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Determining Qts from Qes and Qms?
Determining Qts from Qes and Qms?
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Old 28th October 2011, 03:27 PM   #1
Godzilla is offline Godzilla  United States
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Default Determining Qts from Qes and Qms?

I've been simming drivers on OB lately using XLbaffle. It was puzzling to me that the software doesn't ask for Qts rather determining it from Qes and Qms. I multiplied and divided these specs and still can't understand how Qes and Qms determine Qts... can someone offer and explanation?

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Old 28th October 2011, 03:30 PM   #2
AndrewT is offline AndrewT  Scotland
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I think,
1/Qts = 1/Qes + 1/Qms

or restated:
Qts = 1 / [1/Qes +1/Qms]

it's the same arrangement of factors as in parallel resistances and in series capacitors.
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Old 28th October 2011, 03:36 PM   #3
dvisves is offline dvisves  United States
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Qts = Qms * Qes / (Qms + Qes)
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