Umbhali uhlala ngezinye izinto ezinethile kwezivali zokuthatha amandla, ngokushesha ngokupheleleyo, amasivali amabola amathathu, amasivali amabatifa amathathu, amasivali amakhulu, nemasivali we-diaphragm futhi okunye. Zonke izivali ezenethile zidinga ukuthi uzame ukususa ukwenzela iindawo ezihlukeleyo zezimpahla. Ama-manufacturer ezintathu ezisivali aziqondisiwe ukwenza lokho ngoba kufanele zibuyeleyiwe zonke izinto ezithile (ngokushesha, umlando), okungakwazi ukuyibuyela isigodlo, ukusuka nokulala okanye nokuhlula.
