01 ngo 04
I-woofer engu-24 intshi + 1,800 watts = ???
Njengoko ndandingamangalisi enye ye-Pro Audio Technology ye-18-intshi subwoofers ngexesha lokutyelela kwenkampani malunga nonyaka odlulileyo, umsunguli weenkampani uPaul Hales wamangalisa xa wandixelela umzekelo endibujongayo wawungeyona eyona nkampani enkulu yenzayo. "Kwakhona sinomqhubi we-intshi ezingama-24, ukwenzela ukuba zifake izixhobo ezinkulu," watsho. Ukulinganisa kungenokuba yi-subwoofer enamandla kunayo yonke endiyifumana nayo, ngoko nangoko ndacela uHales ukuba ndibuyele ekuqhubeni i-CEA-2010 imilinganiselo engaphezulu yendlela yokuvelisa enye ye-24-intshi ye-model model ye-LFC-24SM, isisindo esingaphezu kwama-pounds angama-300 , ixabiso elimalunga ne-$ 10,000 - ngelixesha elizayo wayenalo elinye.
Ekugqibeleni ndafumana ithuba lam namhlanje. Ndacinga ukuba kuya kuba lula ukuba ndiqhube i-drive ukusuka kwikhaya langasenyakatho eLos Angeles ukuya kwi-HQ ye-Pro Audio Technology kwi-Lake Forest, Calif., Kunokugqithisa i-subwoofer. Ngoko ndiyifake yonke imilinganiselo yam yokulinganisa, kubandakanywa ne-subwoofer yam yesilinganiselo esenziwe ngamandla e-15 intshi, kwaye ihlelwa phantsi kwi-Orange County.
02 we 04
Ipro Audio Audio LFC-24SM: I-Backstory
Ngethuba ndandimisela ukulinganisa, ndacela uHales ukuba kutheni inkampani yakhe yenza i-subwoofer enkulu, kwaye yintoni abayenzayo ngayo.
Uthi ukulungiselela ukufakela kwendawo yasesekhaya, kunye nabantu abafuna ukucoceka kakhulu, izandi, "waphendula. "Okwangoku sibeka ezimbini kwiindawo zokuzonwabisa zasekhaya ezithande kakhulu njenge-cinema encinci yezorhwebo, kunye neendawo zokuhlala ezibalelwa kuma-80 abantu. Ngokufanelekileyo ubeka ezi zimbini phambili kunye neqela elincinci elincinci kumqolo ukuze uphendule i-bass impendulo kwigumbi. "
I-LFC-24SM isebenzisa umqhubi omnye wama-24-intshi kwikhabhinethi enekota. I-Hales yenzelwe ukuba isebenze kunye ne-amplifiers yenkampani, ene-digital processing signal (DSP) eyakhelwe kuyo ukuphendula impendulo. "Lowo esisisebenzisayo namhlanje unomtsha, umboniso obeka ama-watts angama-6,000 kwi-oh ohm," watsho. "Umqhubi kule nkqutyana ngu-8 ohms, ngoko sifumana ama-1,800 watts ngaphandle kwe-amp."
Abathandekayo be-Subwoofer bayamangaliswa xa befunda ukuba naphezu kobukhulu bayo, i-LFC-24SM ineempendulo ezingaphantsi kwe-20 Hz. Kutheni ungasebenzisi umqhubi omkhulu ukuze aphendule? Injongo yethu yoyilo yayikuzalisa i- LFE [i-low-frequency effects] band njengoko kungenakwenzeka, "kuchaza uHales. "Sinesihlunu esikwi-high-pass subsonic esilumkisa isalathisi esingaphantsi kwebhokisi yokukhangela ibhokisi, malunga ne-22 Hz. Oku kunciphisa ukuphazamiseka nokukhusela umqhubi.
"Ingxenye yesizathu sokuba le nxalenye inemveliso ephezulu kukuba ukuqonda ukuqhuba umqhubi ku-99 dB kwi-1 watt / 1 imitha. Awukwazi ukwenza umqhubi oya kwi-8 Hz kwaye unobungqina obufanelekileyo nokuthembeka. "
03 we 04
Ipro Audio Audio LFC-24SM: Isandi
Enyanisweni, ndandimangaliswe njengoko ndigijimise imilinganiselo ukuze ndibone ukuba ukusuka kwindawo yam ekhuselekileyo malunga neenyawo ezingama-20, umqhubi we-LFC-24SM wabonakala ehamba phambili de ndifike kwi-20 Hz, i-frequency yezinga eliphantsi. Ngeyona mininzi ye-subs me Ilinganiso, ndiyakwazi ukubona umqhubi uhamba ukusuka kwiiyure ezingama-20.
Yintoni eyandimangalisa ngayo ukuba i-LFC-24SM icocekile ngelixa ndenza imilinganiselo. Uninzi lwe-subwoofers endiyifumeneyo isandi ngathi ifuna ukuziqhawula ngokukhawuleza ngexesha lifikelela kwindawo ephezulu ngokwaneleyo yokushaya enye yee-thresholds. I-LFC-24SM ibonakale ngokucacileyo, echazwe kakuhle kwaye engaphilikiyo malunga nayo yonke yeseshoni yesilinganiselo, kuphela ukuqala ukulila i-tad ifuthe xa ndihla kufika kwi-20 Hz. Ngokuqhelekileyo, i-harmonic ephazamisayo yodwa eyaqhekeza umda we-CEA-2010 ukuphazamiseka kwaba yi-harmonic yesithathu; kukho ithuba elihle lokuba yi-amp amp, hhayi umqhubi, ufikelela kwimida yawo.
