Engeri y’okulondamu subwoofer ekola ne passive ku home theater

Leero tugenda kwogera ku nkola ya mizindaalo ekola amaloboozi aga frequency eya wansi mu nkola ya home theater – subwoofer. Tujja kwogera ku bika n’eby’ekikugu eby’ebyuma, tunnyonnyola ebika ebisinga okukola obulungi, tugabana ebiragiro by’okuyunga, okusengeka, n’okutuuka n’okukuŋŋaanya subwoofer ggwe kennyini.

Subwoofer: endowooza n’ekigendererwa mu katemba w’awaka

Subwoofer kye kyuma ekiddamu amaloboozi aga frequency eya wansi – okuva ku 5 Hz (kwe kugamba, nga mulimu ne infrasound). Mu kiseera kye kimu, si mpagi eyetongodde, wabula ejjuliza enkola y’amaloboozi.

Ebbaluwa! Amaloboozi aga firikwensi entono tegabeera bulungi mu kitundu, kwe kugamba, kizibu okuzuula ensibuko y’amaloboozi ng’okozesa okutu. Mu nsonga eno, mu nkola ya stereo ey’engeri nnyingi, tusaba okussaamu woofer emu yokka. Enkola eno ey’okusengeka ejja kukekkereza ekifo n’okukendeeza ku ssente zonna ezisaasaanyizibwa ku nkola y’emizindaalo awatali kusaddaaka mutindo gwa ddoboozi. Subwoofers, ng’etteeka, zikozesebwa mu nkola ezo eza stereo ezikoleddwa okulaba firimu ezijjudde ebikozesebwa eby’enjawulo; nga kwotadde n’okuwuliriza ennyimba ez’omulembe ezirimu bass. N’ekyavaamu, tufuna eddoboozi erisingako obunene era erya nnamaddala.

Ebika bya subs ebikozesebwa mu home theaters

Mu bikwatagana ne audio frequency amplifier, woofers zigabanyizibwamu active ne passive.

1. Subwoofer ekola era emanyiddwa nga woofer eyawulwamu olw’okubaamu ekyuma ekigaziya amaanyi ekizimbiddwamu ne crossover ekola. Kwe kugamba, egatta ebyuma ebyo ebisangibwa mu ngeri ey’enjawulo. Subwoofer ng’eno erina line outputs ne inputs, era esobola okufuna signal nga frequency enkulu ezasaliddwa dda, kwe kugamba, line level. Mu mbeera eno, crossover filter tekyetaagisa. Subwoofer ezisinga ezikola nazo zirina ebirala by’osobola okutereeza embeera.
2. Mu ngeri y’emu, akazindaalo aka passive tekalina kiziyiza maanyi. Era eyungibwa ku amplifier ey’ebweru oba emizindaalo gya stereo emikulu mu parallel. Ekizibu ekikulu eky’okukyusakyusa ng’okwo kwe kutikka okw’enjawulo ku amplifier ezifuluma, oluusi ekikendeeza ku puleesa y’eddoboozi okutwalira awamu. Mu ngeri y’emu, passive crossover ku kkubo okuva ku amplifier okutuuka ku main speakers nakyo kirina akakwate akabi ku acoustic properties. Passive subwoofer “eyagala” okugiteeka, era terina busobozi bwa auxiliary tuning.

Amplifier erina okuba nga ya maanyi waakiri ebitundu 10-15 ku buli 100 okusinga passive subwoofer ey’amaanyi agalangiriddwa (nga kwogasse n’emizindaalo).

Ebikwata ku nsonga z’olina okussaako essira

Nga tulonda subwoofer, tufaayo ku bintu ebikulu eby’ekikugu ebiri mu kyuma kino:

1. Ekimu ku bikulu ye frequency range . Amaanyi agafuluma gagabanyizibwamu obukwakkulizo mu octaves eziwerako, nga zino ze zino: deep bass (20 – 40 Hz), medium (40 – 80 Hz) ne high (80 – 160 Hz). Mu kiseera kye kimu, ebanga lya model ezisinga obungi liri 40 – 200 Hz. Frequency okuva ku 5 Hz zizaala model emu yokka.
2. Parameter eddako ye maximum sound pressure , mu ngeri endala, volume esinga obunene eya subwoofer.

Kisanyusa okumanya. Omutendera ogusinga wansi omuntu gw’alaba guyitibwa omusingi gw’okuwulira. Omuwendo gwayo guli 0 dB. Ekisinga obunene kye kigero ky’obulumi – 120 dB.

