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Topic: Monitor Ohms Check - Please |
Eldon Cangas
From:
Ontario, Canada
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Posted 13 Apr 2009 7:39 am |
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I'm configuring 4 small personal stage monitors like the diagram below. So far we're trying speakers we have lying around. One pair of them is likely more efficient - I don't know which yet. Please check my calculations I think the amp should see 5.3 ohms. Thanks.
|---------- 8 ------ 8 -----|
| ohms ohms |
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|----------- 4 ------ 4 -----|
| ohms ohms |
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| _________ 5.3 _________ |
amp sees this ohms?? |
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Eldon Cangas
From:
Ontario, Canada
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Posted 13 Apr 2009 7:42 am Ohms Clarification
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| Not a great diagram above but we have 2 8 ohm spkrs in series, 2 4 ohm spkrs in series and that combination in parallel. Thanks |
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Gary Baker
From:
Charlotte, North Carolina
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Posted 13 Apr 2009 7:54 am
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Been a while but if memory serves me right the formula is this:
Series = X + X so 4 + 4 = 8
Series = 8 + 8 = 16
Parallel = X times X divided by X + X
so 8 x 16 = 128
8 + 16 = 24
so 128 divided by 24 = 6.4 Ohms
Hope that's right - others may correct me.
Blessings, Bo |
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Michael Maddex
From:
Northern New Mexico, USA
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Posted 13 Apr 2009 2:18 pm error correction
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Gary, your formulas are right, but your arithmetic is awful:
128 / 24 = 5.33
HTH.
_________________
"For every expert, there is an equal and opposite expert." -- Arthur C. Clarke |
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Gary Baker
From:
Charlotte, North Carolina
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Posted 13 Apr 2009 3:55 pm
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Ha . . . . Big Heart . . . small brain  |
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