posted
alright say you have a 3 way crossover and all of your components on it are 4 ohm... what load would be on the amp?
Posts: 352 | From: Scranton , pa | Registered: Jan 2006
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posted
4ohm. Assuming none of the speakers are playing the same frequency range, and the midrange is bandpassed and not just high passed and let roll of naturally. For any frequencies in which two speakers are playing at the same time, it would be 2 ohm. I'm assuming there is no way all 3 speakers could be playing the same frequencies at the same time.
quote:Originally posted by Andy Jones: 4ohm. Assuming none of the speakers are playing the same frequency range, and the midrange is bandpassed and not just high passed and let roll of naturally. For any frequencies in which two speakers are playing at the same time, it would be 2 ohm. I'm assuming there is no way all 3 speakers could be playing the same frequencies at the same time.
^^now I was wondering about that...
say i've got my horns on the highpass, x'ed at about 700...with mids on the bandpass, all the way open from 75hz - 22khz.
what's happening between 700 - 22khz?
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posted
Assuming both are 4 ohm, and you have them wired in parrellel on the same amp--it would be 2 ohm.
Of course, there is not a 7 that I am aware of that will play up to 22khz, so once that 7 starts rolling off and simply can't play that high you would go back to 4ohm.
That would also mean you have a horn with efficiency over 100/dbs wired to the same amp channel as a 7" which probably has efficiency of around 89dbs and no good way to control them separately and have a system that sounds like total ass. Just a guess though
posted
lol bastard. dedicated amps all the way around...one active crossover. I remember reading/hearing somewhere else that speakers overlapping frequencies on one crossover will cause a drop in ohm load...?
didn't understand that if they're all on separate amps.
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quote:it would all be for nothing without my favorite cawk-smoker NAvi
quote:Originally posted by deaf tones: lol bastard. dedicated amps all the way around...one active crossover. I remember reading/hearing somewhere else that speakers overlapping frequencies on one crossover will cause a drop in ohm load...?
didn't understand that if they're all on separate amps.
As Andy stated, ohm load stays constant on the amp (for active setups) BUT there could be a DIP in overlapping frequency response due to phase problems.
(Was that what you might have read? I recall E. Holdaway reffering it as frequency suckouts)
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