Midiplus MI 5 - owunikira a Bluetooth omwe amagwira ntchito

Mtundu wa Midiplus ukudziwika kwambiri pamsika wathu. Ndipo ndizabwino, chifukwa imapereka zinthu zogwira ntchito pamtengo wokwanira. Monga ma compact monitors omwe afotokozedwa apa.

M.I. 5 kukhala a gulu zokuzira mawu zanjira ziwirimomwe timadyetsa chizindikiro ku polojekiti imodzi yokha. Tidzaupezanso mwa iye kuwongolera mphamvu ndi switch switch. Njira yothetsera vutoli imachokera ku dongosolo logwira ntchito, momwe magetsi onse, kuphatikizapo amplifiers amphamvu, amaikidwa mu polojekiti imodzi, nthawi zambiri kumanzere. Yachiwiri ndi yongokhala, kulandira siginecha ya sipika yochokera ku chowunikira chogwira, ndiko kuti, angapo kapena makumi a volts.

Kawirikawiri pankhaniyi, opanga ambiri amapita ku njira yosavuta, kulumikiza okamba ndi chingwe chimodzi. Izi zikutanthauza kuti polojekiti si njira ziwiri (zokhala ndi amplifiers osiyana kwa i), koma burodibandi, ndipo kugawanika kumachitidwa mosasamala pogwiritsa ntchito crossover yosavuta. Izi nthawi zambiri zimatsikira ku capacitor imodzi chifukwa ndi njira yosavuta komanso yotsika mtengo kwambiri "yolekanitsa" ma frequency apamwamba kuchokera pamawu onse.

Amplifier yeniyeni yanjira ziwiri

M'malo mwa M.I. 5 tili ndi yankho losiyana kotheratu. Chowunikira chokhazikika chimalumikizidwa ndi chingwe chogwira chawaya anayi, ndipo ichi ndi chizindikiro chotsimikizika kuti oyang'anira amapereka kugawana kwa bandwidth ndikusiyanitsa zokulitsa ndi. M'zochita zake, izi zimamasulira kuthekera kwa mawonekedwe olondola pafupipafupi komanso kutsetsereka kwa fyuluta mu crossover ndipo, chifukwa chake, kutulutsa kolamulirika kwa mawu ofunikira a gululo kuchokera pafupipafupi.

Wina anganene mokweza kuti: "Zimapanga kusiyana kotani, chifukwa zowunikirazi zimawononga ndalama zosakwana 700 zł - pa ndalamayi palibe zozizwitsa! Komanso Bluetooth! Mwa njira zina, izi ndi zolondola, chifukwa ndalamazi zimakhala zovuta kugula zinthu zokhazokha, osatchula teknoloji yonse kumbuyo kwa oyang'anira. Ndipo pa! Zamatsenga pang'ono Kum'mawa kwa Far East, kuyendetsa bwino kwambiri kwazinthu komanso kukhathamiritsa kwamitengo yopangira, zosamvetsetseka kwa anthu aku Europe, zidathandizira kuti pamtengowu timapeza malo osangalatsa omvera situdiyo yakunyumba kapena mawayilesi apakanema.

kupanga

Chizindikirocho chikhoza kulowetsedwa motsatira - kupyolera Zolowera zokhala ndi 6,3 mm TRS ndi RCA yopanda malire ndi 3,5mm TRS. Ma module a Bluetooth 4.0 omwe adamangidwanso angakhalenso gwero, ndipo chiwerengero chonse cha zizindikiro kuchokera kuzinthu izi chimasinthidwa pogwiritsa ntchito potentiometer pagawo lakumbuyo. Chosefera chosinthika chosinthika chimatsimikizira kuchuluka kwa ma frequency apamwamba kuchokera -2 mpaka +1 dB. Zipangizo zamagetsi zimachokera ku ma analogi., ma module awiri amplifier omwe amagwira ntchito mukalasi D, ndi magetsi osinthira. Ubwino womanga ndi chidwi chatsatanetsatane (monga kutsekemera kwamamvekedwe a ma jacks olankhula ndi ma TPC) amalankhula za njira yayikulu ya opanga pamutuwu.

