los ntawm Cov Ntawv Teev Npe Hauv Internet Archive
22 Cov Lus Qhia kom Ua Tau Lub Suab Zoo Dua nyob hauv Lub Suab Siab Suab Kawg - PART II
9. Grounding cov hlau rau cov hluav taws xob zoo li qub; tshwj xeeb tshaj yog nyob rau hauv huab cua ntub thiab nyob rau hauv tag nrho cov ntaub pua plag mloog ib puag ncig, static hluav taws xob ua ib qho teeb meem. Cov ntaub pua plag yog them nrog hluav taws xob zoo li qub uas tuaj yeem dhau los ntawm cov khoom siv hluav taws xob ntawm lub khib thiab / lossis ntawm tib neeg kov. Cov hluav taws xob zoo li qub ntawm cov ntaub pua plag yog qhov muaj zog heev uas thaum kuaj xyuas thaum sawv ntxov ua ntej ib tus neeg taug kev, tuaj yeem pom meej los ntawm cov cuab yeej yooj yim muag hauv Xov Tooj Cua Shack
Txhawm rau tshem tawm cov nyhuv, lub suab nrov sawv ntsug thiab cov khoom siv racks yuav tsum tau txuas nrog lub ntiaj teb los ntawm cov hlau nyias. Ntxiv mus, lub suab nrov cables thiab interconnects yuav tsum tau muab tshem tawm ntawm lub hauv pem teb vim cov nyhuv tib yam.
Cov txiaj ntsig dab tsi koj yuav xav tau los ntawm qhov tweak no yog kuv tsis paub yog vim li cas tab sis tsawg dua qhov muag plooj thiab ntau qhov dej ntws qis dua.
10. Lub suab nrov deb ntawm phab ntsa pem hauv ntej; Cov neeg tsim khoom nrov nrov feem ntau pom zoo kom deb ntawm tus neeg hais lus los ntawm phab ntsa pem hauv ntej (phab ntsa tom qab cov neeg hais lus). Feem ntau hais lus, tus neeg hais lus yuav tsum nyob deb li deb tau ntawm phab ntsa pem hauv ntej. (Sab phab ntsa ib yam nkaus) Yog tias lawv nyob ze rau ntawm phab ntsa, cov ntses bass thaj tsam sawv tsis muaj zog (piav qhia hauv kab lus tsib) thiab nruab nrab / treble band yuav raug compressed vim muaj zog bass ntau dhau.
Qee cov audiophiles pom qhov xav tau ntawm cov ntses bass thaj tsam los ntawm kev tso lawv los ze rau pem hauv ntej phab ntsa uas tsis yog. Ib yam yuav tsum tau xav tias qhov kev nce qib bass tsis yog vim lub suab qub tab sis nws yog qhov tshwm sim los ntawm cov lus teb hauv chav hu ua xim.
11. Nws pib qub / Transformer Passive Kab theem; Cov thev naus laus zis tshiab tsim nyob rau hauv kev lag luam hi-end ua rau pre-amplifiers questionable.
Ua ntej kawg, qhov laj thawj ntawm preamplifier tau teev nyob rau hauv plaub lub hauv paus;
a- Txhawm rau txuas ntau dua ib chav ua ke
b- Sau rau daim kab xev los ntawm qee qhov chaw
c- Tsawg ntim tso zis thiab inverted polarity teeb liab ntawm turntables (raws li tsuas yog qhov chaw tivthaiv)
d- Bass, treble hloov yuav tsum
Niaj hnub no, CD, SACD units tuaj yeem muab 5-8 Volts ntawm cov zis tawm uas muaj ntau tshaj li qhov txaus rau lub hwj chim amplifiers. Audiophiles tsis txaus siab rau kev hloov suab nrov tab sis tsom rau qhov yooj yim dua. Dedicated phono theem yog nyob rau hauv kev siv ntau, li no, feem ntau ntawm cov kev cai yuav siv tsis tau lawm.
Lub ntsiab thiab tib txoj haujlwm tseem ceeb ntawm lub tshuab hluav taws xob niaj hnub no yog kom txo qis qib, tsis nce qib !!
