Quote Originally Posted by Panomaniac View Post
They make measuring the drivers a snap. Once you get accurate T/S parameters for your drivers, then GM can proceed, if he has the time. You'll want to define your maximum dimensions before he starts, tho. That way he won't go to the trouble of designing an optimum box, only for you to find it too big. Figure out how big you can go first, then see if he can do something with that. Right, GM?
It would certainly be best, but in the scheme of things, accurately finding each driver's Fs since he's driving them with 300Bs is all that really needs measuring assuming his friend's speaker's 'footprint' is still acceptable and even these can be found 'close enough' empirically via vent tuning and white noise to find where the woofer stalls out same as most DIYers once did.

Really, T/S specs are all about seeing how small a cab one can get away with and still have acceptable [mid] bass response. When size isn't a major issue, tuning flexibility normally increases with increasing size up to I.B. requirements.

Anyway, I already 'ran the numbers' earlier this week that should be vent tunable from ~27-42 Hz depending on driver Fs, just can't do an accurate sim without T/S, so just a matter of writing up a response while I'm in 'rain delay' mode.

GM