Lewis & Short

clango, no perf., ĕre, 3, v. n. [kindred with crocio, glocio; cf. clamo and κλάζω], to clang, to sound, resound (rare; only in ante-class. and post-Aug. poets): crepitu clangente, Att. ap. Non. p. 463, 16: horrida clangunt signa tubae, Stat. Th. 4, 342; cf.: luctificum clangente tubā, Val. Fl. 3, 349: clangunt aquilae, Auct. Carm. Phil. 28.