I-Graham LS5/9 Monitor BBC

Abaqambi babaqaphi be-BBC, vele, bebengazi ukuthi amaphrojekthi abo azowenza muphi umsebenzi omkhulu nomude. Babengacabangi ukuthi bazoba yinganekwane, ikakhulukazi phakathi kwabasebenzisi be-hi-fi yasekhaya, abangadalelwanga nhlobo.

Zazihloselwe ukuthi zisetshenziswe izitudiyo ze-BBC nabaqondisi ngezimo nezinjongo ezichazwe kahle, eziklanywe ngendlela yobungcweti kodwa ewusizo, ngaphandle kwenhloso yokuguqula ubuchwepheshe besikhulisazwi. Kodwa-ke, kweminye imibuthano ye-audiophile, inkolelo ibilokhu ikhona isikhathi eside yokuthi into eseduze kakhulu nenhle yilena endala, ikakhulukazi eyaseBrithani, eyenziwe ngezandla - futhi ikakhulukazi abaqaphi beshalofu lezincwadi abanikezwe ilayisense yi-BBC.

Okukhulunywe Kakhulu qapha kusukela kuchungechunge lwe-LS encane, LS3/5. Njengabo bonke abaqaphi, i-BBC ekuqaleni yayihloselwe injongo ethile enemikhawulo ecacile: ukulalela emakamelweni amancane kakhulu, ezimweni zensimu eziseduze kakhulu, nasezindaweni ezincane kakhulu - okwaholela ekwenqatshweni kwe-bass nevolumu ephezulu. Isikhumbuzo sayo, inguqulo yakamuva yakhululwa cishe eminyakeni eyishumi edlule yinkampani yaseBrithani i-KEF, enye yabambalwa eyathola ilayisense ye-BBC ukukhiqiza i-LS ngaleso sikhathi.

Muva nje, kuvele omunye umkhiqizi, uGraham Audio, ophinde wakha umklamo owaziwa kancane - qapha i-LS5/9. Lena enye yamaphrojekthi akamuva e-BBC, kodwa "igcina ukugqama" kwama-SL adlule.

Ibukeka indala nakakhulu kunalokho eyikho ngempela. Kubukeka njengebhilidi lakuqala lama-70s, kodwa empeleni lincane ngoba "kuphela" iminyaka engamashumi amathathu ubudala. Akekho nomklami oyedwa owayenesandla kulokhu, namuhla okwandisa kuphela ukukhanga kwayo, ngoba kusobala ngokushesha ukuthi sibhekene nezikhulumi ezivela kwenye inkathi.

Kwakunjani ngeminyaka yawo-80s

I-genesis ye-LS5/9s yasekuqaleni i-prosaic, futhi izimo okwakudingeka bahlangabezane nazo zazisezingeni elifanele. Esikhathini esedlule, i-BBC ibisebenzisa kakhulu ama-LS3/5s amancane, amandla awo okucupha nokuqothuka ayelinganiselwe kakhulu, noma ama-LS5/8s, anikeza umkhawulokudonsa obanzi, ikakhulukazi ebangeni le-low-frequency, amandla aphezulu nokusebenza kahle, kodwa futhi izilinganiso ezinkulu kakhulu - enekhabhinethi engaphezu kwamalitha ayi-100 edingekayo ku-midwoofer engu-30 cm. Namuhla akekho olokotha ukudizayina uhlelo olunezinhlangothi ezimbili ukuze lusetshenziswe estudiyo, kungasaphathwa ukuthi lusetshenziswe ekhaya, olune-30cm mid-woofer...

Ngakho-ke kwakudingeka i-monitor ephakathi nendawo - encane kakhulu kune-LS5 / 8, kodwa hhayi njengesinyonga ebangeni le-bass njenge-LS3 / 5. Imakwe nje ngokuthi LS5/9. Amamonitha amasha kwakudingeka abonakale ngokulingana okuhle kwethoni (ngenani elincishisiwe ebangeni eliphansi kuye ngosayizi), umfutho womsindo omkhulu ofanele usayizi wegumbi, kanye nokuzalana okuhle kwe-stereo.

