Closed Thread
Results 1 to 5 of 5

Reload Thread: Head unit RCAs question

  1. #1
    Lost_Dragon86's Avatar
    Lost_Dragon86 is offline Junior Member



    Join Date
    Nov 2012
    Location
    North San Diego County
    Posts
    4
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Head unit RCAs question

    Okay, I tried to hook an extra amp to my system to test my sub woofer box. I have my small 4 channel amp connected for a while and everything seemed fine. I hooked my second amp to my system to test the woofer. Suddenly the 4 channel amp seems to be getting input from the sub channel and the front and rear channel. If I leave the subwoofer out terminals disconnected the 4 channel amp sound is muted, if I plug in either the RCA or the ground loop isolator to the sub out RCA of the deck, the sound gest better, and if I turn on the sub out on the deck I get bass coming to the 4 channel amp but not the sub woofer amp. And the sub amp is currently disconnected I was getting bad alternator whine with both sub amps I was testing. I tried grounding the sub RCA because they came with a ground wire, and I tried the ground loop isolator and was still getting the whine. Help? Could the deck be faulty?







  2. #2
    keep_hope_alive's Avatar
    keep_hope_alive is offline Acoustics Engineer keep_hope_alive is a Supporting Member of the forum!



    Join Date
    May 2007
    Location
    Quad Cities, IL
    Posts
    5,923
    Post Thanks / Like
    Images
    28
    Mentioned
    159 Post(s)

    Re: Head unit RCAs question

    we need pics of how you wired your amps, or a diagram that shows RCA's and speaker wires and relationship to the headunit



    have you been helped by me? i'd love to know. shoot me a PM.

    My 2014 Accord build log: http://mobileaudioforum.com/forum/showthread.php?6722-KHA-2014-Accord-Sport-SQ-Factory-Integration
    ***My YouTube Channel https://www.youtube.com/channel/UCkYUo2EShW9lgtrfXiDvLNQ/videos
    *My 2001 Accord build log: http://www.caraudio.com/forums/car-audio-build-logs-cars-trucks-suvs/536049-2001-accord-ex-sedan-its-long.html
    *2005 Scion tC Build Log: http://www.caraudio.com/forums/car-audio-build-logs-cars-trucks-suvs/516096-2005-scion-tc-sq-hertz-audison-pioneer-build-log.html

  3. #3
    Lost_Dragon86's Avatar
    Lost_Dragon86 is offline Junior Member

    Threadstarter


    Join Date
    Nov 2012
    Location
    North San Diego County
    Posts
    4
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Head unit RCAs question

    It would be hard to take pics, right now, I yanked the subwoofer RCA cable out, cause I am sure that is where the noise was originating from, but the subwoofer sound coming into the four channel amp is still an issue. I left the ground loop isolator connected to the back of the deck wiring. It increases the volume of the 4 channel amp for some reason. The deck is a Premier F90 BT. It has a wire harness that plugs into the back of the deck and has all the RCAs coming out of it.




  4. #4
    QueSound15's Avatar
    QueSound15 is offline I know a thing or two....



    Join Date
    Sep 2012
    Location
    Bloomington, IN
    Posts
    270
    Post Thanks / Like
    Mentioned
    1 Post(s)

    Re: Head unit RCAs question

    im pretty sure the rca didnt have a ground wire with it. I dont know for sure but i think that may be a remote amp turn on wire built in to the rca for convenience. just an fyi if im right




  5. #5
    Lost_Dragon86's Avatar
    Lost_Dragon86 is offline Junior Member

    Threadstarter


    Join Date
    Nov 2012
    Location
    North San Diego County
    Posts
    4
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Head unit RCAs question

    Well I took that RCA out anyway. But that RCA is a cheap monster cable, and that extra wire is on the opposite side from where the power on connection is on one amp, it would be on the same side with my other amp, but u have to pull apart the RCA cable to make that wire long enough to connect to the power on terminal.
    Last edited by Lost_Dragon86; 11-28-2012 at 06:32 PM.




Closed Thread

Similar Threads

  1. Head Unit RCA Output Repair Question
    By Mattd0344 in forum Head Units
    Replies: 1
    Last Post: 10-04-2010, 10:17 PM
  2. Pioneer head unit transfer questions.
    By JimJ in forum Head Units
    Replies: 1
    Last Post: 09-10-2005, 03:26 PM
  3. Head Unit Removal Question...
    By lil_teezy in forum Head Units
    Replies: 9
    Last Post: 09-01-2005, 02:20 PM
  4. Head unit install question?
    By Corpserodeo666 in forum Wiring, Electrical and Installation Help
    Replies: 5
    Last Post: 02-08-2005, 10:08 PM
  5. Eclipse Head Unit / Sub question.
    By 0ptikal in forum General Discussion
    Replies: 6
    Last Post: 03-21-2004, 08:01 PM

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts
1e2 Forum