Cov txheej txheem:

Tsim Plaub-Channel SSM2019 Phantom Powered Mic Preamp: 9 Cov Kauj Ruam (nrog Duab)
Tsim Plaub-Channel SSM2019 Phantom Powered Mic Preamp: 9 Cov Kauj Ruam (nrog Duab)

Video: Tsim Plaub-Channel SSM2019 Phantom Powered Mic Preamp: 9 Cov Kauj Ruam (nrog Duab)

Video: Tsim Plaub-Channel SSM2019 Phantom Powered Mic Preamp: 9 Cov Kauj Ruam (nrog Duab)
Video: Dab neeg Niam tais vam ntau 26/5/2017 2024, Hlis ntuj nqeg
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Tsim Plaub-Channel SSM2019 Phantom Powered Mic Preamp
Tsim Plaub-Channel SSM2019 Phantom Powered Mic Preamp
Tsim Plaub-Channel SSM2019 Phantom Powered Mic Preamp
Tsim Plaub-Channel SSM2019 Phantom Powered Mic Preamp
Tsim Plaub-Channel SSM2019 Phantom Powered Mic Preamp
Tsim Plaub-Channel SSM2019 Phantom Powered Mic Preamp

Raws li koj yuav tau pom los ntawm qee qhov ntawm kuv lwm Cov Ntawv Qhia, Kuv muaj lub siab nyiam rau suab. Kuv tseem yog tus txiv neej DIY rov qab mus. Thaum kuv xav tau plaub txoj hauv kev ntxiv ntawm lub microphone preamplifiers los nthuav kuv USB audio interface, Kuv paub nws yog DIY project.

Ob peb xyoos dhau los, Kuv yuav Focusrite USB audio interface. Nws muaj plaub lub preamps mic thiab plaub kab kab nkag mus nrog rau qee qhov kev siv digital. Nws yog ib qho khoom siv kho vajtse zoo thiab ua tau raws li kuv xav tau. Qhov ntawd yog kom txog thaum kuv tau tsim ib pawg ntawm microphones. Yog li, kuv tau teeb tsa los daws qhov tsis sib xws no. Yog li, SSM2019 Plaub Channel Mic Preamp tau yug los!

Kuv muaj ob peb lub hom phiaj tsim rau txoj haujlwm no.

Nws yuav yooj yim li sai tau thiab siv yam tsawg kawg ntawm cov khoom siv

Nws yuav muaj lub zog phantom tso cai rau kuv siv txhua lub Pimped Alice microphones uas kuv tau ua

Nws yuav muaj qhov cuam tshuam siab (Hi-Z) cov tswv yim ntawm txhua cov channel rau piezo transducers, txoj haujlwm yav tom ntej ntawm kuv. Qhov no yuav yog qhov yooj yim ntxiv yog tias rooj plaub thiab cov khoom siv hluav taws xob twb yog ib feem ntawm txoj haujlwm tseem ceeb

Nws yuav muaj cov lus qhia tshwj xeeb: huv, tsis muaj qhov cuam tshuam thiab tsis muaj suab nrov. Raws li zoo lossis zoo dua li cov lus hais ua ntej hauv kuv li Focusrite interface

