Phase, can I run 18db woof with 6db woof circuit ?

In a 2-way, imagine a loudspeaker crossing 18db @ 1.2khz to the tweeter.

I’d like to add a bass box to run alongside of the 2-way loudspeaker.
Another woofer with a single inductor (to add bass or baffle step).

That inductored woofer run in parallel with the entire 18db crossed 2-way loudspeaker.


I’m thinking no because every 90 degrees is more delay.
So the 18db crossed woof would be delayed by ¾ wavelength while the 6db baffle step woofer would only be ¼ wavelength delayed…….
They would be 180 degrees out.

Sounds about right ?
 
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Does this help?
 

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hmm, basically use a 12db ckt that is only 90 degrees out of phase from the 18db ?


Below is my original idea (yea I asked before but hoping the different title can catch some x-over gurus here).
 

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You've now made it clear that you were interested in the 1k2 2-way crossover interacting with the 200Hz 0.5-way.

I've made it clear that the polarity of your 18dB crossover is a factor and you might tell us which it is.

Do you have some measurements or further relevant information, or are sims sufficient? Would you like to see other kinds of sim?
 
An 18dB crossover alone, is proof that you can have phase not lining up and still get good results.

Ok, so your lobes will point up or down, maybe that's a good thing, it depends on the situation.

Once the levels drop far enough, phase really doesn't matter.