ohm question
05-30-2005, 03:07 PM
#1
500 Watt CAFz'r
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Join Date: Feb 2005
Posts: 603
ok this maybe a stupid question but oh well
today in LA class i was really bored so i started thinking, how can a 2 way speaker be 4 ohm? are both coils(woffer and tweet) 2 ohm and then wired in series? or does the resistor have somthing to do with ohms? and what would happen if you disabled the tweet? would the speaker become 2 ohm? or 8? or what?
thanks alot guys and gals [img]graemlins/thumb.gif[/img]
today in LA class i was really bored so i started thinking, how can a 2 way speaker be 4 ohm? are both coils(woffer and tweet) 2 ohm and then wired in series? or does the resistor have somthing to do with ohms? and what would happen if you disabled the tweet? would the speaker become 2 ohm? or 8? or what?
thanks alot guys and gals [img]graemlins/thumb.gif[/img]
05-30-2005, 11:28 PM
#4
500 Watt CAFz'r
Join Date: Jan 2003
Posts: 708
yepper here is a preety good page on passive crossovers. explains quite a bit.
http://www.colomar.com/Shavano/crossover6db.html
What happens to the Impedance? Am I putting speakers in Parallel?
If you pick the same cross-over points for both the high-pass and the low-pass filter, then when you connect these together to the same power amp output, the impedance is the same as if it was a single speaker.
Why is this?
Since the speakers are now conducting on a limited frequency range, as long as those ranges do not overlap, the net effect (as far as your power amp can tell) is that its only a single speaker load. You are not putting speakers in parallel.
If you pick the same cross-over points for both the high-pass and the low-pass filter, then when you connect these together to the same power amp output, the impedance is the same as if it was a single speaker.
Why is this?
Since the speakers are now conducting on a limited frequency range, as long as those ranges do not overlap, the net effect (as far as your power amp can tell) is that its only a single speaker load. You are not putting speakers in parallel.
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