am going to do just what you did, i figure if you dont have noise than i shouldnt either.
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DSW
Dodge Dakota
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2/20/2004
15:20:54
| RE: problems
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Slim, try the frame ground, I think this will resolve your problems. If your going to go ahead with the additional frame to battery ground you only have to use an 8 ga wire. I needed to run a 4 ga wire since I had 2 - 8 ga and 2 -16 ga wires grounded at the frame.
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Eric
Dodge Dakota
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2/22/2004
18:43:43
| RE: problems
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Rule: Dont run your RCA cables next to your power cable.
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Levey
Dodge Dakota
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2/22/2004
20:44:37
| RE: problems
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You answered your own question...your amp is grounded to your seatbelt bolt...which is in no way a ground! Its secure, but not a ground. You must ground the amp to the frame, or an unpainted body part.
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slim
Dodge Dakota
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2/24/2004
16:56:25
| RE: problems
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eric, i ran the rca on one side of the truck and the power on the other, i knew that one.
i tried grounding it to the frame. i used a grinder to clean the frame to bare medal and bolted my ground wire to it and it was alot worse, it was nothing but thunder. so i put it back on my seatbelt bolt.
ok, with the ground still attached to the seatbelt bolt i hooked some jumper cables from the negative on the battery to the seatbelt bolt. nothing changed, i only get the noise when i am changing stations on the radio or changing tracks on a cd. also, when i song is paused it rumbles a little. could the problem be just that my amp and radio are not grounded to the same place. could i just ground my radio to the seatbelt bolt too, would that solve my problem? thanks
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Eric
Dodge Dakota
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2/24/2004
21:02:55
| RE: problems
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Sounds like you have a loose connection somewhere. Possibly speaker wire of defective subs/speakers.
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najee
Dodge Dakota
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2/19/2008
01:23:06
| RE: problems
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Message:
hi i think i am haveing simmaler probs i took my sub box oout
of my car to put carpet on it but i had to disconnect my amps
but when i was reconnecting them i touched the + to the - and
now when i rev my car all my speakers soundd like my
engine??????
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