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  1. #1
    Join Date
    Jun 2007
    Location
    Rice Lake, Ontario
    Posts
    626

    Default radio cuts out at higher volume

    My stock stereo on my 2006 mobius LSV cuts out at higher volumes.


    if i put it up to about 21 and heavy music is playing, the system loses power briefly and then comes back on... with loudness off, it does the same at about 24.

    is the problem the stock unit is crap? or is there something else going on?
    2006 Moomba Mobius LSV
    Lake: Rice lake, Ontario
    Stereo: Kenwood KMR-550U
    Ballast: 750 Surfside locker, 400 Surfside mid boat, 400 Gravity I, 400 Bow
    Surfboards: Inland Surfer Red Woody, Triple X Composite X 58"

    If you're from the area and want to surf, send me a PM!

  2. #2

    Default

    You have amps? Or just HU and speakers? Could be overdriving systems capability or a power problem. If volts too low may be an issue. Need more info, specifics to help.

  3. #3
    Join Date
    May 2009
    Location
    Dallas, TX
    Posts
    880

    Default

    Spyder,
    During that period it was common for a Moomba or Supra to run six speakers from a source unit only with the four cockpit speakers wired in parralel off two channels. With a 2-ohm load the BTL chip amplifier in the source unit would fall on its face really hard at a moderate volume. The easy fix, if this scenerio fits, is to rewire this section in series. While the power may drop at 8-ohms the stability more than makes up for it and you get much more output. The source will now reach a volume limit without hard clipping or shutting down. Again, this only applies to a non-amplified system.

    David
    Earmark Marine

  4. #4
    Join Date
    Jul 2009
    Posts
    10

    Default

    Quote Originally Posted by EarmarkMarine View Post
    Spyder,
    The easy fix, if this scenerio fits, is to rewire this section in series. While the power may drop at 8-ohms the stability more than makes up for it and you get much more output.

    David
    Earmark Marine
    David...you're exactly right. I have the same problem in my '06 Supra 21V with the Kenwood hu. Finally last night I rewired both pair of cabin speakers in series. So far so good! The real test will be this weekend to see if I can crank it without shutting down.

    Scott

  5. #5
    Join Date
    Jun 2007
    Location
    Rice Lake, Ontario
    Posts
    626

    Default

    Quote Originally Posted by NewmbaTX View Post
    You have amps? Or just HU and speakers? Could be overdriving systems capability or a power problem. If volts too low may be an issue. Need more info, specifics to help.
    just the stock deck in a 06 mobius... with stock speakers (6)..

    no amp.
    2006 Moomba Mobius LSV
    Lake: Rice lake, Ontario
    Stereo: Kenwood KMR-550U
    Ballast: 750 Surfside locker, 400 Surfside mid boat, 400 Gravity I, 400 Bow
    Surfboards: Inland Surfer Red Woody, Triple X Composite X 58"

    If you're from the area and want to surf, send me a PM!

  6. #6
    Join Date
    Jul 2002
    Location
    Northern California (Seba
    Posts
    81

    Default

    I am having the same issue can you help with the terminology of in series? Thank
    You
    Lake Bound
    2002 Moomba Outback LS
    Indmar, Carb

  7. #7
    Join Date
    May 2009
    Location
    Dallas, TX
    Posts
    880

    Default

    Series description:
    Amplifier positive to speaker 1 positive.
    Speaker 1 negative to speaker 2 positive.
    Speaker 2 negative to amplifier negative.
    Same for opposite channel.

    David
    Earmark Marine

  8. #8
    Join Date
    Jul 2009
    Posts
    10

    Default

    Here's the link to a site that I used to clarify how to wire speakers in "series" and "parallel".

    http://www.termpro.com/articles/spkrz.html

    Hope this helps...it did for me.

    Scott

  9. #9
    Join Date
    Jul 2002
    Location
    Northern California (Seba
    Posts
    81

    Default

    Thank you I will take a look and probably be rewiring mine.
    Lake Bound
    2002 Moomba Outback LS
    Indmar, Carb

  10. #10
    Join Date
    May 2006
    Location
    TEXAS
    Posts
    28

    Default

    thanks david, ive had this problem since 06. Always happens when the chicks are dirty dancing...total buzzkill. Thanks again for the info

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