I didn't see a recommended weight for the VAS measurement in the quick-start guide.... maybe it's listed somewhere in the help docs but i haven't looked yet. I started adding weight (via magnets). The first few attempts gave me an error, saying the Fs was not changed enough to perform the calculation. At 50grams, i got a VAS value of 0.2419cuft.
Updated pic attached. Maybe i'll remeasure using the known-volume approach once my sub box build
is complete (hopefully some time this week). The volume has to be dead on, right? People generally mount the speaker basket-out so it doesn't take up an indeterminate amount of space? That might be tough for my box design.
I have some T/S params posted in my build thread (pasted below) that i dug up online somewhere... later i was unable to find them again, so i have no idea where i got them. They are completely different from what i've measured, so i'm guessing i must have found params for a different driver by accident. Glad i ditched my ported-design in favor of a 'safer' sealed setup. Still no idea how it's gonna sound. Guess i'll sim it in WinISD with these new params
Mystery online params i found:
Qts : 0.31
Vas : 0.753 cuft
Fs: 38.31 hz
Re: 1.5 ohm (dual 4ohm in parallel?)
Z: 2Ohm (dual 4ohm in parallel)