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    abuadam's Avatar
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    do I need a line driver?

    Here's my head unit specs:

    5v peak/ 2v RMS RCA output on all channels
    100 ohm low impedance pre-amp outputs

    bass frequency adjustment - 60, 80, 100, 130, 150 and 200hz
    bass q factor - 1, 1.25, 1.5, and 2
    treble frequency adjustment - 10, 12.5, 15, and 17khz
    sub x-over - 80, 120, and 160hz
    sub phase - 0 - 180
    sub level - variable







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    helotaxi's Avatar
    helotaxi is offline Kilroy was Here



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    Re: do I need a line driver?

    No. Unless you are running RCAs the length of a bus, the HU you have will provide plenty of voltage.



    Artificial Intelligence is no match for Natural Stupidity.

    Never underestimate the power of stupid people in large numbers.

    Life's tough...it's even tougher when you're stupid.

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    Re: do I need a line driver?

    thanks for the quick reply....i'll see what i can do without one and only if there is too much noise will i consider it.

    Cheers!




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    helotaxi's Avatar
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    Re: do I need a line driver?

    If there is noise then chances are that the line driver won't make a difference either and then you would have one more component in the signal chain adding to the noise floor. Line drivers have their place, but it isn't in 99% of the systems that have them. I think you would be hard pressed to actually find a system where the line driver actually fixed a noise problem. If there is a significant level of noise with a properly set gain and it goes away with a lower gain setting, there is a problem with the input stage of the amp. You're better off spending the money saved by not getting a line driver on a higher quality amp that won't have gain noise issues.



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    Never underestimate the power of stupid people in large numbers.

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    Ne1's Avatar
    Ne1
    Ne1 is offline MacDaddy lookin for the $



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    Re: do I need a line driver?

    Nah, 2v ought to be plenty....I think my 7914 puts out less than that, and I have no noise to speak of....



    My Stuffs:
    Headunit: Alpine 7930
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    Sub Amp: Fusion FP1000D
    Mids : Rainbow CS 230
    Subs: Ascendant Audio Atlas 12" (2)
    Lotsa Deadening of various natures, generic wire and so forth all stuffed in a 1996 328iS.

    "It's loud enough"

    Refs:Blazemore

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