This isn't about theoretical impossibility, but rather *practical* limitations.
Despite this you can proceed forward as intended, but the result will have compromises (..potentially substantial compromises).
There are several full-range drivers available that will give you the bandwidth ON-AXIS that you are looking for, that's not the problem.
Just pick one, and enjoy whatever result you obtain. 😉
Fostex 206E, Omnes Audio L8/or Spec, Supravox (several models), etc..
The Sound it is always compromise! The main thing is as closely as possible achieve the ideal. So I ask members of the forum to share their ideas and knowledge. But a compromise may have to implement, but not changing the concept. And I want to choose the best driver for this purpose, and not to change the goal.
what is the ideal? why 200hz is the ideal?
. You can go the horn way. some mid will be able, when loaded, to reach 250hz, but unless that, what you ask is impossible. Its only possible with a fullrange, but then try to find a high eff, good sounding, fullrange.
Why do you want the 200hz xo, 400hz xo will sound dams good, and then you will have amazing mid quality with phl or audax.
Even for fullrange purist, you can see a lot of example where they use woofers up to 300-400hz.
I like full range drivers. Will be better if midrange start from 120 Hz, but.... more really and no big compromise 200-250 Hz. Interactive Frequency Chart - Independent Recording Network
Use EQ, listen to music, reaise up the 200 to 400 hz area, you will see that this section is mostly the fundamentals, bass, the sense of space in a recording.
but whatever, you can use a wideand driver with great result. however, I do not know, and beleive me, ive searched a lot, of fullrange driver, high efficiency with great sound. I would use the jbl le8t for this task. is it high eff though?
the audax is suppose to be able to go down to 300hz, but in my setup, its at 400hz that it starts to roll off.
I see alot of purist, Dave from planet 10, that accept to let their woofer play up to 400hz, I trust them mroe then a chart.
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I understand your concern, but so many great design of so many famous loudspeaker have xo at 300hz or 600hz or 1khz, that I really dont beleive in where the xo is placed. what matters the most, is your crossover design. thats what makes your speaker and what everybody knows
After time when I began to listen to the full range speaker (Zu), I love them and I saw a lot of advantages compared to traditional loudspeakers with 3-4 way xover a lot more expensive. The main disadvantage of full range speaker is not enough hard bass and that I should fix it.
I think that I made a choice. I think that for my goals this will be the best set 2 X 12 AE SBP in sealed box + LT + 2 X Supravox 165LB + Beyma TPL 150 in a sealed box. Speaker size turns out huge, more than 160 cm height, but After all I used to think, and my Zu 120 cm huge growth as well, but now everything is familiar))
If you "push" the fullrange compliment down low enough in freq. response, you could create a 2-box loudspeaker with the fullrange(s) + TPL on one box, and another box with your two vertical front baffle 12" drivers.
Ex.:
TPL + B200 and *series* connected Faital Pro *4* ohm 10FE200 as a .5 driver with a simple electrical (inductor) low-pass below 800 Hz (and dependent on baffle step compensation).
Both the B200 and the 10FE200 can work without any high-pass filter on the low-end + no loss in amplitude for baffle step compensation filters.
Then in another box right beside it,
AE 12" drivers with an appropriate low-pass that sums well at a lower freq..
Something like that would allow you to minimize the height (even if it spreads things out in width and floor-space). It would also be more linear, lower non-linear distortion, better linear decay, more efficient, etc..
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Each speaker (L&R) is composed of two loudspeaker cabinets opposed (side-by-side) - to keep things lower/shorter.
It's just another option like mounting woofers on the side of cabinets for the purpose of reducing loudspeaker height.
Now I understand that Yoy means. I can`t. I have not space for 4 big speakers. And limit for width 45 cm only.
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