Iziphumo zingamangalisa
Intambo zeSomlomo kunye neempembelelo zabo kwi-audio zingaba yinto enokubambisana kakhulu ephakanyiswayo kwingxoxo ngokuphindaphindiweyo. Xa ekhankanya iimvavanyo zeekhamera ze-cable kwi-Allan Devantier, umphathi we-acoustic yophando kwi-Harman International (abenzi be- Harman Kardon abafumanayo , i-JBL kunye ne- Infinity izikhulumi kunye nezinye izinto ezininzi zomsindo), singene kwingxoxo ejulile. Ngaba kunokwenzeka ukuba ubonise ukusuka kwimbono yobugcisa - ubuncinane kwiimeko ezibi kakhulu - iintambo zesithethi zingenza umehluko obonakalayo kwisandi sakho?
Olunye ulwazi lwangaphambili
Okokuqala, inkunkuma: asinalo uluvo olomeleleyo malunga nezixhobo zesithethi. Senze iimvavanyo eziyimfama (kwi- Home Theater magazine) apho abaphathi beeplani bahlakulela ukukhetha okufanayo kwiintambo ezithile kwabanye. Nangona kunjalo asinakuxhalabisa.
Abanye abantu banokuziva bexhalabile ngamacala omabini wesithethi ingxoxo. Kukho iimpapasho ezithintelayo ukuba iintambo zithethi azenzi nto. Kwaye ngapha nangapha, unokufumana ezinye iingcamango ezihlaziyiweyo zokuhlaziya izandi, ezicacileyo, ezicacileyo kunye neengcamango zentlukwano "yesandi" seentambo zesithethi. Kubonakala kuninzi ukuba amabini omabini avikela izikhundla ezigxininwe kunokuba athathe inzame ethembekileyo yokufuna inyaniso.
Ngaphandle kokuba uzibuza, yile nto esiyisebenzisayo ngabanye: izixhobo ezithile zesithethi ezenziwe yiCanare, enye i-wall-gauge-gauge eyi-14, izixhobo ezine zokuqhuba izinto ezide, kunye nezinye ezimbalwa zihleli zijikeleze.
Sifanele sidibanise ukuba kwiminyaka engaphezu kwe-20 yesibhengezo sokuphonononga, kunye nokuvavanya izithethi ezivela ngaphantsi kwe-US $ 50 ukuya ngaphezulu kweedola ezingama-20,000 ngamabini, sasiye senza ukuba omnye umvelisi akhathazeke malunga neentambo ezazisetyenziswa.
Uvavanyo lukaAllan
Yintoni eyayifumana uMdlali onomdla xa sithe saqalisa ukuthetha ngendlela isithethi isithethi sinokuthi, utshintshe ukuphendula ngesantya ngesithethi.
Yonke isithethi isisetyenzi sombane-intlangano yokuxhatshazwa, ukuxhobisa amandla kunye nokukhupha (inethemba elinye) ukuhambisa umgangatho ophezulu ophezulu. Ukuba ungeze ukunganyangeki , amandla , okanye ukuguqula, utshintshe ixabiso lemifanekiso kwaye, ngoko ke, isandi sesithethi.
Isithethi esiqhelekileyo i-cable ayikho amandla okanye inzuzo ebalulekileyo. Kodwa ukuchasana kuyahluka ngokukodwa, ngokukodwa ngeentambo ezincinci. Ngenxa yokuba zonke ezinye izinto zilingana; ukuthoba umnxeba, ukuxhathisa okukhulu.