1. Obuwulize bwa subwoofer gwe mugerageranyo gwa puleesa y’amaloboozi eya wakati ku 1 W ey’amaanyi ne mmita emu ey’ebanga Okutwalira awamu, omuwendo gw’obuwulize (dB) gye gukoma okuba waggulu, eddoboozi ly’enkola y’emizindaalo gye likoma okuba ennungi.
2. Emirundi gy’okusalako . Wano tutegeera frequency ekitundu kya signal kwe kibeera. Okugeza, singa frequency ya crossover eba 90 Hz, olwo ebitundu bya signal byonna ebirina frequency range ya 20 – 90 Hz bijja kuweebwa ku subwoofer, mu ngeri endala, signal eriko frequency ezisukka omuwendo ogulagiddwa ejja kusindikibwa ku mizindaalo emikulu.
3. obuwanvu bwa subwoofer . Dizayini y’ekisenge kya subwoofer nayo okusinga esalawo amaloboozi g’ekyuma kino. Waliwo ebika 3 ebikulu ebya dizayini ya subwoofer dynamic bass head – bandpass, closed ne phase inverter. Buli kika kirina ebirungi byakyo n’ebizibu ebimu.

Naye, ebyembi, kino tekisoboka bulijjo. Olwo ne tuteeka sub w’etajja kutuuka wansi w’ebigere, nga tufaayo ku mateeka agamu. Okugeza:

1. Okufuna bass endala, tugiteeka okumpi ne bbugwe atwala emigugu, okufuna eddoboozi erisingako okubeera ery’amaanyi – emabega w’ekisenge.
2. Subwoofer tugitambuza nga erina phase inverter okuva ku bbugwe ne sentimita 20-30.
3. Toteeka akazindaalo okumpi ne bbugwe omugonvu, eddirisa, sideboard n’ebirala. Subwoofer bw’eba ekola, ebifo ng’ebyo bijja kukankana, ekijja okwongera obucaafu ku ddoboozi.

Okuyungibwa

Mu nkola y’okuyunga subwoofer, mu nkola, tewali kintu kizibu. Tuyunga ku nkola mu emu ku ngeri ssatu. Ka twekenneenye buli kimu.

1. Enkola esooka, esinga okuba ennyangu era esinga okukozesebwa, kwe kuyunga omukutu gwa low-frequency effects (LFE oba Low Frequency Effect) ku DC receiver. Esaanira kumpi buli AV receiver, wamu ne amplifier erimu output ey’enjawulo ku subwoofer. Tukozesa waya ya subwoofer okuyunga. Ebiyingizibwa n’ebifulumizibwa bye bino wammanga: ku lisiiva, ebiseera ebisinga “SUB OUT” oba “Subwoofer Out”; ku kitundu – “LFE INPUT”, “LINE IN”. Oluvannyuma tewerabira okussa ekyuma mu outlet ekuli okumpi. Singa wabaawo ekiyungo kimu kyokka ekyetaagisa ku lisiiva, era nga weetaaga okuyunga ebyuma ebiwerako, tusaba okukozesa waya ya subwoofer eringa eya Y.
2. Bwe waba tewali biyingizibwa n’ebifulumizibwa ebyogeddwako waggulu ku byuma ebiriwo, tunoonya ebirala, era tuyunga nga tukozesa emu ku nkola ebbiri wansi.

Okutereeza

Oluvannyuma lw’okussaako subwoofer, wamu n’okugiyunga ku nsibuko ya siginiini ne mutimbagano, tugenda mu maaso n’okuteekawo ebyuma. Kebera era bwe kiba kyetaagisa, otereeze ebipimo bino wammanga:

• Singa wabaawo regulator ya high-pass filter (HPF), tuteekawo omuwendo ogusinga obunene ogukkirizibwa – ebiseera ebisinga 120 Hz.
• Tuteeka switch ya phase ku “0” oba “Normal”, regulator ku kifo ekisukkiridde (“0”).
• Kirungi okuteeka eddoboozi ku 1/3 ku muwendo ogusinga obunene.
• Frequency esengekeddwa ey’okusalako eri 80 Hz.
• Ku AV receiver, londa “Stereo” nga mode y’amaloboozi.

