I tried out WinISD today. Modelled a sealed CSS SDX15 and compared it against Ilkka's actual test results of the same.
The results were poor. For example, WinISD modelled a maximum spl at 20Hz as 107dB while Ilkka's tests only produced 99dB. The frequency response curves were quite different from each other too. This was a simple sealed box, vented box would be worse especially with large signal behaviour.
So the question is do you believe your modelling? People don't seem to check their "as built" results. :gulp:
The results were poor. For example, WinISD modelled a maximum spl at 20Hz as 107dB while Ilkka's tests only produced 99dB. The frequency response curves were quite different from each other too. This was a simple sealed box, vented box would be worse especially with large signal behaviour.
So the question is do you believe your modelling? People don't seem to check their "as built" results. :gulp: