I-Midiplus MI 5 - iziqapha ze-Bluetooth ezisebenzayo
Uhlobo lwe-Midiplus luya ngokuya lubonakala emakethe yethu. Futhi lokho kuhle, ngoba inikeza imikhiqizo esebenzayo ngentengo efanelekile. Njengama-monitor ahlangene achazwe lapha.
M.I. 5 abeqembu izipikha ezisebenza ngezindlela ezimbililapho siphakela khona isignali kumqaphi oyedwa kuphela. Sizokuthola nakuye ukulawula ivolumu kanye nokushintsha kwamandla. Lesi sixazululo sisekelwe esakhiweni esisebenzayo, lapho wonke ama-electronics, kuhlanganise nezikhulisamandla zamandla, afakwa kumonitha eyodwa, ngokuvamile ekwesokunxele. Eyesibili ayinyakazi, ithola isignali yeleveli yesipikha esivela kumonitha esebenzayo, okungukuthi, ambalwa noma amashumi ama-volts.
Ngokuvamile kulesi simo, abakhiqizi abaningi bahamba ngendlela elula, ukuxhuma izikhulumi ngekhebula elilodwa. Lokhu kusho ukuthi ukuqapha akuyona indlela emibili (ene-amplifiers ehlukene ye-i), kodwa i-broadband, futhi ukuhlukaniswa kwenziwa ngokuzenzakalelayo kusetshenziswa i-crossover elula. Lokhu kuvame ukwehlela ku-capacitor eyodwa ngoba kuyindlela elula neshibhe kakhulu "yokuhlukanisa" amaza aphezulu kuwo wonke ama-audio spectrum.
I-amplifier yeziteshi ezimbili zangempela
Uma kwenzeka M.I. 5 sinesixazululo esihluke ngokuphelele. I-monitor ye-passive ixhunywe kukhebula lezintambo ezine ezisebenzayo, futhi lokhu kuwuphawu oluqinisekile lokuthi abaqaphi banikeza ukwabelana komkhawulokudonsa osebenzayo kanye nezikhulisamandla ezihlukene ze kanye. Empeleni, lokhu kuhumusha ukuthi kungenzeka ukubunjwa kwemvamisa okunembe kakhudlwana kanye nomthambeka wesihlungi ku-crossover, futhi, ngenxa yalokho, ukukhiqizwa okulawulwa kakhulu komsindo oyinhloko weqembu kusuka kumvamisa ye-crossover.
Omunye angase amemeze: “Kwenza mehluko muni, ngoba laba baqaphi babiza ngaphansi kuka-700 zł - kule mali azikho izimangaliso! Kanye naleyo Bluetooth! Ngandlela-thile, lokhu kulungile, ngoba kule mali kunzima ukuthenga izakhi ngokwazo, ingasaphathwa yonke ubuchwepheshe ngemuva kwabaqaphi. Futhi namanje! Umlingo omncane waseMpumalanga Ekude, ukusebenza kahle okukhethekile kokwenziwa komsebenzi kanye nokwenza kahle kwezindleko zokukhiqiza, okungaqondakali kubantu baseYurophu, kube nomthelela eqinisweni lokuthi ngale mali sithola isethi ejabulisa kakhulu yokulalela isitudiyo sasekhaya noma isiteshi semidiya exubile.
design
Isiginali ingafakwa ngendlela eqondile - ngokusebenzisa Okokufaka kwe-TRS okulinganiselwe okungu-6,3 mm kanye ne-RCA engalingani kanye ne-3,5mm TRS. Imojula eyakhelwe ngaphakathi ye-Bluetooth 4.0 ingaba umthombo, futhi izinga lesignali eliphelele elisuka kule mithombo liyalungiswa kusetshenziswa i-potentiometer kuphaneli yangemuva. Isihlungi esishintshekayo seshelufu sinquma izinga lamafrikhwensi aphezulu ukusuka ku -2 ukuya ku +1 dB. Ama-electronics asekelwe kumasekhethi e-analog., amamojula amabili we-amplifier asebenza ekilasini D, kanye nogesi oshintshwayo. Ikhwalithi yokwakha nokunaka imininingwane (efana nokufakwa kwe-acoustic kojeke besipikha nama-TPC) ikhuluma ngendlela ebucayi yabaklami ethimu.