Kauj Ruam 1: Tus Tsim

Tsim
Tsim
Tsim
Tsim
Tsim
Tsim

Kuv pib kawm dab tsi twb twb muaj lawm. Kuv paub zoo nrog kev tsim qauv sib piv thiab tau pom kuv qhov SSM2019, yav tas los tau siv nws tus npawg laus, tam sim no SSM2017 tsis siv lawm. SSM2019 muaj nyob hauv pob 8 tus pin DIP, uas txhais tau tias nws tuaj yeem yooj yim ua mov ci. Kuv tuaj hla qee cov ntaub ntawv zoo heev ntawm lub tshuab ua suab paj nruag tsim los ntawm That Corp. (Saib ntu siv) Hmoov tsis zoo, txhua qhov ntawm lawv tshwj xeeb preamplifier nti yog pob me me ntim pob. Thiab, cov lus qhia tshwj xeeb tsuas yog qhov zoo dua li SSM2019. Kuv qhuas lawv rau lawv cov kev paub sib qhia thiab tsim cov ntaub ntawv. Cov yam ntxwv tshwj xeeb ntawm SSM2019 yog qhov zoo heev thiab zoo li feem ntau cov suab ua haujlwm ua haujlwm niaj hnub no, yuav tshaj qhov seem ntawm cov teeb liab txuas rau kev ua tau zoo. Kuv siv ob theem kev nce qib nrog lub hwj chim tso cai hloov kho lub teeb liab ntawm lawv. Qhov no ua kom cov qauv tsim tau yooj yim thiab tshem tawm qhov xav tau nyuaj rau nrhiav qhov chaw; xws li antilog potentiometers thiab ntau qhov sib tiv tauj nrog qhov tshwj xeeb resistor qhov tseem ceeb. Nws kuj tseem khaws THD + suab nrov zoo hauv qab no.01%

Thaum lub sijhawm kuv tsim cov txheej txheem, Kuv muaj qhov xav tau ntawm lub zog phantom. Cov neeg feem coob xav txog 48 Volts yog "tus qauv". Qhov no mus rov qab thiab yog qhov tseem ceeb thaum phantom lub zog hluav taws xob tau siv rau kev ntxeev lub tsiav tshuaj rau lub condenser microphones. Tam sim no, feem ntau cov condenser microphones siv phantom zog los ua kom ruaj khov qis dua qhov hluav taws xob. Lawv siv Zener sab hauv los tsim 6-12VDC. Qhov hluav taws xob ntawd tau siv los khiav cov khoom siv hluav taws xob sab hauv thiab tsim kom muaj hluav taws xob ntau dua los ua kom cov tshuaj ntsiav sib txawv. Qhov no yog txoj hauv kev zoo tshaj los ua qhov no. Koj tau txais lub tswb tshee zoo uas tuaj yeem siab dua 48V yog xav tau. Phantom lub zog tshwj xeeb rau microphones hu tawm 48V, 24V thiab 12V. Txhua tus siv cov txiaj ntsig sib txawv ntawm cov khoom sib txuas. 48V siv 6.81K, 24V nrog 1.2K thiab 12V siv 680 Ohm. Hauv qhov tseem ceeb, xav tau lub zog phantom kom tau txais qee lub zog ntawm lub microphone. Kuv tus epiphany yog qhov no: Qhov xav tau hluav taws xob yuav tsum siab txaus rau sab hauv 12V Zener kom ua haujlwm. Yog tias kuv siv +15V muaj nyob hauv kuv qhov project thiab qhov tsim nyog sib txuas tus nqi tiv thaiv, nws yuav tsum ua haujlwm zoo xwb. Qhov no yeej daws tau ob yam teeb meem ntxiv. Thawj zaug tsis tas yuav tsum muaj lub zog sib cais tsuas yog rau lub zog phantom. Qhov thib ob, thiab tseem ceeb dua rau kuv qhov kev tsim yog qhov yooj yim. Los ntawm kev ua kom phantom lub zog hluav taws xob tsawg lossis tsawg dua qhov muab hluav taws xob rau SSM2019, peb tshem tawm ntau qhov txuas ntxiv uas xav tau rau kev tiv thaiv. Cov txiv neej ntawm That Corp nthuav tawm ob daim ntawv ntawm AES muaj cai "Phantom Menace" thiab "48V Phantom Menace Rov Los". Cov no tshwj xeeb cuam tshuam nrog cov teeb meem ntawm kev muaj 47-100uF capacitor them rau 48V hauv Circuit Court. Kev luv luv uas tawm yam tsis xwm yeem tuaj yeem ua rau muaj teeb meem ntau. Lub zog khaws cia hauv lub tshuab hluav taws xob yog ua haujlwm ntawm cov hluav taws xob sib npaug yog li tsuas yog los ntawm 48V txog 15V peb txo qis lub zog khaws cia los ntawm qhov tseem ceeb ntawm 10. Peb kuj tiv thaiv qhov hluav taws xob siab dua qhov muab hluav taws xob ntawm ib qho ntawm cov teeb liab nkag ntawm SSM2019. Nyeem Qhov Corps tsim phau ntawv qhia rau piv txwv ntawm yam uas xav tau los ua ntawv pov thawj preamp.

