Ah great now I have interference! - DFWstangs Forums
 
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post #1 of 11 (permalink) Old 09-25-2001, 01:32 PM Thread Starter
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Angry Ah great now I have interference!

This is only when the car is on not off, so I guess a ground may be loose. It'd be nice to know before going off on a wild goose chase

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post #2 of 11 (permalink) Old 09-27-2001, 07:08 AM
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Some times your MSD box can make ALOT of raido noise if you dont have it hooked up right.
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post #3 of 11 (permalink) Old 09-27-2001, 10:03 PM Thread Starter
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It appears in order, both the 6AL and the 8975 retard box. Should I just check the wiring or...?

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"It is not what he has which directly expresses the worth of a man, but what he is."- Henri Frederic Amiel

'88 F150, '01 Z71, '85 BMW 745i Turbo,
'79 280S Benz, '85 300SD Benz, '86 420SEL Benz, '87 300SDL Benz
(severely in need of updating, around 14 vehicle current)

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post #4 of 11 (permalink) Old 09-28-2001, 08:50 AM
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If all the wires are right on your boom and msd,
another possibility is that you have your rca's run too close to power or ground wire.
The way you can tell is if you have sub noise but the speakers that are hooked directally up to the raido.........
I always run the power wire on the same side of the battery and rca on the opposite with no more than 2 feet of ground cable..
Check for frays in the wires....
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post #5 of 11 (permalink) Old 09-28-2001, 11:30 AM Thread Starter
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My RCA's are 3' long. The preouts are now in the trunk b/c of the DSP. Ummm, think I should hold the RCA's up from the ground wires?

Living, the only thing worth dying for.

"It is not what he has which directly expresses the worth of a man, but what he is."- Henri Frederic Amiel

'88 F150, '01 Z71, '85 BMW 745i Turbo,
'79 280S Benz, '85 300SD Benz, '86 420SEL Benz, '87 300SDL Benz
(severely in need of updating, around 14 vehicle current)

I have red hair
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post #6 of 11 (permalink) Old 09-29-2001, 09:49 AM
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The RCA's cannot be within 24'' from either the ground or power wires......Also you should have a wire similar in size to you turn on lead running from the ground on the amp to the ground that the receiver is using that way you have a parallel ground at that helps reduce interference, also what kind of ground and power wire are you using because I have had probelms with interference when I used a crappy brand of wire. Plus your radio could be the piece of equipment that is picking up the interference. Let me if you have any more questions.
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post #7 of 11 (permalink) Old 09-29-2001, 09:54 AM
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Also forgot to mention that your RCA cables could have a pinch in the insulation and that causes them to pick up pink noise (interference).
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post #8 of 11 (permalink) Old 10-01-2001, 02:28 PM
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i once had that problem but i fixed it... by buying a new amp. The amp just was gettin outta shape. It could also be that you dont have a solid ground, or what all those other peeps said. ;-)
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post #9 of 11 (permalink) Old 10-01-2001, 03:56 PM Thread Starter
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I have Phoenix Gold wiring.
How whould the head unit pick up interference? Remeber this only happens when the car is on too.

Living, the only thing worth dying for.

"It is not what he has which directly expresses the worth of a man, but what he is."- Henri Frederic Amiel

'88 F150, '01 Z71, '85 BMW 745i Turbo,
'79 280S Benz, '85 300SD Benz, '86 420SEL Benz, '87 300SDL Benz
(severely in need of updating, around 14 vehicle current)

I have red hair
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post #10 of 11 (permalink) Old 10-02-2001, 07:09 AM
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it really sounds like an ignition feed back noise.
They have filters but it wont help if its comming from your msd.
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post #11 of 11 (permalink) Old 10-02-2001, 02:04 PM Thread Starter
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I also hear a bit of alternator whine too...
Think I should try a filter?

Living, the only thing worth dying for.

"It is not what he has which directly expresses the worth of a man, but what he is."- Henri Frederic Amiel

'88 F150, '01 Z71, '85 BMW 745i Turbo,
'79 280S Benz, '85 300SD Benz, '86 420SEL Benz, '87 300SDL Benz
(severely in need of updating, around 14 vehicle current)

I have red hair
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