Woofer igizwe na electromagnet, coil na horn film, bihindura amashanyarazi mo mekanike. Ihame rya fiziki ni uko iyo amashanyarazi anyuze muri coil, electromagnetic field irakorwa, kandi icyerekezo cy'imbaraga za rukuruzi ni itegeko ryo mu kuboko kw'iburyo. Tuvuge ko indangururamajwi icuranga C kuri 261.6Hz, indangururamajwi isohora 261.6Hz mechanical wave hanyuma yohereza C wave adjustment. Indangururamajwi ikora amajwi iyo coil, hamwe na filime y'indangururamajwi, bisohoye amashanyarazi, yoherezwa mu kirere kiyikikije. [1]
Ariko, kubera ko uburebure bw'umuraba w'amatwi y'umuntu bushobora kumva ari buke, uburebure bw'umuraba ni 1.7cm -- 17m (20Hz -- 20 00Hz), bityo porogaramu rusange y'indangururamajwi izashyirwa muri uru rwego. Indangururamajwi z'amashanyarazi zigizwe na sisitemu y'ingufu za electromagnetic (harimo: magnet voice coil, izwi kandi nka electron coil). Sisitemu y'umuraba w'amajwi (harimo: filime y'amajwi, ni ukuvuga icyuma gitwikira umukungugu w'ihembe), sisitemu yo gushyigikira (harimo: frame y'ibuye, nibindi). Ikora nk'uko byavuzwe haruguru. Uburyo bwo guhindura ingufu buva ku ngufu z'amashanyarazi zijya ku ngufu za magnetic, hanyuma buva ku ngufu za magnetic zijya ku ngufu za electromagnetic.
Indangururamajwi ya Bass na tereble, indangururamajwi iri hagati ifite sisitemu y'amajwi, umuraba muremure, uburebure bw'uburebure bw'amajwi, ituma amatwi y'abantu atanga ubushyuhe, ibyiyumvo bishyushye, kandi bigatuma abantu banezerwa, bashishikazwa, bikunze gukoreshwa muri KTV, muri bar, ku rubyiniro no mu zindi nzu z'imyidagaduro.