Amamonitha athengiswa njengepheya, ahlanganisa isethi esebenzayo nesenziwayo, exhunywe ngentambo yesipika enezintambo ezi-4.
Ngokungeziwe ezinhlotsheni ezintathu zokufakwayo komugqa, abaqaphi banikeza ikhono lokuthumela isignali nge-Bluetooth.
abaqaphi ube nomklamo we-bass-reflex onokuphuma okuqondile kuphaneli elingemuva. Ngenxa yokusetshenziswa kwe-diaphragm engamayintshi angu-5 enokuchezuka kwe-diaphragm okukhulu kakhulu, bekudingeka ukuthi kusetshenziswe ikesi elinokujula okukhulu kunalokho obekungabonakala kungxenye yobukhulu. Imonitha yokwenziwa ayinawo ugesi, ngakho-ke ivolumu yayo yangempela inkulu kuneyemonitha esebenzayo. Lokhu kwabuye kwacatshangelwa, kunxephezela ngokwanele lokhu ngokwandisa inani lezinto ezimanzi.
Idayamitha esebenzayo ye-diaphragm ye-woofer ingu-4,5″, kodwa ngokwemfashini yamanje, umenzi uyifanelekela njengo-5″. I-Woofer ifakwe ekugcineni kwephaneli yangaphambili enemiphetho enephrofayili. Lona umklamo othakazelisayo nongavamile okuvumela ukuthi ukwandise ububanzi be-acoustic bomthombo wamafrikhwensi aphansi naphakathi. I-tweeter nayo iyathakazelisa, ine-diaphragm ye-dome engu-1,25 ″, engenawo ama-analogue kulolu hlu lwamanani.
umqondo
yenza umsebenzi wayo lapho idlala i-bass ukusuka ku-100 Hz nangaphezulu, futhi kububanzi obungu-50 ... 100 Hz isekelwa ngesibindi umshini oshunwe kahle kakhulu. i-inverter yesigaba. Eyakamuva, uma kubhekwa ubukhulu bemonitha, ithule kancane futhi akwethusi ukuhlanekezela okubalulekile. Konke lokhu kukhuluma ngokukhethwa okuphelele kwezinto kanye nomklamo ocatshangelwe kahle, owenziwe kahle.
Impendulo yemvamisa yemonitha, kucatshangelwa izikhundla ezintathu zokuhlunga okuphezulu. Ngezansi izici ze-harmonics 55th kanye 0,18th kuzo zonke izilungiselelo zokuhlunga. Isilinganiso se-THD singu-XNUMXdB noma u-XNUMX% - umphumela omuhle wabaqaphi abancane.
Emafrikhwensi amaphakathi, iqala ukulahlekelwa ukusebenza kwayo, eyehla ngo-1 dB ngo-10 kHz. Lapha udinga njalo ukuthola ibhalansi elungile phakathi kwezinto ezifana nentengo, ikhwalithi yokucubungula i-bass kanye nezinga lokuhlanekezela. Lesi isenzo sangempela sokulinganisa emgqeni omuhle, futhi ngisho nabakhiqizi abaqashelwa njengabaholi abaphumeleli ngaso sonke isikhathi kulobu buciko. Endabeni ye-MI5, anginakho okunye ngaphandle kokuveza inhlonipho yami ngomsebenzi owenziwe abaklami, abazi kahle ukuthi bafuna ukufeza ini nokuthi bafuna ukufeza kanjani.
Izici zokuvama kwemithombo yesignali ngayinye: i-woofer, i-tweeter kanye ne-inverter yesigaba. Amapharamitha wokuhlukanisa akhethwe ngobuchule, izishayeli zekhwalithi ephezulu kanye nomklamo oyisibonelo wembobo ye-bass-reflex yenza imonitha izwakale ithakazelisa kakhulu.
Ukuhlukaniswa kwamafrikhwensi kungu-1,7 kHz futhi umshayeli ufinyelela ukusebenza kahle okugcwele ku-3 kHz. Umthambeko wezihlungi ze-crossover ukhethwe ngendlela yokuthi ukulahlekelwa okuphelele kokusebenza kahle kumafrikhwensi e-crossover kube ngu-6 dB kuphela. Futhi njengoba lokhu kuwukuphela kwentengo okufanele uyikhokhele ukucutshungulwa okushelelayo kwamafrikhwensi afika ku-20 kHz, ngizithanda kakhulu izinto ezinjalo.
