posted
Ok I have some home audio speakers that the woofer's surround is getting rotten. so I want to put some car audio subwoofers in it instead. Only problem I have is wiring, Right now with tweeter, midrange, and woofer it is at 8ohms. I don't know how many ohms each one is, but I want to make it a total of either 8ohms or 4ohms. I'm sure someone here who know home audio will know what they usually have for ohms per speaker. So can anyone help me as to how many ohms my sub should be?
posted
the impedance will change depending on the frequency you play...
if you use a 4 ohm woofer, when playing the bass frequencies, the impedance will be around 4 ohms...
when playing the mids, and highs, it will be 8 ohms...
the crossover in them won't be setup for a 4 ohm woofer, so the crossover point will be different, but considering what you're doing , I don't think you would really care anyway...
there's nothing stopping you from putting 4 ohm woofers in the existing speakers, but the bass may over power the mids, and highs, as they are 8ohms (1watt into 8 ohm = 2.83 volts) and the woofer is 4 ohms (2.83 volts into 4 ohms = 2watts) so the woofer will be getting twice the power that the old one was...
but, having said that, car audio subs are often less efficient than old home audio woofers, so it might just all even out anyway
posted
Yeah, but I don't want to over power my amp and blow it. So I don't want to put a final ohm load of under 4 ohms. I have some 8ohm subs, I might throw those in to test and see if anything happens.
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