With just a few watts only on a very small scale ie headphones. With more
power the fuller range Walsh drivers aka dale harder. Otherwise two ways
with the simple crossover designs. For full range bass off just a few watts
in most any room large drivers in bigger boxes needed. Horn loading
helps. That's how most speakers for pro use are designed, large and horn
loaded for maximum efficiency.
You can't change physics. Pressurizing a room at low frequencies requires
some muscle however one gets it. Headphones can deliver needed spl at
all frequencies with fewest watts due to proximity to eardrums.
power the fuller range Walsh drivers aka dale harder. Otherwise two ways
with the simple crossover designs. For full range bass off just a few watts
in most any room large drivers in bigger boxes needed. Horn loading
helps. That's how most speakers for pro use are designed, large and horn
loaded for maximum efficiency.
You can't change physics. Pressurizing a room at low frequencies requires
some muscle however one gets it. Headphones can deliver needed spl at
all frequencies with fewest watts due to proximity to eardrums.