Engeri y’okukolamu subwoofer ya home theater

Singa subwoofer ey’amaanyi yeetaagibwa mu sinema y’awaka, naye nga tewali ssente zimala kugigula, osobola okwekolera ebyuma. Ku kyuma ekikoleddwa awaka ojja kwetaaga:

• akazindaalo aka bulijjo (twala akazindaalo ka Pioneer aka yinsi 10, model TS-W255C; ssente za wakati ziba 800 rubles);
• amasannyalaze, okugeza, okuva ku PC enkadde (500 W);
• amplifier y’emmotoka ng’eriko crossover ezimbiddwamu (Lanzar Heritage);
• subwoofer y’emmotoka etali ya bbeeyi;
• empagi eziyitibwa columns;
• waya z’emizindaalo;
• Fiberboard ya fuleemu (obugazi obusemba – mm 18);
• langi, okusiiga langi.

Ka tugende ku mirimu.

1. Tutandika ne dizayini ya kkeesi . Ku lw’ekigendererwa kino, tujja kukozesa pulogulaamu eno ey’okulaba mu 3D – Sketchup. Ebipimo bibalirirwa nga tukozesa WinISD. Ku output, twafuna case eringa cube. Obugulumivu bwa buli ludda buba sentimita 35. Omwalo gwakolebwa wansi, ate amaanyi agakkirizibwa okufuluma gali 32 Hz.
2. Ku mutendera oguddako, twasala fuleemu okuva mu fiberboard . Fiyuzi eno esobola okukolebwa mu neoplene, nga eno erimu embalirira nnyingi.
3. Omutendera ogw’okusatu kwe kukola omwalo. Ku lw’ekigendererwa kino, omudumu gw’akaveera ogwa mm 110 obugazi gwatukwata bulungi.
4. Ekiddako, tukuŋŋaanya ne tusiiga fuleemu nga tukozesa kalaamu y’embaawo ey’omutindo ogwa waggulu.
5. Nga tukozesa kalaamu ne silikoni sealant, tuteeka omukutu ogwakuŋŋaanyizibwa emabegako mu fuleemu.
6. Sala n’okusenya ebituli.
7. Twa primed case mu layers eziwerako. Era n’agisiiga langi y’emmotoka.
8. Tugenda mu maaso n’okukola n’omunda mu kkeesi. Tutwala insulation, era nga tuyambibwako construction stapler tusiba ekintu ekyo ku bisenge bya fuleemu. Bwe kityo, twewala okuwuuma ennyo nga tuwulikika.
9. Omutendera oguddako ogusembayo kwe kuteeka amasannyalaze, waya z’oku ttaka, amplifier.

N’ekyavaamu, tufuna subwoofer ennungi ennyo ku ssente entono. Ekyuma kino kigula emitwalo nga 2.5.

Engeri y’okumenyawo subwoofer okuva mu home theater okuddaabiriza

Okusuula subwoofer oba okusika yuniti n’amaanyi kiyinza okwonoona waya. Kino kijja kuvaamu eddoboozi eriwuuma ng’okoleezeddwa oba obuzibu obulala obw’amaanyi ennyo. Okusobola okutereeza ekizibu kino, enkola y’emizindaalo egy’amaanyi amatono ejja kwetaaga okumenyawo. Ensengeka y’okusengejja eri bweti:

• menya n’obwegendereza kkeesi ya subwoofer;
• Ggyako akazindaalo ku fuleemu.

Kyandirabise nga buli kimu kyangu nnyo. Naye nga osambula sub, kikulu okulowooza ku nuances eziwerako.

• Keesi za subwoofer yonna zigguka bulungi nnyo . Ku mizindaalo gya kkampuni ezimu, bbugwe w’emabega asibibwako sikulaapu nnya oba ttaano. Abakola ebirala tebakoma ku kika kino eky’okusiba, era ne basiiga ebitundu; oba kozesa ekika ky’okusiba “mu grooves”. N’olwekyo, okusobola okumenyaamenya kkeesi, oyinza okwetaaga obuuma obutono obuyitibwa flat ne Phillips screwdrivers, ekiso okusekula ku kalaamu.

Ebbaluwa! Ggulawo kkeesi mpola oleme kwonoona waya n’ebirala ebiri munda mu subwoofer.

• Akazindaalo akali munda mu kkeesi era osobola okugiteekako sikulaapu ne kalaamu . Subwoofer za Panasonic zirina ekifo eky’enjawulo we bateeka waya. Okukebera obulungi bwa waya, ekisenge kiggulwawo. Era kirungi okukuba ekifaananyi ky’ekifo waya we ziri ku mitendera egy’enjawulo egy’okusaanyawo subwoofer. Kino kijja kwanguyiza nnyo enkola ey’okudda emabega – okukuŋŋaana kw’enkola okujja.

Tusuubira nti okwekenneenya kwaffe kuyambye okukola ku bibuuzo byonna ebiriwo.