Subwoofer to reach 10 Hz?

[guscas]

Hi.

I saw the video a long time ago ... meade916 in youtube...

infrasonic subwoofer flex to 7.3hz. bass sweep down to 7.3hz
https://www.youtube.com/watch?v=QZSPVvhYzH4

 

And I have decided to do one but with a subwoofer alone and reach 10Hz, if it is at 8Hz better.

What subwoofer models can you recommend that you can reach that frequency?

For the box there would be 2 possibilities as I have read in the forum:
1) Closed box and a 21 -inch subwoofer. It would be easier to make but bigger.
2) T-Line with an 8-12 inches and here I have doubts. Do you have to design the box for the 10Hz or for the FS of the subwoofer?
Thanks and regards.

[Joe X]

That's a crazy project no doubt but anyways, if you want some kind of air movement (preferably inside a car) at those low frequencies do sealed or 4th order bandpass and a high cone area, high Xmax,  high QTS subwoofer, also make sure that the bandwidth of your amplifier can go down to the frequency you are targeting.

[guscas]

Hello again.
I've been searching and I think the B2 RIOT10V2 D2 subwoofer can work for me:
Frequency response: 10 - 500 Hz
FS : 34.9Hz
QTS: 0.578
XMAX (P2P): 36mm

What do you think?

[Joe X]

At 10Hz you cannot hear anything, just feel some air movement, sub needs to be gigantic with large Xmax so that you can feel some air movement:

 

Crossfire XT3 18 is a possible candidate, 68mm xmax peak to peak and more than 3 times the cone area of a 10" subwoofer.

 

http://www.crossfirecaraudio.com/wp-content/uploads/2019/12/XT3-Spec-Sheet.pdf