Yintoni amaza cut-off le subwoofer nendlela ukuqwalasela kakuhle

Uqwalaselo mihla sound yokukhulisa apparatus, ukudala isandi bayawarhawula icebisa amajelo ukwahlukana esebenza. Olo kumqhubi kuquka izithethi ngaphambili nangasemva, ijelo iziko kunye subwoofer.

Le yokugqibela isebenza ekuyileni iimpembelelo yesandi ezongezelelweyo ezisezantsi sokuquqa ekungabalwa 20 ukuya 180 Herz. Ngokomthetho olu khetho kusetyenziswa xa ubukele iinkqubo yokuzonwabisa kunye neebhanyabhanya eziquka imifanekiso ungadubula, uqala e of imijukujelwa isithuba kwaye iimeko ezifanayo apho ufuna akore kakhulu ngokwaneleyo ukuba angcangcazelise emoyeni.

Ngokuqhelekileyo, subwoofers eyenzelwe yomgaqo esebenzayo, oko kukuthi, kufuneka ezabo ngombhobho, unikezelo lwabo amandla eyakhelwe-ngaphakathi kunye ukulungiswa. Zokulawula kunye nezicwangciso ziquka ezimbini yokubamba engundoqo "inqanaba» (Level) kunye 'umda frequency »(crossover Frequency). inqanaba isabelo yokubamba siyaqondakala, le ngamandla ulawulo olululo. Kwaye yiloo nto le uqwalaselo lesibini, kucacile ukuba bonke.

Ngokungafaniyo broadband izithethi, subwoofer anqongophele ngenxa ngohlangothi aphezulu uhla njalo. Kwelinye icala, basses bohlulwa babe olunzulu - 40 Hz, eliphakathi - up to 80 Hz, kwaye eliphezulu - ukuya ku 160 Hz. Apho amaza umda olucwangcisiweyo, ubunzulu ekufikelelwe isiphumo ive luxhomekeke khona. Kwezinye iimeko, ukuthatha inxaxheba kuluhlu eliphezulu bass kudala isandi elula, umzekelo, xa ndiphulaphule umculo okanye ukubukela iimovie ngaphandle iziphumo ezizodwa ziye longeziwe. Ukuba, ke, kufuna nefuthe engqongqo ngakumbi luvo lwe oyibukeleyo, umzekelo, ngokohlobo nokonakala izakhiwo kunye elanda iiplanethi, lo subwoofer cut-off rhoqo nga kwatshintsha kufutshane infradiapazonu.

Nngokobuchwepheshe, le umda frequency eliphezulu - umsebenzi olula. Kakade physics kwakusazeka ukuba amandla lokucoca abe impahla ngokunxulumene ezitsho eliphantsi inductance - ukuya phezulu. Ngenxa yoko, indlela elula LC-lokucoca ngempumelelo ikheswa olifunayo kwindawo uluhlu, lo gama ukunciphisa inqanaba spectrum uphawu olungafunekiyo. Ukuze 'Gcina' rhoqo igalelo eliphezulu neliphakathi ukuya subwoofer, kwanele ukwenza igalelo ezinjengeetheminali engumzekelo a capacitor encinane - a PF ezimbalwa. Kodwa icebo lokucoca abangekaphuhli kuya kuncipha impendulo frequency egudileyo kakhulu, ngoko practice kuyilo lwabo nzima ngakumbi.

Ngaphezu koko, amaza umda inikwa nocococ yomqondiso imveliso kwi zwi enamandla. Ukwenza oku ngaphakathi emzimbeni kufuphi isithethi kweplanga kunye capacitors kunye inductors.

Le umda amaza LPF (filter yokupasa esezantsi) kuhle zilungiswe, kwiinkqubo zexabiso eliphantsi umsebenzi angavumelekanga nakuba.

subwoofer njengomiselo oluchanekileyo xa kuthelelkiswa namanye amacandelo ive inkqubo imidlalo ekhaya - kufuna umonde kahle. Umgaqo olungileyo kuthathwa, apho bass ophuma ngaphambili kunye bayawarhawula izithethi esongezelelwe infra-phantsi ezitsho olusasazwe kubo, yaye hayi "ukuphikisana"-nye, ngubani onamandla. Umgaqo "kakhulu ngcono" ayisebenzi apha.

Ngenxa yoko, amaza umda yi beziko ebalulekileyo eqinisekisa ukuba intsebenzo echanekileyo engqinelanayo yenkqubo iyonke.