(Ngaba ndifumana ubuchwephesha kakhulu ngale nto? Funda i-primer ye-CEA-2010 ukuze ufunde kabanzi malunga nale ndlela yokuthakazelisa neyimfuneko.)
Ngoko ngaphandle kokuqhubeka kwe-ado, nantsi imilinganiselo ...
04 we 04
Ipro Audio Audio LFC-24SM: Imilinganiselo
I-CEA-2010A yeNdabuko
(1M iphakamileyo) (2M RMS)
40-63 Hz avg 135.5 dB 126.5 dB
63 Hz 135.2 dB 126.2 dB
50 Hz 136.0 dB 127.0 dB
40 Hz 135.4 dB 126.4 dB
20-31.5 Hz avg 130.5 dB 121.5 dB
31.5 Hz 133.6 dB 124.6 dB
25 Hz 131.4 dB 122.4 dB
20 Hz 123.7 dB 114.7 dB
Ndenze imilinganiselo ye-CEA-2010 usebenzisa i-microworks M30 yokulinganisa imakrofoni, i-M-Audio Mobile Pre Pre-USB kunye ne-freeware software ye-CEA-2010 eyenziwe nguDon Keele, oyinto eqhelekileyo ehamba kwi-software ye-Wavemetrics Igor Pro yesayensi yolwazi. Ndiyilinganisa amanyathelo am ukuba ndiphendule ukugcinwa kweprojekthi ye-Pro Audio Technology ngokuqala ukulinganisa i-sub-inch yesithenjwa esingu-15 intshi endaweni, ngokuthelekisa loo mlinganiselo kumlinganiselo endiwathatha epakini ngamanqina angama-50 + ekuvunyeleni kuzo zonke iinkalo, ngoko ke ndisusa umlinganiselo ukusuka kumlinganiselo wepaki ukudala i-curve correction.
Ezi milinganiselo zithathwe kwi-3 m meter output output, kwaye zilinganiselwa kwi-1-mitha elinganayo kwiimfuno ze-CEA-2010A zokubika. Iimodeli ezimbini zokulinganisa ezinikezelweyo - i-CEA-2010A kunye nemveli yendabuko - iyafana, kodwa umlinganiselo wendabuko (apho ezininzi iiwebhusayithi ezilalelwayo kunye nabakhiqizi abaninzi zisebenzisa) iziphumo ezilinganayo kwi-RM-2-meter elinganayo, eyi -9 dB ngaphantsi I-CEA-2010A ingxelo. Umyinge ubalwa kuma-pascals.
Ukubeka ukusebenza kwe-LFC-24SM ngendlela ebonakalayo, incinci enamandla kakhulu endinokuyikhumbula ngokukhawuleza ukuya kumhla yi-SVS PC13-Ultra. Ngomgangatho we-CEA-2010A wokunika ingxelo, i-PC13-Ultra ye-125.8 dB ukusuka kwi-40 ukuya kuma-63 i-Hz kunye no-116.9 dB ukusuka kwi-20 ukuya ku-31.5 iHz, kwaye ihambisa i-114.6 dB kwi-20 Hz. Ngaloo ndlela, inzuzo ye-LFC-24SM i-+9.7 dB ukusuka kwi-40 ukuya kuma-63 Hz, +13.6 dB ukusuka kwi-20 ukuya ku-31.5 iHz kunye ne -9.1 dB kwi-20 Hz. Kakade, i-PC13-Ultra ixabisa i-$ 1,699 kwaye iyincinci yobukhulu be-LFC-24SM.
I-Hales nayo yenza isheke ngokukhawuleza ngemitha yayo ye-SPL (eboniswe ngentla). Wandibuza ukuba ndiqhube i-wave hs 60 ye-sz, ke ndenza umlinganiselo kwi-1 mitha kwizinto azijonga njengona nqanaba eliphezulu likhuselekileyo. Ungabona umphumo ongentla. Oku kukho ithoni eqhubekayo; I-CEA-2010 inika amaninzi aphezulu kuba isebenzisa amathoni e-6.5-cycle breaks afutshane nomxholo we-bass umxholo womculo wangempela kunye nama-movie.
Ndiyicinga ukuba kukho i-subwoofers enamandla ngaphezu koko - ndibone umfanekiso womsindo ophilileyo uBol Heil ngasemva kwe-36 intshi enye yecandelo, kwaye ndake ndakhubeka kwisigxina kwi-Vancouver, BC yokulungisa isithethi esithethi , njengoko ndikhumbule, i-JBL ye-18-intshi ye-pro-woofers iqhube i-radiator phambi kwe-radiator phambi kwe-isobarik enclosure. Kodwa ngandlela-thile, ndicinga ukuba akunakwenzeka ukuba ndiza kufaka amanqaku e-CEA-2010 ngokuphakamileyo njengoko ndifumene kwi-LFC-24SM. Ngoku ndifuna nje ukuba ndiyifake njani le nto kwindawo yokuphulaphula kwam. Mhlawumbi ukuba ndiyichitha isitya esiqhekezayo ....