UDevantier waqhubeka nencoko ngokukhankanya uphando oluvela ku-Floyd Toole noSean Olive, oogxa baseHarman, ababesebenza ngexesha leCanada yoPhando lweSizwe likaKhanada:
"Ngo-1986 u-Floyd Toole no-Sean Olive baphicilela uphando malunga nokuvakala kweemvumelwano. Bafumanisa ukuba abaphulaphuli bavaleleke kakhulu kwii-low-Q [high-bandwidth]. Ukusukela ekubeni i-loudspeaker impedance ihluke ngokuphindaphindiweyo, ukuxhaswa kwe-DC kwintambo kubaluleke kakhulu. Ireyati elandelayo ibonisa ubude obude obuvumelekileyo bentambo ukuqinisekisa ukuba ukuhluka kweempendulo eziphezulu kubangelwa ukuxhathisa i-cable kugcinwe ngaphantsi kwe-0.3 dB. 4 ohms kunye nempembelelo yesistim esiphezulu sama-oh ohms kunye nokuba ukuchasana kwekhayibhile yinto kuphela; ayibandakanyi ukukhupha kunye nekhono, oko kungenza izinto zingabonakali kangangoko. "
"Kufuneka kucace kule tafile ukuba phantsi kweemeko ezithile ikhebula kunye ne-loudspeaker ziyakwazi ukusebenzisana ukuze kubangelwe i-resonance ezwakalayo."
ukulinganisa ikhebula (AWG) | ukumelana no-ohms / unyawo (bobabini abaqhubi) | ubude be-0.3 dB (iinyawo) |
|---|---|---|
| 12 | 0.0032 | 47.23 |
| 14 | 0.0051 | 29.70 |
| 16 | 0.0080 | 18.68 |
| 18 | 0.0128 | 11.75 |
| 20 | 0.0203 | 7.39 |
| 22 | 0.0323 | 4.65 |
| 24 | 0.0513 | 2.92 |
Imilinganiselo yeBrent
"Uyazi, unokulinganisa oku," u-Allan uthe, ekhomba ngomnwe ngendlela ebonisa umyalelo ngaphezu kwesiphakamiso.
Senze imilinganiselo yokuphendula ngokuphindaphindiweyo kwisithethi ukususela ngo-1997, kodwa siye sahlala sisetyenzisile esihle, esikhulu, isithethi isithethi idibane ukuxhuma isithethi phantsi kovavanyo kwi-amp - into engayi kuchaphazela ukuchaneka kokulinganisa.
Kuthekani kuthi xa sitshintshile i-crummy, i-cable encane encinci yesithethi? Ngaba ulwahlulo lunokulinganiswa? Kwaye ngaba ngaba luhlobo oluthile oluya kuvezwa?
Ukufumanisa, silinganise impendulo yempendulo ye-Revel F208 isithethi se-tower ngokusebenzisa i-analyzer ye-Clio 10 FW yomsindo ngeentambo ezahlukeneyo ezi-20:
- I-cable ye-Linn ye-gauge eyi-12 esisetyenzisiweyo kwisilinganisi sesithethi kwiminyaka emihlanu edluleyo okanye kunjalo
- ikhefu elingu-12 elisezantsi le-Monoprice
- ikhefu engamaxabiso angama-24 e-RCA
Ukunciphisa ingxolo yendalo, imilinganiselo yenziwa ngaphakathi. Ayikho imakrofoni okanye isithethi okanye nayiphi na into egumbini. Sasisebenzisa ikhefu elide elide lomlilo ukuze ikhompyutha kunye nabo bonke abantu bangaphumeli kwigumbi ngokupheleleyo. Siphindaphinda kwakhona uvavanyo ngalunye ngamaxesha ambalwa ukuqinisekisa ukuba ingxolo yengingqi yayingeyona nto ichaphazelayo imilinganiselo. Kutheni u qaphela? Ngenxa yokuba sazi ukuba siya kulinganisa ukungafani okufihlakeleyo-ukuba kukho nayiphi na into enokulinganiswa kuzo zonke.
Emva koko sithatha impendulo ngekhebula leLinn kwaye sahlula ngempendulo yeMacoprice neRCA cables. Oku kubangele igrafu ebonisa ukungafani kwimpendulo yefrikansi ebangelwa nganye yocingo. Emva koko sasebenzisa i-octave 1/3-octave smoothing ukuze sincede siqinisekise ukuba akukho sandi esingqongileyo sothutho.
