2-driver TBW3-871S-ML-TL project

[joensd]

Hi there,
so far I experimented a little with the Tangband W3-871S for my PC-setup (nearfield).
I tried John Krutkes small sealed and a ML-TL which you can see here .
Due to my motivation to further experiment but also to some serious lacquer experiments that´ll probably force me to scrap one of my prototypes
I´m gonna go now for 2 drivers per channel.

Besides the obvious ELF1.5 or maybe a push-push ML-TL
I got the idea to build something like a small "Thor".

As I understand 2-driver-ML-TL-design, you´ve got two woofers that drive the line from two different
offset positions so the "3/4Lambda SPL-holes" are at two different frequencies
and would be not as strong as with one driver.

Now Martin King´s "Two driver.pdf" tells me
to simulate that with the average position of the two drivers which I did.
I get similar results (but higher SPL due to parallel) to my first ML-TL in a bigger enclosure with the same lenght.

Now the big questions is:
Will it work as simulated and can I just take 2 positions on the line
that get me (in average) the simulated driver offset
or is there maybe a golden ratio/rule (maybe as close as possible) to go for?

I´ll include graph and data for a sanity check for those interested:

line lenght=15.75in
So=Sd=31in^2
offset=0.4
port diameter=1.81in
port lenght=1.575in


Thanks a heap for da hints!
Regards
Jens