Ground from Deck makes speakers whine - diyAudio
Go Back   Home > Forums > General Interest > Car Audio

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 16th January 2009, 08:12 PM   #1
diyAudio Member
 
Join Date: Sep 2008
Location: Massachusetts
Default Ground from Deck makes speakers whine

In the latest installment of my confusion during the learning process ...

my deck [clarion dxz785usb] has a ground coming out of its harness with a metal attachment at the end for screwing into the metal chassis of the car.

My metra nissan harness has a black wire named "amplifier ground" ... I am indeed running an amp to the deck via RCA's with a remote wire as well ...

So at this point i'm thinking "do I wire the ground from the deck to the chassis or through the aftermarket harness into the amplifier ground wire?"

I do a google search and find posts from another DIY forum where people are questioning if NOT wiring the ground from the deck to the chassis is whats causing it ... and visca versa ....

Whaddya guys think cause I'm stumped ??
  Reply With Quote
Old 16th January 2009, 08:33 PM   #2
damage is offline damage  United States
diyAudio Member
 
Join Date: May 2006
Are you using Nissan amps or aftermarket amps, speakers, and speaker wire?

I would use the same ground as the amps. You can measure voltage between chassis and battery negative if there is any doubt. You can also measure voltage from that harness "ground" to the chassis ground to see if there are any differences there.
  Reply With Quote
Old 16th January 2009, 08:42 PM   #3
shagone is offline shagone  United States
diyAudio Member
 
Join Date: Apr 2007
Default Re: Ground from Deck makes speakers whine

Quote:
Originally posted by metaverse
In the latest installment of my confusion during the learning process ...

my deck [clarion dxz785usb] has a ground coming out of its harness with a metal attachment at the end for screwing into the metal chassis of the car.

My metra nissan harness has a black wire named "amplifier ground" ... I am indeed running an amp to the deck via RCA's with a remote wire as well ...

So at this point i'm thinking "do I wire the ground from the deck to the chassis or through the aftermarket harness into the amplifier ground wire?"

I do a google search and find posts from another DIY forum where people are questioning if NOT wiring the ground from the deck to the chassis is whats causing it ... and visca versa ....

Whaddya guys think cause I'm stumped ??
run your ground with metal attached to a bare metal spot on the chassis. you can run a secondary ground back to your amp from the metra harness "amp ground" (to minimize the chance of ground loops) but it is not always needed as long as you have a good short ground path to bare chassis at the amp and your signal rca's are run on the opposite side as the battery positive power wire.
  Reply With Quote
Old 16th January 2009, 08:52 PM   #4
diyAudio Member
 
Join Date: Sep 2008
Location: Massachusetts
Default Re: Re: Ground from Deck makes speakers whine

Quote:
Originally posted by damage
Are you using Nissan amps or aftermarket amps, speakers, and speaker wire?

I would use the same ground as the amps. You can measure voltage between chassis and battery negative if there is any doubt. You can also measure voltage from that harness "ground" to the chassis ground to see if there are any differences there.
The Nissan amps are the factory amps. Each bose speaker is attached to its own amp connected to it those amps leads then run up into the harness.

The stock harness is connected to the Metra harness which then connects to the Deck harness.

Also for those amp leads I wired an RCA to each of the four speaker wires on the metra harness so that they connect directly into the preamps for FRONT and BACK on my deck.

Should I still check the voltages, if so how? With a multimeter? I've only used an ohm meter before.


Quote:
Originally posted by shagone


run your ground with metal attached to a bare metal spot on the chassis. you can run a secondary ground back to your amp from the metra harness "amp ground" (to minimize the chance of ground loops) but it is not always needed as long as you have a good short ground path to bare chassis at the amp and your signal rca's are run on the opposite side as the battery positive power wire.
Ah **** ... There's something I forgot to mention. I have a 15" i'm trying to hook up as well ...

Again, each component speaker has its individual amp (factory bose).

The battery wire (for the sub) is running along the left side of the car along the kick panels and into the trunk where the Earthquake amp and 15" are. The RCA's for the sub are run underneath the back seat , under the center console up into the deck area.
  Reply With Quote
Old 16th January 2009, 09:02 PM   #5
shagone is offline shagone  United States
diyAudio Member
 
Join Date: Apr 2007
oooh Bose. sometimes the individual amps go out on the bose systems and they do whine (capacitors leak and need to be replaced). was the bose system working with the factory head unit recently? did you get the bose specific metra harness? if so try grounding the metra harness "amp ground" to the chassis of the new radio by a screw or something and ground the radio to the car chassis.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Need help troubleshooting whine in speakers roger2 Car Audio 5 19th May 2009 04:22 PM
Advice needed on engine whine in speakers DeadSpeaker Car Audio 13 1st May 2009 06:57 PM
Ground loops & whine on my guitar's output signal! HankMcSpank Solid State 1 13th August 2008 08:47 PM
what makes some speakers good and some awful? nerd of nerds Multi-Way 5 23rd September 2004 08:39 AM
What makes different speakers sound ... different? cuallito Multi-Way 16 14th April 2004 01:13 AM


New To Site? Need Help?

All times are GMT. The time now is 11:07 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2