Engine noise

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nexlvl

Member - Posts: 35

Joined: June 17, 2004

Location: United States

Posted: February 08, 2005 at 10:43 AM / IP Logged

I'm having trouble with engine noise in my 2004 dodge ram 1500. The systems compnonents are as follows:

Alpine 7998 hu

RF P3001 for subs

RF 500x for cab speakers

MTX Thunderforms with two 10 MTX 4500

This is a simple set up,but I just can't seem to find a good ground spot to eliminat engine noise any help or suggestions would be appreciated.

nexlvl

DYohn

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Joined: April 22, 2003

Location: Arizona, United States

Posted: February 08, 2005 at 10:49 AM / IP Logged

Is the "engine noise" in your subs or your mains? I assume you mean alternator whine?

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nexlvl

Member - Posts: 35

Joined: June 17, 2004

Location: United States

Posted: February 08, 2005 at 10:54 AM / IP Logged

Yse alternator whine it is louder in the morning after the vehicle has sat for the night

nexlvl

DYohn

Moderator - Posts: 10,741

Joined: April 22, 2003

Location: Arizona, United States

Posted: February 08, 2005 at 11:00 AM / IP Logged

In which speakers? All of them? Try running a dedicated ground for your head unit and not using the factory ground in the wiring harness.

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nexlvl

Member - Posts: 35

Joined: June 17, 2004

Location: United States

Posted: February 08, 2005 at 11:08 AM / IP Logged

I will try that. Any suggestions for the best grounding point.

nexlvl

Member - Posts: 35

Joined: June 17, 2004

Location: United States

Posted: February 08, 2005 at 2:57 PM / IP Logged

I tried a direct ground to the battery and the whine was actually worse.

nexlvl

supradude

Silver - Posts: 915

Joined: September 21, 2004

Location: South Carolina, United States

Posted: February 08, 2005 at 3:23 PM / IP Logged

Ground it close to the HU. Don't run the ground any longer than you have to.

'85 Toy

nexlvl

Member - Posts: 35

Joined: June 17, 2004

Location: United States

Posted: February 08, 2005 at 3:30 PM / IP Logged

Would the metal frame near the hu be suffficient?

nexlvl

audifive

Copper - Posts: 89

Joined: June 02, 2004

Location: United States

Posted: February 08, 2005 at 3:34 PM / IP Logged

it helps to splice into a clean constant 12+ for head unit power too. i had noise probs too and that alone made the most difference. then i grounded the head unit at the amp's ground. that helped a whole lot more. then i rerouted my rca's to be no where near the 4 ga power i have at my sub amp and i have no more noise at all.

nexlvl

Member - Posts: 35

Joined: June 17, 2004

Location: United States

Posted: February 08, 2005 at 3:40 PM / IP Logged

Any suggestions for a clean 12 volt?

nexlvl

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