I came across this web page while trying to learn about Ohms. Thought some of you beginners out there would like to read this. Has some very informative information.
The whole subject of impedance gets blown out of all proportion. In reality it's so simple. As most individual drivers are 8Ω, if you are paralleling them you simply divide 8 by the number of drivers. Two: 8/2=4, three: 8/3=2.67 etc. There is simply no need to go into high mathematics to work out what a total impedance will be.
It's slightly trickier if you're using cabs with different impedance ratings, but the total impedance (R) =
1/([1/R1] + [1/R2] + [1/R3] + ...)
where Rn is the impedance of each attached cabinet/speaker wired in parallel. Still not that difficult .
No Sir it is not. With differing impedances you convert into 8Ω blocks. Example 4Ω in parallel with 8Ω. 4Ω is two parallel 8Ω blocks so 4Ω (8x2) plus one 8Ω block = 3 8Ω blocks. 8/3 is 2.67Ω. It IS so simple.
No Sir it is not. With differing impedances you convert into 8Ω blocks. Example 4Ω in parallel with 8Ω. 4Ω is two parallel 8Ω blocks so 4Ω (8x2) plus one 8Ω block = 3 8Ω blocks. 8/3 is 2.67Ω. It IS so simple.
How is that different? 1/[1/4] + [1/8] = 8/3
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