How low can TC9 go in OB/dipole?

[wonderfulaudio]

Hi,

I am building a LXMini inspired project.
I intend to broaden the overlap of the 6" woofer and full-range TC9 by doing something like this https://www.diyaudio.com/forums/att...um-monopole-dipole-speakers-raw-crossover-png (Pls see this post for more details, https://www.diyaudio.com/forums/mul...sum-monopole-dipole-speakers.html#post4227362).

The linked project has 200Hz and 2KHz as crossovers as below
1) woofer alone below 200Hz,
2) both drivers between 200Hz and 2KHz
3) and only full-range above 2KHz.
Do note that both drivers are at -6dB in the over lap region.

I would like to use 300Hz and 1.2KHz for my project.
It looks like TC9 may not go as low as 300Hz but then its running at -6dB right from 1.2K and lower, so may be it can. How low can I go with TC9?

Thanks and Regards,
WA

 

[Juhazi]

Test with TC9 alone as dipole, with and ithout xo. Look at distortion at various spl!

I guess it gets in trouble below 600Hz and about 90dB/1m... And without electric highpass it will sound really bad hitting Xmax trying to play low frequencies

 

[waxx]

The TC9 is not fit for that, better look for a better driver like the Faital 3FE25. That Faital will get there easely and does not cost much more while it's also a great driver. With the TC9 you will never hit that low without and ported or TL cabinet.

 

[Pano]

My experience with the TC9FD and the 3FE25 on open baffle is that it's hard to get anything below Fs. I normally would not use it that low, tho.