Timbre matched - RT800i, CS245i, R10?

hrs
hrs Posts: 6
edited December 2001 in Technical/Setup
Just completed my Polk system with a pair of RT800i's to go with a CS245i, R10s in the back and a KLH sub. So my question is why does the white noise generator on the receiver sound different as it sweeps the channels? I would imagine the 245i and 800i should sound identical, while the R10's older drivers may be different. When watching tmovies I do not notice a difference, but I want to be sure there is not something weird going on. The center channel sounds more harsh than the fronts and rears.
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Comments

  • jcaut
    jcaut Posts: 1,849
    edited December 2001
    Well, really your speakers aren't perfect timbre matches. The CS245i should be close to the 800i's since they both have the tri-lam tweeter, but the overall tonal balance will be a little different. The R10's have different drivers altogether.

    In actual use, the sound should be acceptable, but with the test tones, you'll notice a difference. Perhaps you should consider upgrading to the CS400i, which would be a good match for your 800's. The R10's in the back should work fine.

    FWIW, I'm currently using a CS175i center with 800i's as fronts. Movies are secondary for me, and it doesn't sound bad, but I'm definately aware of the mis-match. I'll be getting a CS400i sometime soon.

    Jason

    P.S. Welcome to the forum!
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  • hrs
    hrs Posts: 6
    edited December 2001
    I'm satisfied with the 245i (the room is about 14 x 8 in an apartment), I wanted to make sure the speakers were not defective or something. If they are supposed to be a little different, then no problem. Thanks for the quick reply!
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  • Jay M
    Jay M Posts: 54
    edited December 2001
    Hi Hrs welcome to the forum. Keep in mind that those drivers in the CS245i are tuned differently to reduce cancellation. One driver will perform lower than the other. I think that may be what you are hearing. If you have any more ?'s here is my email.
    jmelani@polkaudio.com

    J
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  • hrs
    hrs Posts: 6
    edited December 2001
    That makes sense. Thanks!
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  • joelll
    joelll Posts: 120
    edited December 2001
    Also note that speaker positioning and the room's sound reflection characteristics are important. The mains are further off-axis from where you sit than the center-channel, and the rears are behind and above you somewhere (if your setup is typical HT).

    Try moving around in the room when you listen to the test tone sweep through the different speakers....
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