I recently purchased 2 Alpine Type S 12" with the Dual 2 Ohm Voice Coils.
I started doing my calculations on how much air space I'm going to require.
I started by calculating how much air space I'm going to need based on the recommended Qtc of .86 from the manufacturer, and i get a volume of 2.04 ft/3.
But my trouble comes from the fact that the manufacturer lists 1.25 ft/3 as the optimum air space to get a Qtc of .86
I calculated this by hand and with an online calculator using my Theile/Small parameters for my driver. Is there something I'm Missing Here? I'm listing the Theile/Small parameters below if anybody wants to double check for me and let me know what I'm doing wrong
Xmax 12.9 mm
Power Handling RMS/Peak 300/900W
Any help would be greatly appreciated.