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Reload Thread: Discussion about HU Preout Voltages

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    Discussion about HU Preout Voltages

    To my understanding:

    A 2volt HU will produce a 1volt signal when the music is at 0dBfs (loudest). Each 6dB you boost a signal it will output an additional amount voltage. So a 2volt HU can boost audio signals a maximum of 0dBfs + 6dB (1+1 = 2volts) before clipping.

    the 4volt HU's are capable of a maximum of 0dBfs + 12dB (1+3 = 4volts).

    My question is, a pioneer premeer 940MP claims to have 6volt outputs. Their dsp specs however only claim to be able to do +- 12dB. (4volts). Are there any ways these 2 remaining volts would ever be utilized or is it just hype from pioneer?

    Here are 2 links with relevant info:

    940MP
    http://www.pioneerelectronics.com/Pi...,28913,00.html

    Description of voltages
    http://www.eatel.net/~amptech/elecdisc/caraudio.htm

    Thanks!
    Last edited by tgkx; 12-07-2002 at 05:10 PM.







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    some manufactors rate their preouts voltage differently. some company like alpine rates their output at about 4v, and they do 4v before over 0.1% THD+N. other companies, say like pioneer, may rate the 6v at maximum distortion (volume all the way up?)

    rockford's fosgate's preouts don't distort (inaudible) so their maximum rating is the same as the maximum undistorted.
    Last edited by GSteg; 12-07-2002 at 05:08 PM.



    Hello GSteg it appears that you have not posted on our forums in several weeks, why not take a few moments to ask a question, help provide a solution or just engage in a conversation with another member in any one of our forums?

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    Originally posted by Jmac
    Forget to read this part ?
    but realistically it should never send a signal more than 4v down the rca's should it?




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    Hello GSteg it appears that you have not posted on our forums in several weeks, why not take a few moments to ask a question, help provide a solution or just engage in a conversation with another member in any one of our forums?

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