Tsuas yog sim xav txog lub teeb liab dawb huv los ntawm CD, lossis DAC los ntawm lub hwj chim amplifier, ces txiav qhov txuas no, ntxiv plaub plugs, plaub tus poj niam plugs, ib khub ntawm kev sib txuas, ntau cov resistors, capacitors, raj, transistors thiab tag nrho cov khoom hauv qhov txuas. Yuav ua li cas koj khaws lub teeb liab purity thiab koj yuav ua tau ib yam dab tsi zoo dua nws thawj!
Ib txoj kab active kab demolishes qhov nruab nrab thiab purity ntawm tus thawj suab. Qhov kev noj nyiaj txiag zoo li no yuav tsis tshwm sim nyob rau hauv feem ntau ntawm cov kev daws teeb meem qis lossis tsis pom zoo los ntawm qee tus neeg ntawm lub hom phiaj. Txhua theem kab ua haujlwm muaj nws tus kheej tonality thiab xim. Raws li qhov tseeb, audiophiles feem ntau siv kab theem los sib npaug lawv cov teeb meem tonality hauv cov tshuab. Piv txwv li, lub raj kab theem yog siv los ua kom lub suab ruaj khov hauv lub xeev lub hwj chim amplifier lossis treble nplua nuj kab theem yog siv los them nyiaj rau lub zog tsis zoo treble amplifier thiab vice versa. Yog hais tias qhov no yog cov ntaub ntawv nyob rau hauv ib tug system, tag nrho tej yam ntuj tso kab theem thiab tsis muaj xim yuav tsis raug saib los ntawm lub audiophile.
Ua raws li kuv, qhov kev txiav txim siab yuav tsum yog hloov lub zog amplifier kom pom lub suab xav tau es ua si nrog pre-amplifier. Hauv lwm lo lus, txhawm rau daws qhov teeb meem qub es sim ua kom npog qhov teeb meem.
Nws yog yuav luag nyob rau hauv kev pom zoo tias siv lub lauj kaub yooj yim heev ntxiv ntau neutrality thiab purity rau suab. Tab sis nyob rau hauv cov xwm txheej zoo li no, qee qhov teeb meem tshwm sim. Ib lub lauj kaub ntim uas yog ib lub potentiometer lossis ib lub tshuab hloov pauv ua haujlwm nrog cov thawj coj tsis kam. Txhua kauj ruam ntim ntxiv ntau txoj kev tiv thaiv rau lub teeb liab, yog li txo qhov ntim. Vim lub complexity ntawm lub suab paj nruag teeb liab (20 Hz-20 kHz), xws li ib tug resistive load yuav ua zoo li ib tug barrier rau txawv frequencies. Piv txwv li thaum tig mus rau qib ntim, lub treble yog qis dua thiab cov ntses bass thaj tsam yog condensed los yog thaum koj nce lub ntim, mids yog ntau dhau los yog vice versa. Tsis txhob hnov qab hais yog qhov tsis muaj dynamic ntau yam thiab. Ib theem kab tshem tawm cov teeb meem no.
Vim qhov tseeb no, ntim tswj pots lossis analogue ntim tswj CDs tsis tuaj yeem siv sawv ntsug ib leeg raws li kab theem.
Los ntawm cov thev naus laus zis tshiab, tshiab pib qub qub thiab transformer passive kab theem yog tsim los rau kev tswj ntim.
Cov chav nyob zoo li no tsis ua haujlwm nrog cov thawj coj tsis kam thiab tsis ntxiv kev tiv thaiv rau txoj kev teeb liab. Qhov tsuas yog tsis kam ntawm xws li amps yog kwv yees li 200 Ohms vim lub cable hauv windings.
Transformer passive kab theem muaj ob lub transformers, ib qho rau sab laug channel, thiab ib qho rau sab xis. Lawv muaj ib tug thawj winding thiab ntau (12-24 kauj ruam) ntawm theem nrab windings. Lawv lub hauv paus tseem ceeb yog nyiam lub ntim los ntawm kev hloov cov volts, es ntxiv qhov tsis kam. Raws li kuv paub, tsuas muaj peb tus neeg tsim khoom ntawm cov kab no. Kuv siv ob ntawm lawv. Ob leeg tau muab cov suab zoo tib yam zoo tib yam, nyob ntsiag to thiab tsis muaj suab nrov.
