Determining Qts from Qes and Qms?

Godzilla · 28th October 2011, 03:27 PM

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?

Thanks!
Zilla

AndrewT · 28th October 2011, 03:30 PM

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.

dvisves · 28th October 2011, 03:36 PM

Qts = Qms * Qes / (Qms + Qes)

28th October 2011, 03:27 PM	#1
Godzilla diyAudio Member Join Date: Nov 2005 Location: New York	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? Thanks! Zilla __________________ www.zillaaudio.com/bib/bib.asp www.ZillaAudio.com

28th October 2011, 03:30 PM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	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. __________________ regards Andrew T.

28th October 2011, 03:36 PM	#3
dvisves diyAudio Member Join Date: May 2007	Qts = Qms * Qes / (Qms + Qes) __________________ deevee

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