You mean - PA drivers not sound is good, or just large woofers have got sound not good?
Audioholic midbass my guess - there are a lot of them. Morel SW9 SW10, HW9, Dynaudio MW182, MW190, Aliante (Phase Linear, Phase Evolution, Falstaff, Mac Audio) 12 Si LTD, from home - Accutone ceramic and...