Kuv hloov kho Antique Sound Lab kuv tus kheej uas yog cov khoom lag luam zoo heev thiab pheej yig heev, (tsis txhob kwv yees nws tus nqi) tab sis Audio Consulting's Silver Rock ua los ntawm cov nyiaj ntshiab yog lwm yam.
Nws yuav tsum tau hais tias xws li ib tug passive kab theem tsis tuaj yeem haum rau txhua qhov system. Nyob rau hauv tas li ntawd, input impedance ntawm lub hwj chim amp yuav tsum tau tsav ncaj qha los ntawm cov zis theem ntawm DAC los yog CD player. Input impedance ntawm lub hwj chim amp yuav tsum tsawg li tsawg tau. Txoj hauv kev zoo tshaj plaws los kawm cov ntaub ntawv no yog sau cov txiaj ntsig impedance rau tus tsim khoom thiab thov kev pab ua ntej kev yuav khoom.
12. Zoo Tubes (NOS Tubes); puas yog nws xav kom them 100? rau thiab lub raj qub thaum lub tshiab nqi 10? Kuv ntseeg tias yog. Lub raj zoo tuaj yeem hloov cov yam ntxwv ntawm lub raj hluav taws xob zoo li yog tias koj hloov tag nrho chav tsev. Nos tubes tsis yooj yim nrhiav, kim heev tab sis tsim nyog siv. Tshwj xeeb tshaj yog lub siab zaus hiss yog qis heev nrog Nos hlab.
13. Yooj yim heev polarity nrhiav txoj kev; Feem ntau hais lus, European (German) tus qauv AC plugs tsis muaj lub teeb liab taw qhia. Teb Chaws Asmeskas, UK, Swiss AC plugs muaj ib txoj hauv kev txuas mus rau AC, yog li + thiab - theem ua tsis tau. Yog li ntawd, nws tsis yog ib qho yooj yim kom paub qhov tseeb polarity.
Cov khoom siv hluav taws xob tuaj yeem ua haujlwm tau zoo txawm tias qhov polarity. Peb lub TV, tub yees, qhov muag teev, computers txhua yam. Vim li cas AC polarity tseem ceeb heev hauv Hi-Fi !
Cov hluav taws xob tuaj txog ntawm (+) dhau ntawm hluav taws xob hluav taws xob thiab tawm ntawm (-) Feem ntau cov hluav taws xob tam sim no tuaj txog hauv cov khoom siv hluav taws xob ua ntej, tom qab ntawd txo mus rau qhov xav tau ntawm cov hluav taws xob hluav taws xob. Nyob rau hauv cov ntaub ntawv no, mains yog cia li lim los ntawm lub hwj chim mov seem. Lub transformer ntawm lub hwj huam mov seem coj zoo li kev rho tawm transformer, input thiab output tam sim no yog lub cev sib cais. Yog tias qhov polarity tsis raug, lub mains yuav tuaj txog rau qhov system ncaj qha los ntawm lub qhov rooj tom qab thiab yuav nqa tag nrho cov pa phem xws li RFI / EMI mus rau hauv chav tsev. Vim qhov tseeb, nws yog ib qho tseem ceeb kom paub qhov tseeb polarity.
Feem ntau ntawm cov hluav taws xob 'polarity zoo ib yam. Yog hais tias chav tsev muaj detachable fais fab qaum thiab IEC hom input, txoj cai qhov yuav tsum yog lub (+) mains thaum koj saib lub plug pem hauv ntej lub ntsej muag (raws li pom hauv qab no)
Lwm txoj hauv kev yooj yim yog txhawm rau txheeb xyuas cov fuses. Yog tias chav tsev tau nruab nrog lub fuse tiv thaiv sab nrauv, tso lub fuse thiab xyuas nws los ntawm lub ntsuas hluav taws xob thaum lub tsev txuas nrog lub hauv paus. Nws yuav tsum yog (+) teeb liab. Yog tias tsis yog, thim rov qab AC ntsaws ntawm phab ntsa
14. Mloog Qib Qib; Nws yog qhov tseeb tsis muaj leej twg ua lag luam los qhia rau koj tias qhov kev mloog zoo li cas yog qhov teeb tsa. Qee cov audiophiles nyiam mloog tsawg heev, qee qhov tig rau lub ntim kom txog thaum lub qhov rais tawg.
