That is an interesting idea.
Facing one up and one forward would keep the highs from cancelling each other out and that is where the problem is when using more than one full range driver.
I have been thinking of this for a while, BTW.
The lows would couple and increase bottom end output, and that would give you back some of the baffle step loss.
If you build one and send it to me, Ill measure it for you so you can see what it does. You just have to cover the shipping cost.
I'm down with that, Danny, but honestly, when I look at all the 3" full rangers on Parts Express I just don't know how best to evaluate them as good candidates, that's where I'm seeking guidance.
With some drivers it looks like price could get so high that it'd make more sense to build something bigger and likely better...my thought would be to keep it cheap and cheerful. Maybe it would help to define some parameters, price per driver could be a good place to start.
I guess I see this as a fairly simple build that perhaps many could do once a little design and prototyping is done. Where's the sweet spot, everybody? I'd like to see total material cost at something less than $150 give or take, is that doable?