Oyang'anira amagulitsidwa ngati awiri, opangidwa ndi seti yogwira ntchito komanso yokhazikika, yolumikizidwa ndi chingwe choyankhulira cha 4.

Kuphatikiza pa mitundu itatu ya zolowetsa mzere, oyang'anira amapereka mwayi wotumiza chizindikiro kudzera pa Bluetooth.

oyang'anira khalani ndi mapangidwe a bass-reflex omwe amatuluka mwachindunji ku gulu lakumbuyo. Chifukwa chogwiritsa ntchito diaphragm ya mainchesi 5 yokhala ndi kupindika kwakukulu kwa diaphragm, kunali koyenera kugwiritsa ntchito mlandu wozama kwambiri kuposa momwe ungawonekere kuchokera kugawo la miyeso. Chowunikira chopanda pake chilibe zamagetsi, kotero voliyumu yake yeniyeni ndi yayikulu kuposa yowunikira yogwira. Izi zinaganiziridwanso, kulipira mokwanira izi powonjezera kuchuluka kwa zinthu zonyowa.

Kugwira ntchito kwa diaphragm ya woofer ndi 4,5 ″, koma malinga ndi mafashoni apano, wopanga amamuyenereza kukhala 5 ″. Woofer imayikidwa kumapeto kwa gulu lakutsogolo lomwe lili ndi m'mphepete. Uwu ndi mawonekedwe osangalatsa komanso osowa omwe amakulolani kuti muwonjezere kuchuluka kwa ma acoustic a gwero la ma frequency otsika komanso apakatikati. The tweeter ndiyosangalatsanso, yokhala ndi 1,25 ″ dome diaphragm, yomwe ilibe ma analogi pamitengo iyi.

lingaliro

imagwira ntchito yake posewera bass kuchokera ku 100 Hz ndi kupitilira apo, ndipo mumitundu ya 50 ... 100 Hz imathandizidwa molimba mtima ndi makina osinthidwa bwino kwambiri. gawo inverter. Chotsatiracho, chopatsidwa kukula kwa polojekitiyi, chimakhala chabata ndipo sichimayambitsa kupotoza kwakukulu. Zonsezi zimalankhula za kusankha koyenera kwa zinthu ndi kapangidwe koyenera, kopangidwa bwino.

Kuyankha pafupipafupi kwa polojekiti, poganizira malo atatu a kusefa kwapamwamba. Pansipa pali mawonekedwe a 55th ndi 0,18th harmonics pazokonda zonse zosefera. Pafupifupi THD ndi -XNUMXdB kapena XNUMX% - zotsatira zabwino kwa oyang'anira ang'onoang'ono.

Pakati pa ma frequency, imayamba kutaya mphamvu, yomwe imatsika ndi 1 dB pa 10 kHz. Apa nthawi zonse muyenera kupeza bwino pakati pa zinthu monga mtengo, bass processing quality ndi kupotoza mlingo. Uku ndi kulinganiza kwenikweni pamzere wabwino, ndipo ngakhale opanga omwe amadziwika kuti ndi atsogoleri samachita bwino muzojambulazi. Pankhani ya MI5, ndilibe chochita koma kusonyeza ulemu wanga pa ntchito yopangidwa ndi okonza, omwe ankadziwa bwino zomwe akufuna kuti akwaniritse.

Mawonekedwe afupipafupi a magwero azizindikiro: woofer, tweeter ndi gawo inverter. Magawo ogawanika osankhidwa mwaluso, madalaivala apamwamba komanso mawonekedwe achitsanzo a doko la bass-reflex zimapangitsa kuti polojekitiyi ikhale yosangalatsa kwambiri.