Kuvela ukuba uDevantier wayelungile - sinokulinganisa oku. Njengoko ungabona kwitshathi, iziphumo kunye neentambo ezi-12 zokulinganisa zahluke ngokuthe ngqo. Inguqu enkulu kunazo zonke yayinokuphucula ubuninzi +0.4 dB phakathi kwe-4.3 no-6.8 kHz.
Ngaba oku kuzwakalayo? Ingayiyo. Ngaba unomdla? Mhlawumbi akunjalo. Ukuyibeka ngembono, malunga neepesenti ezingama-20 ukuya kwe-30 zenguqu zivakala xa sivavanya isithethi kunye nangaphandle kwayo .
Kodwa ukutshintshela kwi-cable gauge-24 yaba nefuthe elikhulu. Okokuqala, kuncitshiswe kwinqanaba, kufuna i-normalizing ye-curve response response by enhancing it +2.04 dB ukuze idibaniswe nekhava ukusuka kwi-cable ye-Linn. Ukuchasana kwentambo ye-gauge engama-24 kwaye kwaba nemiphumo ecacileyo kwimpendulo yevama. Ngokomzekelo, unqumle isiseko phakathi kwama-50 no-230 i-Hz nge--1.5 dB kwi-95 Hz, u-midrange phakathi kwe-2.2 no-4.7 kHz ngokuphakama kwe--1.7 dB kwi-3.1 kHz, kunye nokunciphisa ukuhamba phakathi kwe-6 ne-20 kHz -1.4 dB kwi-13.3 kHz.
Ngaba oku kuzwakalayo? Ewe. Ngaba unomdla? Ewe. Ngaba ungathanda ukuba isandi sibe ngcono kunye nekhebula elikhuni okanye elinye lala manqatha? Asiyazi. Kungakhathaliseki ukuba, iziphakamiso zokuphucula i-stereo ezidlulileyo zokusebenzisa iicandelo ezili-12 okanye ezi-14 zokulinganisa zibukeka zilumkileyo.
Lo ngumzekelo ogqithiseleyo. Ngethuba kunokuba kubekho iincwadana ezimbalwa ezingapheliyo zithethi ezikhupha phezulu apho, phantse zonke iingcingo zesithethi ze-gauge ezili-14 okanye zineenkcaso ezincinci ukuba nayiphi na imiphumo engabonakaliyo yamanqaku kufuneka ibe ubuncinci (kwaye mhlawumbi inaudible). Kodwa kubalulekile ukuba uqaphele ukuba silinganise ukungalingani kokuphendula okuncinane nokuphindaphindiweyo, kunye neentambo ezimbini ezikufutshane nobukhulu kunye nesakhiwo. Kwakhona, phawula ukuba isithethi seRevel F208 sinemiphepheni ephakathi kwama-oh ohm (njengoko kulinganiswa). Ezi ziphumo ziza kubonakala ngokugqithisileyo ngesithethi se-4-ohm kwaye zingabonakali ngaphantsi kwezikhulumi ezi-8-ohm, ezona zizona zininzi ziqhelekileyo.
Ngoko ke isiphi isifundo sokususa kulo? Ngokukodwa, ungasebenzisi iicandelo ezincinci kunoma iyiphi inkqubo apho unenkathalo ngomgangatho ozwakalayo . Kwakhona, mhlawumbi musa ukukhawuleza ukugweba abo bathi bathetha ukungafani phakathi kwezixhobo zithethi. Ngokuqinisekileyo, abaninzi babo bacacisa le miphumo-kwaye iintengiso ezivela kwiinkampani zeekhampani eziphezulu zidla ngokugqithiseleyo ezi ziphumo. Kodwa izibalo kunye novavanyo olwenziwayo lubonisa ukuba abantu ngokwenene bavahluko phakathi kweentambo .