Ukukhipha inani elifanele lamandla wesistimu yakho
Enye yezihloko ezididayo kakhulu ezilalelwayo zikhomba ukuthi yisiphi isayizi amplifier izikhulumi zakho ezidinga. Ngokuvamile, abantu benza isinqumo esinjalo ngokusekelwe kwisitatimende esilula nesinye isikhathi esingenasici kanye nezichasiselo zokukhishwa kwe-amplifier . Abaningi bavame ukulandela imicabango engafanele mayelana nokuthi ama-amps nezikhulumi zisebenzisa kanjani. Sichitha iminyaka yokuhlola nokulinganisa izikhulumi - kanye nokuthola ulwazi ngemuva kokukhuluma ngezinkulungwane zezinjini nezindlela zokuthengisa emabhizinisini alalelwayo - ngakho-ke yilokho okufanele ukwazi ngempela!
Iqiniso NgeSikhulumi Amandla Ukusingatha Ama-Specs
Okokuqala, kubalulekile ukuqonda ukuthi ukuchazwa kwamandla okukhulumisana kwamandla ngokuvamile akusho lutho. Ngokuvamile, ubona nje "isilinganiso esiphezulu samandla" esingenasichazwa ngokuthi i-spec isithathwe kanjani. Ingabe yizinga eliphezulu eliqhubekayo? Izinga eliphakathi? Izinga lezinga eliphakeme? Futhi lihlala isikhathi eside kangakanani, futhi yiluphi uhlobo lwezinto? Le mibandela nayo ibalulekile.
Ngeshwa, kube khona izindinganiso eziningi nokuphikisanayo zokulinganisa ukuphathwa kwamandla esikhulumi, eshicilelwe yi-Audio Engineering Society (AES), i-Electronics Industries Association (EIA) kanye ne-International Electrotechnical Commission (i-IEC). Kungakhathaliseki ukuthi kungani umuntu ovamile angaqeda ukudideka okuncane.
Ngaphezulu kwalokhu, iningi labakhiqizi esiye bakhuluma nabo empeleni alandela lezi zindinganiso; bamane benze ukuqagela okufundiwe. Ngokuvamile, lesi sinqumo sisekelwe ekusebenzeni kwamandla we-subwoofer. ( Ukusetshenziswa kwamandla okusebenzisa amandla kubashayeli besikhulumi abakhulu, njengama- woofers kanye nama-tweeters, kukhona okulinganiselwe futhi okunenjongo kunezingcaphuno zezikhulumi eziphelele.) Ngezinye izikhathi isikhangiso sokuphatha amandla esikhulumi sisekelwe ekukhangiseni. Ungase ubone ngisho nomkhiqizi anikeze isikhulumi esithe xaxa amandla okuphatha amandla aphezulu ngokubhekene nesipikha esincane esithengiwe, nakuba bobabili basebenzisa i-woofer efanayo.
Izilungiselelo Zomqulu vs. Amplifier Amandla
Kubalulekile ukuqonda ukuthi ezimweni eziningi, i-200-watt amp ibeka amandla afanayo njengama-10-watt amp. Lokhu kungenxa yokuthi ukulalela okuningi kwenzeka emazingeni ajwayelekile, lapho okungaphansi kwamathani angu-1 kunamandla okwanele wezikhulumi . Esikhulwini esinikeziwe esilungiselelwe ngesimo esinikeziwe sevolumu, bonke abakhulisi bahambisa inani elilinganayo lamandla - uma nje bekwazi ukuletha amandla amaningi kangaka.
Ngakho-ke ngempela ukulungiswa kwevolumu okubalulekile, hhayi amandla we-amplifier. Uma ungalokothi uqhube isistimu yakho ezingeni lapho ivolumu engakhululekile khona, i-amp yakho ingase ingakhulumi ngaphezu kwezingu-10 noma ama-watts angu-20. Ngakho-ke, ungaxhuma ngokuphepha i-amplifier engu-1,000-watt kwisitatimende esincane se-2-intshi. Vele ungaphenduli ivolumu ngaphezu kwalokho isikhulumi esingasingatha.
