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Reload Thread: need advice on 6x8 speakers, candidates listed

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    jinroh's Avatar
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    Icon32 Pioneer REV vs Inifinity Kappa, advice on Co-ax off HU

    Greetings, in short, I want to replace the front stock speakers. Original budget around $150

    I narrowed down to two: Infinity Kappa vs Pioneer REV, powered by HU
    REV got lots of praises in the forum, the only concern I have is whether HU is enough to shine the 91dB speakers.
    In another hand, Kappa is popular, some says harsh tweeter. Its 94dB sensitivity will help when powered by HU.


    So, which one? any advices or suggestions are welcome.
    The speaker will be powered by Kenwood KDC-MP532U HU, (MOSFET 22 watts RMS/50 peak x 4 channels). no seperate amp.


    The car is 96 grand marquis, 5x7/6x8 front, 6x9 rear I believe.

    I did some research, candidates are listed below. Any advices are appreciated.

    Size Brand Series Model RMS W Peak W Sens dB Freq Freq Imp Ohm

    6x8c Infinity Kappa 680.7CS 90 270 94 45 25k 2
    6x8 Infinity Kappa 682.7CF 100 300 94 40 25k 2

    6x8 Kenwood Excelon KFC-X680 56 280 91 35 25k 4

    6x8 Pioneer REV TS-D801P 60 260 91 27 32k 4

    6x8c JBL Grand Touring GTO8607C 70 210 92 55 21k 2
    6x8 JBL Grand Touring GTO8627 60 180 92 50 21k 2
    6x8 JBL Power P8652 75 210 90 40 23k 4
    6.5c JBL Power P650c 90 270 90 45 23k 4

    5x7 Polk Momo MMC570 80 180 90 40 25k 4
    5x7 Polk db db570 60 180 93 52 22k 4
    6.5c Polk MMC 125 250 90 43 25k 4

    5x7 Alpine Type-R SPR-57C 100 300
    5x7 Alpine Type-S SPS-57C2 50 250 92 35 30k 4

    6x8c MB Quart Reference RCE 268 60 130 90 38 32k 4
    6.5c MB Quart Premier PCE 216 60 130 90 38 32k 4
    Last edited by jinroh; 01-14-2007 at 09:05 PM.







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    Re: need advice on 6x8 speakers, candidates listed

    I would go with the Pioneer REV series ...those are some very nice...6x8's




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    Re: need advice on 6x8 speakers, candidates listed

    I do hear from couple guys recommending REV, how is their performance compared to Infinity ref or kappa?

    BTW, shall I really confine myself in 6x8, how hard to fit 6.5 speakers?




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    Re: need advice on 6x8 speakers, candidates listed

    There are adapter plates available to convert from 6x8 5x7 to 6.5's or you can build one yourself out of 1/4 MDF by uses your stock speakers as a template and cutting out your 6.5 holes ...I did that in my 96 Mustang




    Current 2010 Louisiana USACi State Records :

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    SuperStock 1801-up..........154.2
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    Re: need advice on 6x8 speakers, candidates listed

    Thanks for details.
    Any competence Pioneer REV vs infinity.
    Our LHS has a infinity system, I would like to know how REV sounds compared to Infinity.

    It seem no local store carries pioneer REV series, so I will rely on the buddy feedbacks.




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    Re: need advice on 6x8 speakers, candidates listed

    since you are going off HU power out of those I like the Type- S speakers the most.




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    Re: need advice on 6x8 speakers, candidates listed

    So anyone has first hand experience of Pioneer REV powered by HU?




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    Re: need advice on 6x8 speakers, candidates listed

    I narrowed down to two: Infinity Kappa vs Pioneer REV
    REV got lots of praises in the forum, the only concern I have is whether HU is enough to shine the 91dB speakers.
    In another hand, Kappa is popular, some says harsh tweeter. It's 94dB sensitivity will help when powered by HU.

    So, which one? any advices or suggestions are welcome.




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    Re: need advice on 6x8 speakers, candidates listed

    REVs. They sound very decent off HU power and even better when you install an amp (even a smallish 50W/ch) on down the road.

    I was running a set of Pioneer 4 way 6x9's off HU power (22W rms/ch) for rears and they hit hard enough to feel a little bit in the chest....The REVs are better.



    2011 Kia Optima EX
    Factory HU + Speakers

    Planning:
    Front Comps - Blaupunkt Vc660 (active) | Sub - Infinity Kappa 800w IB | 5ch Amp - still deciding

    References
    Bought from: jacobcopeland87, 95bat, alxmlr789, na_rsx


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    Re: need advice on 6x8 speakers, candidates listed

    The kappas are 2 ohm, and i definitely wouldn't run a head unit at 2 ohms.



    2000 Contour SVT
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    Refs- Prowler573,awahl63, iamaw30, pboulos, unbonyr, trevor87 (no money involved, just sent a fuse to him).

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    Re: need advice on 6x8 speakers, candidates listed

    That's odd that they'd build coax's like that...



    Contour SVT
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    Re: need advice on 6x8 speakers, candidates listed

    Kappa's are nice, but they are 2 ohm and need to be amped. I would go with either the pioneer rev's or the Alpines.




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    Re: need advice on 6x8 speakers, candidates listed

    I had the Kappa's and some Diamond D372i's in my car. I wasn't very impressed with either of them. The best I have used for 5x7's are the Crystal's I'm running now. I haven't ran them off of deck power, but they are far louder and better sounding than the Kappa's were off of a small 35x4 amp.
    Last edited by Jeremiah25; 02-20-2007 at 02:17 PM.




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    Re: need advice on 6x8 speakers, candidates listed

    Quote Originally Posted by Jeremiah25 View Post
    I had the Kappa's and some Diamond D37i's in my car. I wasn't very impressed with either of them. The best I have used for 5x7's are the Crystal's I'm running now. I haven't ran them off of deck power, but they are far louder and better sounding than the Kappa's were off of a small 35x4 amp.
    Did you need an adapter for those?

    I have a 98 Contour and the 5 1/4 in a 5x7 plate doesn't fit



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    Re: need advice on 6x8 speakers, candidates listed

    Quote Originally Posted by b0mbrman View Post
    Did you need an adapter for those?

    I have a 98 Contour and the 5 1/4 in a 5x7 plate doesn't fit
    Need an adapter for what? Both the Kappa's and the Diamond's were regular 5x7's, and fit right in the factory 6x8(5x7) holes. The Kappa's I had were actually a 5x7 component set, and the diamonds are a biampable coax. Both of them sounded decent at first but they didn't last very long. They were both kindof low quality IMO.

    I'm getting ready to redo mine again, and build door pods for a good 6.5 mid bass, but the Crystals are the best 5x7 I have found.




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