I want to build a cabinet form a Rockwood NY6510 subwoofer. In order to get an idea of the cabinet design I use two online software:
Fs = 55.7 Hz Qms = 3.5 Qes = 1.2 Vas = 17.0 lt Qts = 0.9
Qtc = 1.0 Port diameter = 10cm Ported Box desing
I'm confused since I get two completly different results using the same input parameters .
From diyaudioandvideo I get
Vb = 8.48 ft3 = 240.15 lts = L x W x H f3 = 17.37 Hz fb = 24.51 Hz Dv = 1 in = 2.5 cm Lv = -0.39 in = -0.98 cm
But from ajdesing I get a negative f3 = -29 and the fb = Fs = 55.7.
Did I made some mistake? Which online sfw should I trust?
The results for the closed box design are the same for both the appliations:
Vb = 2.56 ft3 = 72.47 lts = L x W x H f3 = 48.65 Hz fb = 61.89 Hz