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Reload Thread: Koda 8 Review

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    Koda 8 Review

    Thought you guys might be interested in this also:

    Quote Originally Posted by cheapboy on ECA
    Got my Koda 8's today, pulled them out of the box and starting playing some 20hz sine waves through them to soften up the suspension. I cranked the drive level to 17.5Vrms and noted that although there were some loud mechanical noises and distortion was clearly audible, that I don't believe I saw more than roughly 1cm of forward excursion. Push/Pulling with both hands on the cone after break-in also gave me the impression that 19mm of 1 way forward xmech may seem a bit exaggerated on the unit I received, or perhaps I'm just blind.

    Pics of the driver:

    http://img.photobucket.com/albums/v3...e004Medium.jpg
    http://img.photobucket.com/albums/v3...e003Medium.jpg

    Nearfield+Farfield frequency response:
    (note: breakup modes in the nearfield were also shown to be present at 1m)

    http://img.photobucket.com/albums/v3...dafocal8fr.jpg

    I also compared non-linear distortion between the Focal 8w5411, a 12" tc2+, and the Koda 8... all at 1m, unbaffled, in free-air. The results were surprising in that the Koda 8" had about 5-15db higher 2nd and 3rd order distortion combined between 40-300hz than the Focal 8", at about 8Vrms referenced to the Koda 8" @ 40hz.

    A subjective listening test using the tc2+ as a reference (note: it also measured considerably lower distortion than either 8" which is not surprising) also gave me the sense that the tones being played through the Koda 8" were not as pure as that of the Focal 8". A slight "shrillness" to the tone could be heard, although below 100hz it was difficult to say. Also, when driven to nearly their mechanical limits at 40hz, I have to mention the Koda was noticeably louder than the Focal unit.

    I had some pretty high expectations for the Koda 8", and I was left a bit dissapointed with their non-linear distortion performance at moderate levels and the mechanical excursion of the unit, especially given such a large surround.

    FWIW, here is a FFT of a 20hz sine wave, 13.8Vrms for the Koda 8" and adjusted for the Focal 8"... although they're very close in distortion performance, the Focal is really at it's physical limits at this point and there are some very loud mechanical noises coming from it. The Koda 8" is making some noise, but not close to the level of the Focals which are obviously being overdriven.

    http://img.photobucket.com/albums/v3...g/20hzcomp.jpg

    I still feel that I need to run further tests to really see what's going on however. The Koda clearly outclasses the Focal 8" at the highest drive levels where mechanical noises become an issue, but within their range of quiet operation, it would seem that the Focal 8" betters the Koda 8" between 40-300hz. At this point I'm just a bit confused, especially given the remarkable performance of the Koda 10".
    Linky: http://forum.elitecaraudio.com/showt...threadid=99719







  2. #2
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    Re: Koda 8 Review

    um. from all the boasting from mr kepheart and all the crap that everyone has been saying about these, this says otherwise. how does the focal compare to the RE 8"? ive never heard any of the three drivers.

    whats the deal with the koda 8's guys? i was planning on using these on my next install, but i dont know.


    //edit

    i would read the thread you linked to ^^^ but i dont have a username and im too lazy to make one. rofl.




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    Re: Koda 8 Review

    Quote Originally Posted by req
    i would read the thread you linked to ^^^ but i dont have a username and im too lazy to make one. rofl.
    I figured most people wouldn't, that's why I posted the initial review in my post
    Last edited by squeak9798; 09-08-2004 at 06:21 PM.




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    Re: Koda 8 Review

    sigh. so little information about these. i really need to find some reliable info from many sources. all ive gotten so far is hype.

    HAS ANYONE GOTTEN ANY OF THESE YET AND COMPARED THEM TO A RE 8"??




