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  1. #1

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    Join Date
    Feb 2011

    Exclamation how to set crossover frequency in car audio

    Hi to all,

    I have polk db401 in front not connected to fosgate 2 channel amp. polk momommc690 is connected to back thro fosgate amp. my head unit pioneer. i have following questions

    1) what is the best setting for hpf in head unit
    2) best setting in amp-lp,hp or allpass

    how to know whether gain setting and crossover frequency settings is right or not. if the settings are right, how to know it. if the settings are not right, then also how to know it. early reply is required.


  2. #2

    Member Sales Rating: (0)

    Join Date
    Dec 2003
    Chattanooga, TN


    Keep the gain under the halfway point and adjust it til it blends well with the front speakers.

    Without a sub you should just leave the crossovers off and run them fullrange.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D

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