Need help with ssf real quick plz!

you need to ask yourself what frequency you want the subsonic filter to bet set at. if you choose it to be 25 hz like mine then u need to determine how many volts you should see on a DMM when playing a 25 hz sine wave through your CD player (compared to the number you get when playing a frequency at an octave higher, in this case 50hz). if you get 20 volts when playing 50 hz sine wave then u need to figure out how many volts are 24 decibels less than 20 volts. i dont know the math formula u can google it. when u figure that number out you would play that 25 hz sine wave through your system and dial your SSF setting up until you get that number.

 
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