Home Closed Cabinet Bass Reflex Cabinet LspCAD Lite Volume Calculator

 
Closed Cabinet
Q factor Qts to be entered with two decimals
Please enter decimal separators as "."
------------------------------ Driver ------------------------------- -------- Loudspeaker ------
Resonance frequency
fs in Hz:
Equivalent volume of
compliance Vas in litre:
Total driver Q factor Qts: total Q factor Qtc:
Recommended: 0.71
 
Volume in litre: 1)
Cut-off frequency f3 (-3dB) in Hz:
Cut-off frequency f8 (-8dB) in Hz:
Efficiency in dB (1W/1m):
1) Calculation is our recommended value for damped speakers. A bigger volume is possible.
Non-damped speakers are calculated in brackets according to the formular: α = (Qtc/Qts)2-1, Vbox=Vas/α
Copyright © Iris Strassacker, 2003-2013. All rights reserved - Warranty excluded

Total Q factor Qts correction
Resistors, cables or a coils that are being used to connect a loudspeaker show a DC resistance. This DC resistance has an influence on total Q facto Qts and, therefore, needs to be considered. The following calculator makes it a little bit easier for you; the result is automatically entered into to calculator at the top.

Qts correction calculator
(Qts-Correction)
Q factors Qes, Qms to be entered with two decimals
Please enter decimal separators as "."
------------------------------ Driver ------------------------------- ----- Crossover, Cable -----
Electrical Q factor Qes: Mechanical Q factor Qms: DC resistance Re: Coil's DC resistance R ... in Ohm:
Qts old of driver only:
  Qts new with cable, coil, ...:
The original formulas kindly provided by Manfred Hoffbauer, mh-audio.
Copyright © Iris Strassacker, 2003-2013. All rights reserved - Warranty excluded

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