Closed Thread
Results 1 to 5 of 5

Reload Thread: Stock Head Unit Tweeter Buzz

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



    Join Date
    Jul 2011
    Location
    Vancouver
    Posts
    4
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Icon32 Stock Head Unit Tweeter Buzz

    This is my first post, I'd appreciate any advice
    I have a 2009 Lancer Ralliart with the basic CD player (no sub or amp). It's pretty low end, 14W speakers (not sure what the HU spec is). I chose to upgade speakers first and installed Alpine SPR-60s in the rear doors and SPR-60Cs in the front doors/A pillar.
    I'm now getting a buzz from the tweeters (front & rear) now which wasn't there with the stock speakers. old speakers 4ohm, new speakers are 4ohm. checked all wiring and connections for shorts loose connections. i get the buzz at any volume and with or without the engine running. Stock HU ground seems OK.
    I'm an electrician but a car audio noob, not sure what is causing the buzzing.
    I plan to upgrade the HU to an Alpine iDA-X305S in a few months, will the problem go away with a decent HU? My stock HU is crap, is it to week to drive the new higher wattage speakers therefore causing the buzz?
    It's worse on certain songs and happens with CDs and ipod plugged into aux input. any help trouble shooting or advice would be greatly appreciated!

    Cheers







  2. #2
    subzero's Avatar
    subzero is offline CarAudio.com Veteran



    Join Date
    Sep 2008
    Location
    Phoenix, AZ
    Age
    37
    Posts
    6,348
    Post Thanks / Like
    Images
    30
    Mentioned
    20 Post(s)

    Re: Stock Head Unit Tweeter Buzz

    sounds like interference or grounding problems. could also be wiring issues.

    Trace your steps again and make sure all speakers are wired right and nothing is grounded out.

    Also, if your stock speakers are not coaxial, then the sound might have been there the whole time, but your old speakers wherent able to reproduce the tone. If so, then it might also be a headunit problem.




  3. #3
    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
    5,808
    Post Thanks / Like
    Images
    28
    Mentioned
    155 Post(s)

    Re: Stock Head Unit Tweeter Buzz

    i think you are right to be suspect of the factory radio.

    if it was front only then i'd expect some EMF with the crossover's inductors and would suggest moving them.

    my advice is usually to replace the head unit before the speakers, since the factory head unit will be insufficient to power aftermarket speakers.

    i assume you simply extended the factory wire at each speaker? how did you make those connections? solder/heat shrink? did you use female disconnect terminals (the ones that came with the speakers)? the methods that NEC finds acceptable for AC wiring in homes is not acceptable in the automotive environment. i.e. no wire nuts and electrical tape as an insulator over crimp or soldered terminals/connectors. maybe you knew that, but it's worth mentioning. one common mistake i have seen made over the years is to wrap bare wire around the speaker terminals. that has a tendency to short out against the speaker basket - which is grounded to the car door. one strand touching any metal can wreck havoc on a system.

    the best way to install car audio is to take a que from the factory wiring methods. all in loom, all secured often, all terminated in plugs - i.e. no splices.

    here is a good build log that details wiring methods for car audio - pictures say a lot more than words:
    2005 Scion tC SQ Hertz Audison Pioneer Build Log



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

    *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
    *1998 Astro Van Build Log: http://www.caraudio.com/forums/car-audio-build-logs-cars-trucks-suvs/567468-kha-does-spl-build-1996-astro-van.html

  4. #4
    reipan's Avatar
    reipan is offline Junior Member

    Threadstarter


    Join Date
    Jul 2011
    Location
    Vancouver
    Posts
    4
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: Stock Head Unit Tweeter Buzz

    Thanks for the replies,
    i did reuse the factory wiring, the factory wire termination connectors went into a molex type connector (i broke them apart hoping the proper female wire end was inside buy wasn't). i bought crimp-on female ends for the alpine + & - speaker tabs (similar to the units on the ends of the Alpine crossover speaker wire) stripped the right amount of wire and crimped them (they seem quite secure). should I be using solder to connect the speaker wire to the speakers + & - tabs? I'll definatley look at the documant you've include, thanks.
    Is it worth while running new aftermarket wires when I replace the HU? I doubt I'll add an amp or sub (maybe the alpine KTP-445 which plug and play) i'm not looking for super load, I just like clean audio.
    I know i'm under powering the new Alpine's, If i listen to these with the buzzing for 6 months while i'm waiting to replace the head unit will i do them any harm?




  5. #5
    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
    5,808
    Post Thanks / Like
    Images
    28
    Mentioned
    155 Post(s)

    Re: Stock Head Unit Tweeter Buzz

    good crimp connections are sufficient. solder is best, but not a requirement.

    clean sound at higher volumes requires an external amp. even an aftermarket HU has a lot of distortion in the tiny amp built-in.

    depends on what the buzzing is and what causes it. may be a sign the HU will fail. 6 mo. is too long - just buy a cheap used HU now - even $30 for a basic used Alpine or something.



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

    *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
    *1998 Astro Van Build Log: http://www.caraudio.com/forums/car-audio-build-logs-cars-trucks-suvs/567468-kha-does-spl-build-1996-astro-van.html

Closed Thread

Tags for this Thread

Posting Permissions

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

1e2 Forum