I-LS5/9 bekufanele izwakale ifana ne-LS5/8, abaklami abebengacabangi ukuthi ayinakwenzeka naphezu koshintsho olukhulu kangaka kubukhulu be-midwoofer. Ukusethwa kwe-crossover kungase kubonakale kuwukhiye (nakuba kwezinye izici eziqondisayo, i-crossover inosizo oluncane), i-tweeter efanayo nayo iyasetshenziswa lapha - idome elikhulu, elingu-34mm, elivela ekunikezelweni okujwayelekile kwenkampani yaseFrance i-Audax.

Umlando we-midwoofer uthakazelisa kakhulu. Ukusesha okuthile okungcono kune-cellulose evame ukusetshenziswa kwaqala kusenesikhathi. Impumelelo yokuqala kwakuyimpahla ye-Bextrene eyakhiwe yi-KEF futhi yasetshenziswa kuma-midwoofers angu-12 cm (uhlobo lwe-B110B), isibonelo kumamonitha e-LS3/5. Kodwa-ke, i-backstring (uhlobo lwe-polystyrene) yayiyinto engenamsebenzi.

Ukumbozwa kwezandla kwakudingeka ukuze kuzuzwe izakhiwo ezifiselekayo, okwenza kube nzima ukugcina ukuphindaphinda, futhi ngokugqoka, i-membrane yaba (kakhulu) isindayo, eyanciphisa ukusebenza kahle. Ngama-70s, i-Bextrene yathathelwa indawo yi-polypropylene - ngokulahlekelwa okukhulu, okungasadingi ukucubungula okwengeziwe.

Kuyaphawuleka ukuthi ngaleso sikhathi i-polypropylene yayifana nesimanje futhi kwakudingeka isuse ngokuhlelekile i-cellulose "ephelelwe yisikhathi".

Gxumela isikhashana manje

Namuhla, i-polypropylene isasetshenziswa, kodwa izinkampani ezimbalwa ezinethemba elikhulu ngayo. Kunalokho, ulwelwesi lwe-cellulose luyathuthukiswa futhi kwakhiwa izingxube ezintsha ngokuphelele, izinhlanganisela namasemishi. Inkampani eyenza lezi zipikha zoqobo ezimaphakathi kudala yafa futhi ayinayo imishini "yakudala". Izinsalela zemibhalo kanye namakhophi amadala aphumelele izivivinyo. Inkampani yaseBrithani iVolt iqale ukwakha kabusha, noma kunalokho yakha isipikha esiseduze kakhulu nesokuqala.

Ama-hulls abhekene kakhulu nama-exotics ahlula i-LS5/9. Ubuciko babo bunuka njengegundane futhi bulula, kodwa uma ubhekisisa imininingwane, kuvela ukuthi kumnandi futhi kuyabiza.

I-woofer ifakwe ngemuva, eyayivamile emashumini ambalwa eminyaka edlule futhi manje isishiywe ngokuphelele. Lesi sixazululo sine-drawback ye-acoustic - unqenqema olucijile lwakhiwa phambi kwe-diaphragm, nakuba kufakwe umthunzi kancane ngokumiswa okuphezulu, okuvela kuwo amagagasi, ephula izici zokucubungula (ezifana nemiphetho yezindonga eziseceleni eziphuma phambi iphaneli yangaphambili). Nokho, lesi sici asisibi kakhulu kangangokuba singadela ukuze siqedwe. isitayela sokuqala se-LS5/9… Inzuzo “enhle kakhulu” yedizayini yephaneli yangaphambili esusekayo kwakuwukufinyelela okulula kuzo zonke izingxenye zesistimu. Umzimba wenziwe nge-birch plywood.

Namuhla, amaphesenti angu-99 amakhabhinethi enziwe nge-MDF, esikhathini esidlule ayenziwe ikakhulukazi ku-chipboard. Eyokugcina ishibhile, futhi i-plywood ibiza kakhulu (uma siqhathanisa amabhodi obukhulu obuthile). Uma kukhulunywa ngokusebenza kwe-acoustic, iplywood cishe inabasekeli abaningi.

Kodwa-ke, ayikho yalezi zinto ezizuza inzuzo ecacile ngaphezu kwabanye, futhi hhayi kuphela intengo nezakhiwo ezizwakalayo ezibaluleke kakhulu, kodwa futhi nokulula kokucubungula - futhi lapha i-MDF iwina ngokucacile. I-Plywood ijwayele "ukucwecwa" emaphethelweni lapho isikwa.

