Uyini imvamisa asikiwe we subwoofer futhi indlela yokumisa kahle

Ukucushwa yesimanje umsindo yokukhulisa izwi apharathasi, ukudala umsindo ozungezayo kusikisela iziteshi obusebenzayo ngokuhlukana. uhlelo onjalo umsindo uhlanganisa izipikha front futhi bakhulise, isiteshi isikhungo kanye subwoofer.

Lesi sakamuva ukhonza adale nemisindo ezansi imvamisa uhla kusuka 20 kuya ku-180 Herz. Ngokuyinhloko le ndlela isetshenziswa uma ubuka izinhlelo isiqophi namafilimu aqukethe izigcawu yokuqhuma, ukwethulwa isikhala namarokhethi kanye nezimo ezifanayo ofuna beshaya kakhulu amandla okuyinyakazisa emoyeni.

Ngokuvamile, subwoofers eyenzelwe isimiso esebenzayo, okungukuthi, khona baneHholo esakhelwe amplifier, ugesi kanye ukulungiswa. Izilawuli nezilungiselelo zihlanganisa ezimbili eziyinhloko isibambo "ezingeni» (Lizinga) kanye "cutoff imvamisa» (Crossover Frequency). Isabelo ezingeni isibambo kuyaqondakala, mthethonqubo umfutho umsindo. Futhi yingakho ukucushwa yesibili, kuyacaca akubona bonke.

Ngokungafani broadband izipikha, subwoofer ukhawulelwe onqenqemeni engenhla ibanga lokuvama. Ngakwelinye ihlangothi, basses zihlukaniswe ezijulile - 40 Hz, naphakathi - kufike ku-80 Hz, kanye eliphezulu - kuze kufinyelele 160 Hz. Of lapho imvamisa cutoff isethiwe, ukujula esafinyelelwa umphumela acoustic kuncike. Kwezinye izimo, iqhaza uhla eziphakeme bass kudala umsindo ethambile, ngokwesibonelo, lapho ukulalela umculo noma ukubukela amabhayisikobho ngaphandle imiphumela ekhethekile zengezwe. Uma Nokho, kudinga umphumela ezibophayo kakhulu nesimiso sezinzwa zombuki, isibonelo, ngesimo ebhidlikayo izakhiwo namaplanethi ezoqhuma, le subwoofer asikiwe imvamisa kungenziwa sigudluke eduze infradiapazonu.

Ngokomthetho, elingenhla Umkhawulo - umsebenzi olula. Yiqiniso physics yaziwa ukuthi ikhono ukuhlunga abe impahla mayelana imisindo ephansi, futhi inductance - kuya phezulu. Ngakho, elula LC Elihehayo ungakwazi ukuhlukanisa ngempumelelo wayefisa endaweni ezahlukene, kuyilapho ekwehliseni lizinga engathandeki isignali bohlu. Ukuze "uqhelise" okusezingeni eliphezulu naphakathi imvamisa Okokufaka subwoofer, kwanele ukuba unike amandla ezikhumulweni okokufaka okucishe kufane nalokhu capacitor encane - a PF ezimbalwa. Kodwa isihlungi bakudala ezinjalo uzokwehla bushelelezi futhi imvamisa impendulo, ngakho ngo umkhuba design yabo more xaka.

Ngaphezu kwalokho, imvamisa cutoff inikezwe kanye ukusefa isignali okukhipha ukuyobukela ilawudispikha enamandla. Ukuze wenze lokhu ngaphakathi emzimbeni eduze isikhulumi enye ibhodi capacitors futhi inductors.

Imvamisa cutoff we LPF (ongaphakeme pass ukuhlunga) kuhle kushintshwe, nakuba eziphansi izinhlelo umsebenzi elinjalo lingase linganeli.

Lungile subwoofer kulungiselelwa maqondana nezinye izingxenye acoustic of uhlelo ekhaya yaseshashalazini - udinga isineke futhi ukuhlolisisa. Umtsetfosimiso ezinhle kubhekwa, lapho bass sasikhipha kusukela phambili ozungezayo Izipikha eyayihambisana ngezansi-ongaphakeme amaza zisakazelwe kubo, hhayi "phikisana" nomunye, ubani onamandla. Umgomo we "ngisho nakakhulu ngcono" akusebenzi lapha.

Ngakho, imvamisa cutoff siyilungiselelo ezibalulekile kuqinisekisa ukusebenza ilungile futhi uhambisane kohlelo jikelele.