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    Re: Koda 8 Review

    I believe, that Adire even stated, that the re8 and koda 8 are obviously two completely different drivers. The Koda 8 is more of a double duty midbass/subwoofer if i'm not mistaken...and the re8 is really a subwoofer. The koda8 is capable of handling higher frequencies (from what i've read). Also, the re8 is cheaper and better as a "subwoofer". The koda 8's are supposed to be great in conjuction with a horn install (from what i've read). Just continue reading and researching...also...remember Stereo Integrity will be back up in late october....with some wonderful little 8's of their own. peace

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    Re: Koda 8 Review

    Quote Originally Posted by req
    um. from all the boasting from mr kepheart and all the crap that everyone has been saying about these, this says otherwise. how does the focal compare to the RE 8"? ive never heard any of the three drivers.

    whats the deal with the koda 8's guys? i was planning on using these on my next install, but i dont know.


    //edit

    i would read the thread you linked to ^^^ but i dont have a username and im too lazy to make one. rofl.
    Go read the updates and conclusions made in that thread... Bottom line, it's a great choice for a small subwoofer/midbass driver. Is it the end-all/be-all of subs or midbasses? No, but it's also $79 each...

    Dan Wiggins
    Adire Audio




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    Re: Koda 8 Review

    God I hate it when people try to analyize a final product with a machine.

    It's like buying a car and sitting on the hood to drive it.




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    Re: Koda 8 Review

    man, what a bunch or whiny babies.
    But Focal vs Adire, are they even close in price ?
    Its price vs. peformace




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    Re: Koda 8 Review

    Quote Originally Posted by jlaine
    God I hate it when people try to analyize a final product with a machine.

    It's like buying a car and sitting on the hood to drive it.

    Well how else are you going to find out how much wind noise you will have with the car?




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    Re: Koda 8 Review

    Quote Originally Posted by snipe523
    Well how else are you going to find out how much wind noise you will have with the car?
    Sit in it.




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    Re: Koda 8 Review

    rofl. well i just want to hear some more oppinions of people who have this woofer installed - thats all.

    my buddy is a huge basshead, and i told him that 4 re8's will kick his ***. he loves that deeb bass rumble, but he cant go with "big" speakers- as his father told him, so lots of little ones is the solution.

    do you know if these kodas (or the re8s, or any other 8 that isnt over $100 a piece like the 8w7) can handle those kinds of frequencies? its gonna be ported. and he wants it to get REAL loud.

    any suggestions?

    //edit
    oh yea;

    Quote Originally Posted by DanWiggins
    Go read the updates and conclusions made in that thread... Bottom line, it's a great choice for a small subwoofer/midbass driver. Is it the end-all/be-all of subs or midbasses? No, but it's also $79 each...

    Dan Wiggins
    Adire Audio
    alas, i dont have a username\pass, may i borrow yours hehe. i dislike forums that dont let guests browse. keeps some of the newbs from asking a million questions, and lets them search around before posting (hopefully)




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    Re: Koda 8 Review

    Quote Originally Posted by jlaine
    God I hate it when people try to analyize a final product with a machine.

    It's like buying a car and sitting on the hood to drive it.

    how far apart should your legs be spread when doing so?


    i'd venture to say i'd love to see you do it....

    your pants can be on or off...

    but mine will definitely be at my ankles.



    Tommyk90 buys generic vegetables

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    Re: Koda 8 Review

    Quote Originally Posted by PitySister
    how far apart should your legs be spread when doing so?


    i'd venture to say i'd love to see you do it....

    your pants can be on or off...

    but mine will definitely be at my ankles.
    how will you use the wheel and pedals. please dont tell me it involves a rope to tie the wheel straight and a piece of wood to wedge in between the seat and the gas....

    your crazy . i have a digital camrea though.




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    Re: Koda 8 Review

    Quote Originally Posted by PitySister
    how far apart should your legs be spread when doing so?


    i'd venture to say i'd love to see you do it....

    your pants can be on or off...

    but mine will definitely be at my ankles.
    You have pants? Why? Weirdo.

    -Constantly ****




    Is this not a reasonable place to park?

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    Re: Koda 8 Review

    You all are pervs.

    Perhaps that's why I keep coming back.

    - Stay nekkid




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