Okungafanele ukwenze ukufaka isikhala esincane esinikezwa amandla - tshela, imodeli ye-10- noma engu-20-watt - ibe yisikhulumi esivamile bese uvula ivolumu phezulu. Am amp amp-powered amp can clip (ukuphazamiseka), futhi ukuchofoza amplifier yiyona imbangela evamile yokuhluleka kwesipikha. Uma isikhulumi sakho sichofoza, siphumelela ngempela ukuphakama kwezinga eliphakeme le-DC ngqo esikhulwini. Lokhu kungashisa izwi labashayeli bezwi lesikhulumi ngokuchofoza ngokushesha!
Indlela Yokubala Yisiphi Usayizi Amp Owudinga
Ukudideka njengoba konke lokhu kungase kubonakale, kulula ukubala ukuthi usayizi amakhi owudinga. Futhi ingxenye engcono kakhulu ukuthi ungakwenza lokhu ekhanda lakho. Ngeke uphelele, ngoba uzobe uthembela ekuchazeni okuvela kusikhulumi nakakhulu, okuvame ukungaqondakali futhi ngezinye izikhathi kugxiliwe. Kodwa kuzokuvala ngokulingene. Nansi indlela yokwenza ngayo:
- Thatha isilinganiso sokuzwela sesikhulumi , esichazwe kuma-decibel (dB) ku-1 watt / 1 imitha. Uma kubhalwe njenge-in-room noma isigamu-space spec, sebenzisa leyo nombolo. Uma ngabe i-anechoic spec (njengaleyo etholakala kwezinye izilinganiso zesikhulumi sangempela) engeza +3 dB. Inombolo onayo manje izokutshela ukuthi isikhulumi sakho sizokulalela kangakanani isikhulumi sakho sokulalelwayo ngesignali yomsindo we-1-watt.
- Lokho esikufunayo ukufika kungumthamo wamandla adingekayo ukushaya okungenani u-102 dB, okusho ngokuzwakalayo njengoba abantu abaningi abafuna ukukujabulela. Kakhulu kangakanani lokho? Ngabe usuhlala enkundleni enkulu yemidlalo yamahhala? Ithiyetha elilinganisiwe kahle eliqhutshwa ezingeni lesithenjwa lizokunikeza cishe u-105 dB ngesiteshi ngasinye. Kuzwakala kakhulu - kakhulu kunokuba abantu abaningi bafuna ukulalela - yingakho amathiyetha ajwayelekile ukudlala ama-movie ngamanani amaningi aphezulu. Ngakho-ke 102 dB yenza isikhangiso esihle.
- Nakhu okubalulekile okudingeka ukwazi; ukuze uthole lokho okungaphezulu +3 dB wevolumu, udinga ukuphinda kabili amandla amp amp. Ngakho-ke uma unesikhulumi esinokuzwela ngaphakathi kwekamelo lika-88 dB ku-1 watt, khona-ke ama-watts angu-2 azokuthola 91 dB, ama-watts angu-4 azokuthola 94 dB, njalonjalo. Mane nje ubale kusuka lapho: ama-watts angu-8 athola u-97 dB, ama-watts angu-16 athola u-100 dB, futhi ama-watts angu-32 akuthola u-103 dB.
Ngakho lokho okuzodinga i-amplifier ekwazi ukuletha ama-Watts angu-32. Yiqiniso, akekho owenza i-32-watt amp, kepha umamukeli we- 40 noma 50-watt noma umkhuliseli kufanele enze kahle. Uma ngabe ukufunwa kwamam ampresi noma owamukelayo kuphuma, uthi, ama-watts angu-100, ungakhathazeki ngakho. Khumbula, kumazinga wokulalela okujwayelekile anezikhulumi ezijwayelekile, noma yikuphi ukuphakamisa kukhishwa kuphela ngo-1 watt, noma kunjalo.