Woofer bụ nke electromagnet, ihe nkiri Cil na mpi, nke na-atụgharị ugbu a n'usoro n'usoro. Principleskpụrụ nke physics bụ na mgbe ọ na-aga n'ihu site na coil, a na-emepụta ihe elektrik, na ntụzi nke ndọta bụ iwu aka nri. Ka e were ya na nkwuwa okwu na-egwu c na 261.6hz, onye na-ekwu okwu na-arụpụta ihe nke 261.6hz arụ ọrụ na-eme mgbanwe. Ọkà okwu ahụ na-arụpụta ụda mgbe coil, ya na ihe nkiri na-ekwu okwu, na-apụta ebili mmiri, nke a na-ebufe ikuku gbara ya gburugburu. [1]
Agbanyeghị, n'ihi na ebe a na-ebugharị ụgbọ mmiri nke mmadụ nwere ike ịnụ ihe dị oke ọnụ ahịa, ọnụnọ ụgbọ mmiri bụ 1.7cm - 17M - afọ 20 00HZ), yabụ, a ga-edobe mmemme asụsụ zuru oke. Ndị na-eme ka electromagnetic na-ejikọkarị sistemụ elektrọnik (gụnyere: magplet ụda Coil, nke a makwaara dị ka Coll Elect). Usoro ebili mmiri (gụnyere: ihe nkiri ụda, nke ahụ bụ, ọkụ diaphragm ahịhịa mkpuchi), na-akwado usoro (gụnyere: etiti bezin.). Ọ na - arụ ọrụ otu a dị n'elu. Usoro nke ntụgharị ume sitere na ike eletrik na ike ndọta, wee si ndọta ike na-efe efe.
Ọkà okwu bass na ọkà okwu na-ekwu okwu, ogologo ọmịiko, na-eme ka ndị mmadụ nwee obi ụtọ, ma nwee ọtụtụ mgbe, ụlọ mmanya, ogbo na ebe ntụrụndụ ndị ọzọ.
