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Old 15th August 2012, 12:33 AM   #1
diyAudio Member
Join Date: Aug 2012
Default Passive Crossovers in Series

I was plannin' on wiring a low pass crossover to 2 4ohm subs to a high pass filter to 1 4ohm tweeter in a series.. Is this Idea even possible ?
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Old 15th August 2012, 03:41 AM   #2
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Join Date: Apr 2011
Location: Anchorage AK
the question is real hard to understand, but i'll try and answer the best i can. kind of sounds like you want to series low-pass into a pair of subs (2ohm load) then out into a high pass -->tweeter, then back. no. the low-pass coil will not pass the higher frequency of the single circuit, and then the capacitor will block the low fequencies. being 2 ohm on the low pass will change the frequency, and you may end up with a real narrow mid-rANGE ONLY, PLAYED THROUGH ALL 3 drivers, with everything above and below filtered out. the proper way, would to do the high pass and low pass in parallel, as this is how cross-overs are built. it does not change the ohm load, since the different frequencies go to only one driver at a time. however, you would need the low-pass section to be set to the proper cross-over lpf of a 2-ohm load, and then the high-pass setion frequency to a 4 ohm load. i would suggest to look up "diy cross-over" and go from there. you would run them in parallel, and likely need to put a resistor in to ballance the power output, or the tweeter will be comparatively quiet. why not run 2 tweeters in the circuit and use a 2ohm cross-over?
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