Unfortunately your statement above is incorrect.
Please refer to my earlier post.
Neither the response nor the impedance of a dusted diaphragm is suited to the stock network or the equivalent.
As was stated earlier you need to get you hands dirty then you will learn and grow with this hobby. In time you will start to understand how to design a diy loudspeak (There is no other around it.)
In the diy loudspeaker space one persons opinion (which is quite often the case) could be another’s bullshit.
And the measurements don’t necessarily tell you if it works. You need to make things and listen like everyone else.
If you don’t feel that is the road you can build a JBL design as closely as you can and get a good result.
We’ve been over this a thousand time