Ho sebelisa thobalano e matla ea "impedance muffler", ho fokotsa lerata la molomo oa moferefere.
Hookon e loketseng, yuniti ea lipalangoang tse bonolo, sebaka se kampetsoeng se behile lisebelisoa tse 4 tsa ho phahamisa.
Sebopeho se setle, sebopeho se utloahalang.