Yog tias qhov tshwm sim tau ua tiav qhov ambiance ntawm qhov chaw kaw, qhov ntim yuav tsum tau hloov kho raws li tab sis tsis ntau lossis tsis tsawg. Cov ntaub ntawv no siv tau rau cov twj paj nruag nkaus xwb tab sis tsis yog rau cov suab paj nruag hluav taws xob, jazz lossis disco thiab lwm yam.
Dab tsi puas tau mloog cov ntaub ntawv yog, qhov ntim qhov tseeb yuav tsum yog qhov uas tsis loj lossis txo qhov ntsuas qhov qub. Cov ntim siab dua yuav Piv txwv li ib lub guitar yuav tsum tau ua si nrog lub ntim qub ntawm lub guitar los ntawm qhov chaw ntim kom raug. Yog tias qib ntim tau nce, lub cev ntawm lub guitar yuav loj dua nyob rau hauv cov lus uas tsis siv lawm, ntawm qhov tod tes, tag nrho lub cev ntawm Mormon chorus yuav tsis muaj tseeb ntawm qhov ntim tsawg.
15. Ua kom sov cov neeg hais lus thiab cov kab hluav taws xob ua ntej mloog qhov tseem ceeb; Sib nrug los ntawm txoj kev xav tias "Cov khoom siv hluav taws xob hauv lub xeev muab lawv lub suab zoo tshaj plaws rau ob peb feeb kom txog thaum cov transistors tau sov." txhua yam khoom siv suab xav tau lub sijhawm sov so. Lub sijhawm no tsawg kawg yog 1/2 teev lossis 1 teev txawm tias cov neeg tsim khoom pom zoo tsawg dua. Raws li kuv paub, vim li cas tom qab qhov no yog qhov tshwj xeeb ntawm cov resistors, capacitors, raj thiab lwm yam khoom sib txawv yog tias lawv txias lossis sov. Cov neeg tsim khoom tsim cov chaw zaum kawg thaum cov chav sov sov, txwv tsis pub lawv yuav ua si zoo meej rau thawj ib nrab teev thiab phem dua tom qab sov.
Tus thawj coj ntawd yog siv los ntawm txhua qhov audiophile rau cov khoom siv hluav taws xob tab sis tsis yog ib txwm rau cov neeg hais lus thiab cov cables.
Cov neeg hais lus tseem ceeb heev vim tias lawv cov khoom siv passive yuav tsum tau sov so xws li crossover resistors. Lawv lub suab coils yuav tsum tau sov so thiab. Cov kab hluav taws xob kuj tseem ceeb. Lub sij hawm sov so yuav tsis tsim nyog rau cov cables tab sis cov cables yuav tsum tau khiav rau qee lub sij hawm kom txog thaum lawv cov dielectrics raug them.
Yog li ntawd, lub sijhawm sov so yuav tsum ua kom tiav los ntawm kev ua si (tej zaum yuav tsis mloog) tag nrho cov kab ke.
16. Kev xaiv lub suab nrov zoo rau chav mloog; Loudspeaker yuav tsum tau xaiv ua ke nrog rau chav mloog qhov ntev. Hmoov tsis zoo qhov kev nyiam dav dav hauv audiophiles tshwj xeeb hauv Asmeskas yog "qhov loj dua yog qhov zoo dua"
Nws zoo li qee tus neeg pib caij ski tshiab uas xaiv cov khoom siv caij ski zoo tshaj plaws ua ntej kev kawm thiab ntsib nrog ntau yam teeb meem tom qab.
Lub suab nrov loj yog qhov nyuaj rau txoj haujlwm, tsis yooj yim rau kev tsav tsheb, cuam tshuam ntau dua los ntawm chav ciam teb. Yog hais tias tus hais lus loj dua rau chav tsev, lub zog bass ntau dhau yuav txo qis cov suab nrov. Tus hais lus loj dua txhais tau tias muaj teeb meem loj dua. Tsav cov neeg hais lus loj yuav tsum muaj kev sib tw, kev paub, cov peev txheej, sijhawm thiab nyiaj txiag.