Interesting bun fight. Let’s not forget that multiple smaller bass drivers will equal or better a large driver in terms of cone area. They will usually have lighter cones and can be made to go very low with dsp ala Kii.
Having heard all the various types of speakers over the years, including some mentioned I think the OP might find open baffles or horns worth investigating. Sadly not many options in OB unless you’re willing to go out on a limb.
Having heard all the various types of speakers over the years, including some mentioned I think the OP might find open baffles or horns worth investigating. Sadly not many options in OB unless you’re willing to go out on a limb.