engine whine and hissing

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1stclasso

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Joined: March 18, 2006

Location: United States

Posted: June 30, 2006 at 12:31 AM / IP Logged

ok, i know this has been posted many times in the this forum, but as we all know every situation is different, and i have narrow it down, but still cant knock it out! the whine is low but the hissing noise is high

it was a up graded system, did touch the amp for the highs but after we changed the sub amp and the speakers for the highs, the whine began coming from the highs, we replaced the battery , disconnected the sub amp, cleaned the grounds, switch the high amp.

when i unplug the rca's from the amp the whine stops, when we unplug the rca's from the head unit it stops, but only when no rca's are connected! the head unit is a Kenwood DDX-7017 double din! what else should i try . or what could it be!

forbidden

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Joined: November 01, 2003

Location: Alberta, Canada

Posted: June 30, 2006 at 12:53 AM / IP Logged

More info. What is the vehicle and balance of the gear. Where is the ground point, what guage wire etc. If your going to tell a story, we need the middle chapters.

Top Secret, I can tell you but then my wife will kill me.

1stclasso

Member - Posts: 36

Joined: March 18, 2006

Location: United States

Posted: June 30, 2006 at 1:09 AM / IP Logged

sorry that made a long day for me! im alittle brain dead! lol

its a 2001 buick park ave. 4 gauge from the battery to the dist block then 8 gauge to the hist amp, which is a dual 240 (shrug, his stuff) all stinger pro series wires. concept 5.25, concept 3.5, Mb quart dicuss 6x9! ground point is the a sanded down bare surface 11 inchs in length, from the frame in the truck, also all the grounds are the same as the power wires! and there is a 4 gauge ground on the frame underneth the hood goin to the battery!

aznboi3644

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Joined: May 01, 2006

Location: United States

Posted: June 30, 2006 at 1:30 AM / IP Logged

Try moving rca cable to opposite side of power wires if it isnt already?

1stclasso

Member - Posts: 36

Joined: March 18, 2006

Location: United States

Posted: June 30, 2006 at 1:35 AM / IP Logged

yea it is already on the opposite side!

spookiestylez

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Joined: September 23, 2005

Location: Virginia, United States

Posted: June 30, 2006 at 1:51 AM / IP Logged

tried a new set of rcs cables?

rtfm

1stclasso

Member - Posts: 36

Joined: March 18, 2006

Location: United States

Posted: June 30, 2006 at 7:54 AM / IP Logged

yea, i tried running a new set from the front to the back without goin underneth the carpet

geepherder

Platinum - Posts: 3,668

Joined: October 27, 2003

Posted: June 30, 2006 at 8:27 AM / IP Logged

Try grounding the rca outer shields at both the deck and the amp. You can even link them both to the amp ground(s) if you like.

My ex once told me I have a perfect face for radio.

1stclasso

Member - Posts: 36

Joined: March 18, 2006

Location: United States

Posted: June 30, 2006 at 9:00 AM / IP Logged

it worked when i grounded just one side of it at the HU.

what caused that?

and the high amp was was turning off when i connected the sub amp! could that had been the problem?

electrostatic

Copper - Posts: 154

Joined: January 06, 2006

Location: United States

Posted: June 30, 2006 at 4:52 PM / IP Logged

the shield ground wire limits the voltage of the shield to ground. by limiting this voltage you reduce shield noise current.

Prove your connections, use a meter!

I promise, I'll behave!

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engine whine and hissing

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