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    Powering the Components

    Just bought an infinity component set consisting of two 6x8s, two tweeters and two crossovers.
    The 6x8s are 90w rms 270peak, and the tweeters are 50w rms 150peak.

    To take advantage of the full power,
    Is it safe to run 140watts (at 14.4v) to each pair?







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    Re: Powering the Components

    Did they come as a set? What is the rating on the speakers as a set?



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    Re: Powering the Components

    Detailed Description of the 680.7cs:
    680.7cs
    Infinity Kappa 680.7cs 5x7" / 6x8" 2-Way Component System (Set)

    component speaker system includes woofers, tweeters, and crossovers
    Impedance: 2 Ohms
    5x7" / 6x8" Plus One+ woven-glass-fiber woofer cone
    Edge-driven MMD dome tweeter
    Starfish™ mounting bracket for easier tweeter installation in factory locations
    Power range: 90 watts RMS (270 watts peak)
    Frequency Response: 45Hz - 25kHz
    Sensitivity: 94dB
    Mounting Depth: 2-1/4"
    Sold In Pairs




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    Re: Powering the Components

    RMS is 90, so 140 might be pushing it. Also noticed they're 2ohm instead of 4ohm like most speakers, so make sure you check the 2ohm rating of the amp you choose, so you don't accidently over power them...




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    Re: Powering the Components

    The 6x8 is 90watts rms and the tweeter is 50 watts rms
    I was simply adding the two rms ratings together to obtain the 140.

    They are going to be wired into 4 channels(one 6x8 and one tweeter per channel unfront, and then two 6x8s for the rear)
    If i fed 90watts rms to the 6x8 and tweeter, on 1 channel using xover, wouldnt that be underpowering them? Not using the potential 50watts remaining)

    It seems they have simply listed the rms rating for the 6x8 and not the tweeter.
    Any ideas?




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    Re: Powering the Components

    The crossover will send the frequencies below the crossover point to the mids and above the crossover point to the tweeters. Both the mid and tweeter will be getting the same power from that amp channel since they are operating on different frequencies.



    If that doesn't make sense, here's an example that'll hopefully help:
    • AMP: each channel can provide 100w rms at 2 ohms.
    • MID: Will get 100w rms because the crossover filters 80-3000 Hz frequencies to it.
    • TWEETER: Will get 100w rms because the crossover filters 3000+ Hz frequencies to it. Although, the passive crossover will probably limit the amount of power actually getting to the tweeter through a built-in protection circuit.
    Last edited by DejaWiz; 09-24-2007 at 12:03 PM.



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    Re: Powering the Components

    I did not know that the mid and tweeter, each on its own, will get the same power from that amp channel because they are on different frequencies.
    Thanks for the post

    =)




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    Re: Powering the Components

    No problem.



    2010 Kia Forte SX
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    Bought from: jacobcopeland87, 95bat, alxmlr789, na_rsx


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    Re: Powering the Components

    Quote Originally Posted by crazyone View Post
    Power range: 90 watts RMS (270 watts peak)
    Frequency Response: 45Hz - 25kHz
    - The speakers are rated full-range, as low as they will go (45HZ)... in other words, no crossover.

    If you use a high-pass crossover on the amp at 80HZ or higher, they should handle double the rated power.



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    Soundstream Reference 405 5-channel amplifier

    (2) Parts Express DVC12 12 inch subwoofers

    Send a private message to me for more details on these products.

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    Re: Powering the Components

    Great,
    thanks for the info




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