If you used the term omnidirectional as it means the only possible reply to you are the Ohm Walsh speakers. They are though not good speakers objectively. Otherwise no other boxed speaker with or without a horn is omnidirectional, which means 360 degree sound emission.I am in the market for wide dispersion/large soundstage speakers.
Basically for the enveloping sound.
My research has benn leading me to ohm walsh.
If you have heard of omnidirectional speakers that can provide the imaging and bass response of direct firing speaker please do share your thoughts.