subsonic filter for turntables

danger boy
danger boy Posts: 15,722
edited December 2007 in Electronics
can someone explain what the subsonic filter does on a pre amp and why it's important to have/use it when listening to albums.

it seems modern day pre amps/receivers don't have that subsonic filter... is that a bad thing then?
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Post edited by danger boy on
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  • strider
    strider Posts: 2,568
    edited December 2007
    The way understand it, the subsonic filter removes the signal in the lower, inaudible, frequency range. Ever noticed your midrange drivers jumping up and down when you first put on an album? It's designed to tame that. Some people see it as a work around to a problem. I found I didn't need to engage mine after I made certain my platter was absolutely level.
    Wristwatch--->Crisco
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