Capacitor for 80hz cut off?

[620hpcrx 10+ year member]

I have a pair of Infinity 3.5s in my dash and I dont want any frequencys below 80hz or whatever would be good for 3.5s. I need to know what kind of capacitor to put on them please.

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[sumone 10+ year member]

from bcae:

 

[sumone 10+ year member]

oops -

that's

1/(2? * desired_crossover_frequency * speaker_impedance)

equals capacitor value.

ironic how I bought the site on cd and still find myself looking at it through the web...

 

[620hpcrx 10+ year member]

lol thanks for the help...so a 80hz crossover point would need a .00156 farad cap for a 4 ohm speaker??? Well thatswhat comes to mind for me...am I right???

 

[620hpcrx 10+ year member]

o wait calculated wrong

 

[620hpcrx 10+ year member]

4.9761146496815286624203821656051e-4 uhhh....wow...now i need some help with this number.

 

[620hpcrx 10+ year member]

ok im good now...about a 500mf cap.