What frequency does a 3.3uf capacitor filter out?

[LoudSound]

I looked at my oem dash speakers in my subaru, theyre little 3 inch mids/tweeters made of paper and they have a capacitor wired in 3.3uf 25v(thats what it says on it). Speaker says 6ohm impedance. Im assuming its a high pass filter, can someone tell me what its filtering out? Im just curious , im used to having filters in the headunit i dont know much about this oldschool stuff

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[metalheadjoe 10+ year member]

Passive filters are not old school stuff. They are pretty standard.

Start here: https://www.electronics-tutorials.ws/filter/filter_3.html

 

[audiobaun 5,000+ posts]

I looked at my oem dash speakers in my subaru, theyre little 3 inch mids/tweeters made of paper and they have a capacitor wired in 3.3uf 25v(thats what it says on it). Speaker says 6ohm impedance. Im assuming its a high pass filter, can someone tell me what its filtering out? Im just curious , im used to having filters in the headunit i dont know much about this oldschool stuff

It should be filtering out the lower frequencies to keep the speaker from damage/blowing

 

[Doxquzme Premium Member]

That's a 6db crossover at approximately 8000Hz.