My DIY speakers "J&N"

At the beginning of my post I apologize for my English!
I will start the presentation with one project, which is in the initial phase, but has undergone several conceptual changes-"J&N"-2.
In order to save your time, I will allow myself a clarification:
-Everything in this project- idea, design the filters and the overall workmanship of the cabinets to the last detail was done by my hands.Not used "CNC" machine and 3D program, the lowdspeakers are- “SEAS-EXCEL”.
First option:
I started with measurement simulations;
https://scontent.fsof10-1.fna.fbcdn...=9652cf6d53df866c176691fdbd462027&oe=5FF16DEF.
N-1 graph characteristics of the speaker without filter,we have a peak of 106 dB.
https://scontent.fsof10-1.fna.fbcdn...=370ed971ea404b3d8721c0fbcc9bbfb5&oe=5FEF411C

N-2 graph shows the transfer characteristic of the filter in the frequency band 50-100 Hz is above the 0 dB level. It is useful to understand why in the passive filter the transmission ratio is greater than one? The answer to this question is given by a comparison of the input resistances . The minimum value of the input resistance of the speakers with filters (red curve) at a frequency of 90 Hz is 3.2 ohms. This is an acceptable value. If I select the cutoff frequency of the filter below, for example 200Hz, the input resistance will decrease to about 2 ohms. This will be too much load on the amplifier. The costs of creating or acquiring such an amplifier will be unacceptably high. A decrease in volume will also lead to a decrease in the input resistance, but to a lesser extent.
https://scontent.fsof10-1.fna.fbcdn...=370ed971ea404b3d8721c0fbcc9bbfb5&oe=5FEF411C
N-3 graph shows the sound pressure of 90dB of two W26FX001 speakers with a filter at an input voltage of 2.83V. It's not hard to guess that if we simulate the filter for the W18EX001 speaker, we will get a sound pressure of no more than 86 dB at an input voltage of 2.83 V. If we remain in the concept of building an AS with filters on passive elements, we will have to reconsider the choice of the mid-frequency dynamics, or to refuse 1 woofer speakers- W26FX001.
https://scontent.fsof10-1.fna.fbcdn...=78668aa13569f0e54afa93ac7d2d776b&oe=5FF243A8
My final choice is:
https://scontent.fsof10-1.fna.fbcdn...=7f2bad10e846cbb37dc3a586e1fa37db&oe=5FF218B9
Аnd the beginning:
https://scontent.fsof10-1.fna.fbcdn...=f3715b82d2b590341c173417d777ce20&oe=5FF0CA3C
https://scontent.fsof10-1.fna.fbcdn...=bc0aeda1a3759795403a4e1e88e49788&oe=5FF26695
https://scontent.fsof10-1.fna.fbcdn...=f320f8ca8f74556585ed823029744c91&oe=5FF18397
https://scontent.fsof10-1.fna.fbcdn...=5959ae600acdc6dff034344b05675817&oe=5FF14C84
https://scontent.fsof10-1.fna.fbcdn...=b434721076dbe605bfe1046b35b0fd71&oe=5FF1A85C
to be continued...
Joro

 

Wow, that is a ton of bracing there...

 

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Yes it is! And it's just the bass section.

 

Do you also post on audiocircle? Your work looks similar to another guy I've seen there.

 

Unless the actual enclosure walls are made out of cardboard, the bracing is too much. Especially with curved walls, there's not much flex. It won't do any harm, but you're losing inner volume and creating unnecessary weight.

With that said, it does seem like a cool project! Why did you go for the TMM, instead of MTM driver alignment for the mids and tweeter?