kirk tarrant

bypassing amp in my buddies truck and i need 2 cap for the tweeters, can any recemond a value for a cap?

SQ Civic

iTrader: (3)

unless you have turn on pops, or are worried about sending sub-bass to the tweeter, or just worried in general they really aren't needed but,

The formula for a high-pass RC filter is :

Fc = 1/(2pi*R*C)

so, if we know the tweeter's (approximate) resistance, R, and the desired cutoff frequency, Fc (remember ... we want this number at least an octave below the intended active cutoff), the cap value is given by :

C = 1/(2pi*R*Fc)

where 2pi = 6.28

Example : 4 ohm tweet, intended active cutoff is 3kHz. So we want the protection cap cutoff to be ~1500Hz :

C = 1/(6.28*4*1500) = 0.00002654 = 26.5 uF (microFarads)

if using an 8 ohm driver, the value would be cut in half

regards, Mark

Tom.F.1

iTrader: (1)

I have a table for 6dB crossovers, but it doesn't work when i paste text and can't seen to figure out how to paste the file.

I'll try to PM it to you.

kirk tarrant

im not sure on the info on the factory dodge tweeter, ,,,,,
maby il use the caps off my factoty infinity tweeters from my durango

SQ Civic

iTrader: (3)

what are you trying to accomplish with the caps?


Mark

kirk tarrant

need to bypass the factory amp which people tell me had the crossover built into it,

SQ Civic

iTrader: (3)

do you have the option to run them active?

Mark

kirk tarrant

nope. using head unit to power it
told him to but a 4 channel and a set of comps.

SQ Civic

iTrader: (3)

what kind of deck? is it a factory model? you can run active 2 way off the deck without amplification if you have flexible x-overs..

Mark

kirk tarrant

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