Kupatukana pafupipafupi ndi 1,7 kHz ndipo dalaivala amafika bwino pa 3 kHz. Kutsetsereka kwa zosefera za crossover kudasankhidwa kotero kuti kutayika kwathunthu kwachangu pama frequency a crossover kunali 6 dB yokha. Ndipo popeza uwu ndi mtengo wokhawo womwe muyenera kulipira kuti muzitha kuyendetsa ma frequency mpaka 20 kHz, ndimakonda zinthu zotere.

Kuyerekeza kwa mawonekedwe ndi kupotoza kwa harmonic mukamasewera ma siginecha kudzera pakulowetsa mzere ndi doko la Bluetooth. Kupatula kuchedwa komwe kumawoneka pamayankhidwe achangu, ma graph awa ali pafupifupi ofanana.

Sindikudziwa komwe opanga adatengera dalaivala uyu, koma iyi ndi imodzi mwama tweeter osangalatsa kwambiri omwe ndidawamvapo. Popeza ili ndi mainchesi a 1,25 ″, osowa ngakhale omwe amadziwika kuti ndi akatswiri owunika, imatha kuwongolera mosavuta kuchokera ku 1,7kHz ndikusunga mulingo wachiwiri waharonic wa -50dB wokhudzana ndi ma frequency ofunikira (tikunena za 0,3, XNUMX%). Kodi zosokera zimachokera kuti? Kumbali yakugawa, komanso potengera mawonekedwe apakompyuta a oyang'anira awa, zilibe kanthu.

Pochita

Phokoso la MI 5 limawoneka lolimba kwambiri, makamaka pamtengo ndi magwiridwe antchito. Amamveka ochezeka, omveka, ndipo ngakhale atakhala otsika kwambiri apakati, amayimira mbali yowala ya phokoso, mwinanso yowala kwambiri. Pali yankho la izi - timayika fyuluta yapamwamba kwambiri kukhala -2 dB, ndipo owunikirawo amayikidwa kuti "asinthe pang'ono". Malingana ngati chipindacho sichikuyenda bwino ndi situdiyo yapanyumba ya 120-150Hz, titha kuyembekezera kumvetsera kodalirika panthawi yokonzekera ndi kupanga koyamba.

Kusewerera kwa Bluetooth kumakhala kofanana ndi kusewera kwa chingwe, kupatula pafupifupi 70ms ya kuchedwa kufalitsa. Doko la BT limadziwika kuti MI 5, lomwe limapereka chitsanzo cha 48kHz ndi 32-bit point yoyandama. Kukhudzika kwa gawo la Bluetooth kwachulukirachulukira pakuyika mlongoti wa 50 cm mkati mwa oyang'anira - uwu ndi umboni wina wa momwe opanga adayandikira ntchito yawo mozama.

Chidule

Chodabwitsa n'chakuti, chifukwa cha mtengo wa oyang'anirawa ndi ntchito zawo, n'zovuta kunena za zofooka zilizonse. Iwo sadzasewera mokweza, ndipo kulondola kwawo sikungakwaniritse zosowa za opanga omwe amakonda kuwongolera kwathunthu ma siginecha amphamvu ndi kusankha kwa zida. Kuchita bwino kwapakatikati sikuli kwa aliyense, makamaka pankhani ya mawu ndi zida zoimbira. Koma mu nyimbo zamagetsi, ntchitoyi siilinso yofunika kwambiri. Nditha kuganiza kuti chowongolera komanso chosinthira mphamvu chili kumbuyo, ndipo chingwe chamagetsi chimalumikizidwa ndi chowunikira chakumanzere. Komabe, ichi sichinthu chomwe chimakhudza magwiridwe antchito a MI 5 ndi mawu ake.

Ndi mtengo wawo, kupangidwa kwabwino, komanso chidwi chambiri pakusewerera, ndizoyenera kuyambitsa ulendo wanu wosewera nyimbo. Ndipo tikadzakula kuchokera kwa iwo, adzatha kuyima penapake m'chipindamo, kukulolani kuti muziimba nyimbo kuchokera ku smartphone yanu.

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