That's basically what the factory does. I don't recommend this but you could do it. Reason being is that they aren't real crossovers. So it literally is just like a hard stop to anything below whatever size capacitor you get.
The crossovers that come with your speakers have droop built in to the circuit. Probably something along the lines of a -12 or -6db at whatever frequency that Focal has determined for your speakers.
I recommend just running a new wire for the tweeters to the focal crossover. Just go to the front kicks and splice in the front doors for the woofer amp spot on the crossover. Than splice at the tweeter connection and run a new wire down to the crossover and back up to the new tweeter in the tweeter amplifier spot. You don't need any crazy wire. Simply stuff would work just fine as the stock wiring is like 18-20ga.
Now.. if you REALLY want to use a cap... figure out what the crossover frequency is and than the speaker resistance. I'm guessing 4 ohm. Than go here http://www.carstereo.com/help/Articles.cfm?id=1
So like if you have 2K Hz @ 4 ohms you would need a capacitor of about 20uf (micro farad).
On a side note... using a cap(bass blocker) isn't necessarily a bad thing if you use them as like a safety when going full active or using just the aftermarket amplifier built in crossover. Find the FS of your tweeters, double that number and use that size cap. It should be a lot lower than the frequency you plan on using as your crossover point but greater than the tweeters FS. This way you don't accidentally damage your tweeters when setting your crossovers.
The crossovers that come with your speakers have droop built in to the circuit. Probably something along the lines of a -12 or -6db at whatever frequency that Focal has determined for your speakers.
I recommend just running a new wire for the tweeters to the focal crossover. Just go to the front kicks and splice in the front doors for the woofer amp spot on the crossover. Than splice at the tweeter connection and run a new wire down to the crossover and back up to the new tweeter in the tweeter amplifier spot. You don't need any crazy wire. Simply stuff would work just fine as the stock wiring is like 18-20ga.
Now.. if you REALLY want to use a cap... figure out what the crossover frequency is and than the speaker resistance. I'm guessing 4 ohm. Than go here http://www.carstereo.com/help/Articles.cfm?id=1
So like if you have 2K Hz @ 4 ohms you would need a capacitor of about 20uf (micro farad).
On a side note... using a cap(bass blocker) isn't necessarily a bad thing if you use them as like a safety when going full active or using just the aftermarket amplifier built in crossover. Find the FS of your tweeters, double that number and use that size cap. It should be a lot lower than the frequency you plan on using as your crossover point but greater than the tweeters FS. This way you don't accidentally damage your tweeters when setting your crossovers.
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