An acoustic assembly (100; 200) comprising: an enclosure (101; 201); a first transducer attached to the enclosure (101; 201) and configured to emit sound along a first path over a first frequency range; a second transducer attached to the enclosure (101; 201) and configured to emit sound along a second path over a second frequency range; a third transducer attached to the enclosure (101; 201) and configured to emit sound along a third path over a third frequency range; and an acoustic horn (111; 234) attached to the enclosure (101; 201) and positioned to at least partially extend into the first path and the second path for adjusting at least one beamwidth in a crossover region of the first frequency range and the second frequency range, wherein the acoustic horn (111; 234) is positioned to at least partially extend into the third path for adjusting at least one beamwidth in a crossover region of the second frequency range and the third frequency range, wherein the acoustic horn (111; 234) includes: a waveguide (112; 235) positioned to at least partially extend into the first path, wherein the waveguide (112; 235) includes at least one first through-hole aperture; and two integrators (115; 242, 243) attached to the waveguide (112; 235) and positioned to at least partially extend into the second path and the third path, wherein each of the two integrators (115; 242, 243) includes at least one second through-hole aperture for directing sound waves there-through, wherein the acoustic horn (111; 234) further comprises four lenses (113;236, 237, 238, 239) positioned to at least partially extend into the second path and two plugs (114; 240, 241) positioned to at least partially extend into the third path, wherein the lenses (113; 236, 237, 238, 239) and the plugs (114; 240, 241) are attached to the integrator (115; 242, 243), wherein each of the four lenses (113; 236, 237, 238, 239) includes at least one third through-hole aperture, wherein the two plugs (114; 240, 241) are laterally spaced from one another along a first plane, wherein the acoustic horn is aligned along the first plane, and wherein the two plugs (114; 240, 241) and the two integrators (115; 242, 243) form two sealed chambers. an enclosure (101; 201); a first transducer attached to the enclosure (101; 201) and configured to emit sound along a first path over a first frequency range; a second transducer attached to the enclosure (101; 201) and configured to emit sound along a second path over a second frequency range; a third transducer attached to the enclosure (101; 201) and configured to emit sound along a third path over a third frequency range; and an acoustic horn (111; 234) attached to the enclosure (101; 201) and positioned to at least partially extend into the first path and the second path for adjusting at least one beamwidth in a crossover region of the first frequency range and the second frequency range, wherein the acoustic horn (111; 234) is positioned to at least partially extend into the third path for adjusting at least one beamwidth in a crossover region of the second frequency range and the third frequency range, wherein the acoustic horn (111; 234) includes: a waveguide (112; 235) positioned to at least partially extend into the first path, wherein the waveguide (112; 235) includes at least one first through-hole aperture; and two integrators (115; 242, 243) attached to the waveguide (112; 235) and positioned to at least partially extend into the second path and the third path, wherein each of the two integrators (115; 242, 243) includes at least one second through-hole aperture for directing sound waves there-through, wherein the acoustic horn (111; 234) further comprises four lenses (113;236, 237, 238, 239) positioned to at least partially extend into the second path and two plugs (114; 240, 241) positioned to at least partially extend into the third path, wherein the lenses (113; 236, 237, 238, 239) and the plugs (114; 240, 241) are attached to the integrator (115; 242, 243), wherein each of the four lenses (113; 236, 237, 238, 239) includes at least one third through-hole aperture, wherein the two plugs (114; 240, 241) are laterally spaced from one another along a first plane, wherein the acoustic horn is aligned along the first plane, and wherein the two plugs (114; 240, 241) and the two integrators (115; 242, 243) form two sealed chambers. a waveguide (112; 235) positioned to at least partially extend into the first path, wherein the waveguide (112; 235) includes at least one first through-hole aperture; and two integrators (115; 242, 243) attached to the waveguide (112; 235) and positioned to at least partially extend into the second path and the third path, wherein each of the two integrators (115; 242, 243) includes at least one second through-hole aperture for directing sound waves there-through, wherein the acoustic horn (111; 234) further comprises four lenses (113;236, 237, 238, 239) positioned to at least partially extend into the second path and two plugs (114; 240, 241) positioned to at least partially extend into the third path, wherein the lenses (113; 236, 237, 238, 239) and the plugs (114; 240, 241) are attached to the integrator (115; 242, 243), wherein each of the four lenses (113; 236, 237, 238, 239) includes at least one third through-hole aperture, wherein the two plugs (114; 240, 241) are laterally spaced from one another along a first plane, wherein the acoustic horn is aligned along the first plane, and wherein the two plugs (114; 240, 241) and the two integrators (115; 242, 243) form two sealed chambers.