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Thread: Comparison Help

  1. #1
    1st Gear

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    Comparison Help

    Hey guys, I will be replacing the Bose Concert HU in my 98 A4 1.8T. I have narrowed it down to a few different choices, but I don't know as much as I would like to know about stereo equipment and I need some help knowing the differences in these HU's. I am trying to figure out if spending the extra money is going to be worth it.

    I have pretty much narrowed it down to an Alpine unit from different things I have heard, but if anybody has any input on Alpines, that would be great also!

    In NO particular order:

    Option #1 - Alpine CDA-9830

    Option #2 - Alpine CDA-9831

    Option #3 (Long shot b/c of price) - Alpine CDA-9833

    Now, don't just tell me the one that is more expensive is better, I want to know what the benefits are to some of the features of the more expensive ones. That way I can weigh the options better.

    TIA! [img]/ubbthreads/images/graemlins/beerchug.gif[/img]

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  3. #2
    1st Gear

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    Re: Comparison Help

    Thanks for the help. As far as I can tell, the only difference between the 9830 and 9831 is that you can change the color of the buttons on the 9831 and not on the 9830. I am still trying to debate if the extra money is worth it. I can get them for much cheaper than what that site says anyway.

    About the 6 channel vs 3 channel crossover, exactly what does that mean. I know that crossover has something to do with making the right pitches of sound go to the right speakers.

    And what about the 6 channel vs 4 channel digital time correction, what does that do?

    Thanks, I know the car related stuff, but I'm just learning the ICE stuff. Any help is appreciated!

    PS. thanks for the info Richy, I don't know that I will end up going with the 9833, but if I can get it for a good enough price in relation to the others, I might.

  4. #3
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    Re: Comparison Help

    9830 & 9831 are exactly the same in spec, so no idea why one is more expensive.
    The 9833 is 10w per channel more powerful and it has 6 channel Xover instead of 3, and 6 channel digital time correction instead of 4, and 5 band parametric EQ.
    So really just more things to fiddle with.

  5. #4
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    Re: Comparison Help

    to be fair ive got the 9833 and well i cant figure out all the bits that it does.. im not one for spending time reading the manual..


  6. #5
    imported_Pottsy
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    Re: Comparison Help

    Never quite understood why Alpine offer 6 and 4 channel time correction, assuming you don't have 2 subs. You always set the furthest speaker to 0ms delay. Normally the sub. Then delay the 2 front and 2 rear speakers.

    So for 4 channel, just calculate as normal, pretending there's a sub set at zero. For 6 channel, excactly the same except you do set the sub at 0.

    FWIW, just installed a Boston C110 competitor into my A4 B6 Avant. Bass sounded muddled. Tried different X-over frequencies and slopes, but still not quite right. Reversed the phase and miles worse. Entered the time delays and Woo Hoo! Tight, integrated, punchy bass.

 

 

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