Hi: suppose I want to make a speaker with an 8 ohms woofer and a 4 ohms tweeter. Would this be reasonable? That would be all.
http://www.audiokarma.org/forums/editpost.php?do=editpost&p=4924877
http://www.audiokarma.org/forums/editpost.php?do=editpost&p=4924877
well, you can find tons of info by searching
http://www.troelsgravesen.dk/Diy_Loudspeaker_Projects.htm
http://www.troelsgravesen.dk/Diy_Loudspeaker_Projects.htm
Hi stf92,
There are quite a number of designs that have 8 ohm woofer and 4 ohm tweeters. If your amp can handle 4 ohm loads properly, you're fine.
The impedance fluctuation of dynamic drivers, especially woofers, are quite huge. Some drivers may be rated at 8 ohm but their impedance rises to say 50ohm at high frequency and that's all right. Your mileage may vary but I would say matching a 4 ohm tweeter to an 8 ohm woofer is reasonable.
There are quite a number of designs that have 8 ohm woofer and 4 ohm tweeters. If your amp can handle 4 ohm loads properly, you're fine.
The impedance fluctuation of dynamic drivers, especially woofers, are quite huge. Some drivers may be rated at 8 ohm but their impedance rises to say 50ohm at high frequency and that's all right. Your mileage may vary but I would say matching a 4 ohm tweeter to an 8 ohm woofer is reasonable.
Thanks for your kind reply. The amp will be a TDA7294 integrated circuit. I was just looking for the data sheets I keep in my desk, and do not find them. I'll look at the web.
I think what matters is the amp output impedance vs freq, although I do not think such a curve will be in the data sheets. Well, you've given me the fundamental advice: amp must be able to drive 4 ohms. Thanks a lot.
I think what matters is the amp output impedance vs freq, although I do not think such a curve will be in the data sheets. Well, you've given me the fundamental advice: amp must be able to drive 4 ohms. Thanks a lot.
A curious statement on circuits, in particular about crossovers.
Hi: This statement refers to a circuit you'll be able to see here. The rightmost branch, that containing C3, I will cut it so we are speaking of the series combination of C2, R3 and VC3. For all I know from circuit analysis, any permutation of those three components, for instance R3, C2, VC3 won't make any difference at any point in the circuit.
But, as is logical, I acknowledge there are people who knows more than I do. Can somebody tell me whether I am wrong?
Hi: This statement refers to a circuit you'll be able to see here. The rightmost branch, that containing C3, I will cut it so we are speaking of the series combination of C2, R3 and VC3. For all I know from circuit analysis, any permutation of those three components, for instance R3, C2, VC3 won't make any difference at any point in the circuit.
But, as is logical, I acknowledge there are people who knows more than I do. Can somebody tell me whether I am wrong?
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