Njengakwezinye izidakamizwa, i-plywood emodeli okuxoxwa ngayo ihlala incane kakhulu (9 mm), futhi umzimba awunakho ukuqinisa okujwayelekile (izinhlangothi, izigxobo eziphambanayo) - zonke izindonga (ngaphandle kwangaphambili) zimanziswe ngokucophelela ngamacansi angama-bituminous futhi "i-quilted." izingubo zokulala”. “egcwele ukotini. Ukuthepha ku-casing enjalo kwenza umsindo ohluke kakhulu kunokuthinta ibhokisi le-MDF; Ngakho-ke, icala, njenganoma yimuphi omunye, ngesikhathi sokusebenza lizokwethula umbala, okuyinto, noma kunjalo, izoba yisici esiningi.

Anginaso isiqiniseko sokuthi onjiniyela be-BBC babenomphumela othile yini engqondweni noma babesebenzisa indlela eyayitholakala futhi eyayidumile ngaleso sikhathi. Babengenakho ukukhetha okuningi. Kungaba "okungenamlando" ukuphetha ngokuthi i-plywood isetshenzisiwe, ngoba yayingcono kune-MDF, ngoba kwakungekho MDF emhlabeni ngaleso sikhathi ... Futhi ukuthi ngenxa ye-LS5 / 9 plywood izwakala ngendlela ehlukile kunokuba izozwakala ezindlini ze-MDF. - lokhu kuhluke ngokuphelele. Kungcono? Okubaluleke kakhulu ukuthi I-LS5/9 "entsha" izwakala njengeyokuqala. Kodwa lokhu kungaba inkinga...

Umsindo uhlukile - kodwa uyisibonelo?

"Ama-Reenactors" avela ku-Graham Audio enze konke ukubuyisela i-LS5 / 9 endala ekuphileni. Njengoba sesivele sisungule, i-tweeter iwuhlobo olufanayo nomkhiqizi njengangaphambili, kodwa ngizwile isifinyezo sokuthi iye yaba nezinguqulo ezithile eminyakeni edlule. Yiqiniso, i-mid-woofer, evela emikhiqizweni emisha yenkampani ye-Volt, yenza "isiphithiphithi" esikhulu kunazo zonke, esinezici ezihlukahlukene kangangokuthi idinga ukulungiswa kwe-crossover.

Futhi kusukela ngaleso sikhathi kuqhubeke, akusenakwenzeka ukusho ukuthi i-LS5 / 9 entsha izwakala njengeyasekuqaleni eminyakeni engamashumi amathathu edlule. Ikesi lifakwe ngemilayezo evela kubasebenzisi be-LS5/9 endala. Ngokuvamile babengenawo nhlobo umdlandla ngabo futhi babekhumbula lokho uma beqhathaniswa nabanye Abaqaphi beBBCfuthi ikakhulukazi i-LS3/5, i-mids ye-LS5/9 yayibuthakathaka, ngokusobala isusiwe. Lokhu bekuyinqaba, ikakhulukazi njengoba i-prototype egunyazwe yi-BBC yaze yabonisa (njengoba bekulindelekile) izici zokudlulisela.

Ku-inthanethi, ungathola ingxoxo ngalesi sihloko, futhi yayiholwa abantu bangaleso sikhathi abethula izinguqulo ezihlukahlukene zezenzakalo. Lokhu kufaka phakathi, ngokwesibonelo, ukucabanga ukuthi othile wenze iphutha esigabeni sokuqala sokusetshenziswa ekukhiqizeni, ngisho nalapho ebhala kabusha imibhalo, okungekho muntu owayilungisa kamuva ...

Ngakho-ke mhlawumbe manje kuphela i-LS5 / 9 edaliwe, okufanele ivele ekuqaleni? Phela, iGraham Audio kwadingeka ithole ilayisense kwa-BBC ukuze idayise umkhiqizo wayo ngaphansi kwenkomba ye-LS5/9. Ukwenza lokhu, bekudingeka ukuhambisa isampula yemodeli ehlangabezana nemibandela yasekuqaleni futhi ehambisana nemibhalo yokulinganisa ye-prototype (hhayi amasampuli okukhiqizwa kwakamuva). Ngakho-ke, ekugcineni, ukusebenza okuwumphumela yilokho okwakufunwa yi-Air Force eminyakeni engamashumi amathathu edlule, futhi akufani neze ne-LS5 / 9 eyakhiqizwa esikhathini esidlule.