Ukuqhathaniswa kwezimpawu nokuhlanekezela kwe-harmonic lapho udlala isignali ngokokufaka komugqa kanye nembobo ye-Bluetooth. Ngaphandle kokubambezeleka okubonwe ezimpendulweni zomfutho, lawa magrafu acishe afane.
Angazi ukuthi abathuthukisi bamtholephi lo mshayeli, kodwa lokhu kungenye yama-tweeter e-compact dome athakazelisa kakhulu engake ngawezwa. Njengoba inobubanzi obungu-1,25″, okungajwayelekile ngisho nakulokho okubhekwa njengabaqaphi abangochwepheshe, ingathatha kalula ukucutshungulwa isuka ku-1,7kHz kuyilapho igcina izinga elijwayelekile lesibili le-harmonic elingu-50dB uma liqhathaniswa nemvamisa eyisisekelo (sikhuluma nje ngo-0,3, XNUMX%). Iphumaphi imithungo? Ngokuqondene nokusabalalisa, futhi ngokubuka kwemvelo yedeskithophu yalaba baqaphi, akunandaba nhlobo.
Ekuzijwayeza
Umsindo we-MI 5 ubukeka uqinile kakhulu, ikakhulukazi ngokwentengo nokusebenza. Zizwakala zinobungane, ziqondakala, futhi naphezu kokusebenza kwazo okuphansi kwebanga elimaphakathi, zimele uhlangothi olukhanyayo lomsindo, mhlawumbe nokukhanya kakhulu. Kukhona isixazululo salokhu - sibeka isihlungi seshalofu eliphezulu ku- -2 dB, futhi iziqapha ngokwazo zisethwe "ekukhanyeni okuhlukile kancane". Uma nje igumbi linganyakazi ngesitudiyo sasekhaya sendabuko esingu-120-150Hz, singalindela umuzwa wokulalela othembekile ngesikhathi sokuhlela nokukhiqiza kokuqala.
Ukudlala kwe-Bluetooth kucishe kufane nokudlalwa kwekhebula, ngaphandle kokulibaziseka kokudluliswa okungaba ngu-70ms. Imbobo ye-BT ibikwa njenge-MI 5, ihlinzeka ngesilinganiso sesampula esingu-48kHz kanye nokulungiswa kwephoyinti elintantayo elingu-32-bit. Ukuzwela kwemojula ye-Bluetooth kuye kwanda kakhulu ngokufaka uthi lwe-50 cm ngaphakathi kweziqapha - lokhu kungobunye ubufakazi bokuthi abaklami bawubheka ngokungathi sína kangakanani umsebenzi wabo.
Isifinyezo
Ngokumangalisayo, uma kubhekwa intengo yalaba baqaphi kanye nokusebenza kwabo, kunzima ukukhuluma nganoma yikuphi ukushiyeka. Ngeke nakanjani badlale ngokuzwakalayo, futhi ukunemba kwabo ngeke kwanelise izidingo zabakhiqizi abathanda ukulawula okuphelele kumasignali ashukumisayo nokukhetha kwezinsimbi. Ukusebenza kahle kwe-midrange okuphansi akuwona wonke umuntu, ikakhulukazi uma kukhulunywa ngamaphimbo nezinsimbi zomculo we-acoustic. Kodwa emculweni we-elekthronikhi, lo msebenzi awusabalulekile kangako. Ngingacabanga ukuthi isilawuli sokuzwela kanye neswishi yamandla kungemuva, futhi intambo yamandla ixhunywe unomphela kusiqapha esingakwesokunxele. Nokho, lokhu akuyona into ethinta ukusebenza kwe-MI 5 nomsindo wayo.
Ngenani lawo, ukwakheka okuhle, nokunaka imininingwane ye-sonic ekudlalweni, alungele ukuqala uhambo lwakho lokudlala umculo. Futhi lapho sikhula kubo, bazokwazi ukuma endaweni ethile ekamelweni, okukuvumela ukuthi udlale umculo kusuka ku-smartphone yakho.
Bheka futhi:
