Ngokusekelwe kwisisombululo semakrofoni ye-electret condenser yekhasimende, i-Aopuxin yethule isisombululo sokuhlola esisodwa kuya kwezimbili ukuze kuthuthukiswe umthamo wokuhlola wemikhiqizo yekhasimende emgqeni wokukhiqiza.
Uma kuqhathaniswa negumbi elingaguquki elingangeni msindo, lolu hlelo lokuhlola lunomthamo omncane, okuxazulula inkinga yokuhlola futhi kulethe ukonga okungcono. Kunganciphisa nezindleko zokuphathwa komkhiqizo.