Tsuas yog kom muaj pob tshab, Kuv pib txoj haujlwm no xav tias kuv yuav siv 24VDC phantom zog thiab tom qab ntawd nyob rau hauv cov txheej txheem ntawm kev daws teeb meem lub hwj chim, los nrog lub tswv yim ntawm kev siv +15 twb muaj lawm. Thaum xub thawj kuv tso lub hwj chim rau hauv rooj plaub preamp. Qhov no ua rau muaj teeb meem ntau hum thiab nrov nrov. Kuv tau xaus nrog qhov feem ntau ntawm cov khoom siv hluav taws xob hauv cov ntaub ntawv sab nraud nrog tsuas yog tus tswj hwm qhov hluav taws xob hauv rooj plaub. Qhov kawg tshwm sim yog preamp nyob ntsiag to heev uas yog ntawm par yog tias tsis zoo dua li cov sab hauv hauv kuv li Focusrite interface. Tsim lub hom phiaj #4 ua tiav!

Cia saib lub Circuit Court thiab pom dab tsi tshwm sim. SSM2019 thaiv hauv lub duab plaub xiav yog lub ntsiab lus tseem ceeb. Ob tus 820 Ohm resistors ob peb nyob rau hauv phantom zog los ntawm thaj chaw ntsuab uas qhov hloov pauv hloov siv +15 rau 47uF capacitor ntawm 47 Ohm resistor. Ob qho 820 Ohm resistors nyob ntawm "+" sab ntawm 47uF kev sib txuas ua ke uas nqa lub suab microphone. Ntawm lwm sab ntawm lub tshuab txuas hluav taws xob yog ob 2.2K resistors uas khi lwm sab ntawm lub capacitors rau hauv av thiab khaws cov tswv yim rau SSM2019 ntawm DC qhov peev xwm hauv av. Cov ntaub ntawv qhia pom 10K tab sis hais txog lawv yuav tsum qis li sai tau kom txo qis suab nrov. Kuv tau xaiv 2.2K kom qis dua tab sis tsis cuam tshuam loj heev rau qhov cuam tshuam cuam tshuam ntawm tag nrho cov Circuit Court. 330 Ohm resistor teeb tsa qhov nce ntawm SSM2019 txog +30db. Kuv khaws tus nqi no raws li nws muab qhov tsawg kawg nkaus nce uas kuv xav tau. Nrog qhov tau txais no thiab +/- 15V cov khoom muab ntsia clipping yuav tsum tsis yog qhov teeb meem. 200pf Capacitor hla cov pins nkag yog rau EMI/RF tiv thaiv rau SSM2019. Qhov no yog txoj cai tawm ntawm cov ntaub ntawv rau kev tiv thaiv RF. Kuj tseem muaj ob 470pf capacitors ntawm XLR jack rau RF tiv thaiv. Ntawm lub teeb liab nkag sab, peb muaj DPDT toggle hloov ua peb theem xaiv hloov. Kuv xav kom tuaj yeem siv lub piezo hu tuaj tos ntawm lub guitar (lossis lwm yam twj paj nruas suab) thaum ib txhij siv lub microphone. Qhov no tso cai rau theem rov qab ntawm lub microphone yog xav tau. Yog tias nws tsis yog rau qhov ntawd, Kuv yuav tau tshem nws vim tias feem ntau cov phiaj xwm kaw cia tso cai rau koj hloov pauv qib tom qab kaw suab. Cov txiaj ntsig ntawm SSM2019 mus rau 10K lub zog ntsuas rau ntsuas qib mus rau theem tom ntej.

Tam sim no mus rau sab siab impedance. Hauv lub duab plaub liab, peb muaj qhov qub tsis hloov pauv raws li ib ntu ntawm OPA2134 dual op amp. Nov yog qhov kuv nyiam op amp rau suab. Tsawg suab nrov thiab cuam tshuam. Zoo ib yam li SSM2019, nws yuav tsis yog qhov txuas qis tshaj plaws hauv cov teeb liab. Lub.01uF capacitor khub niam txiv lub teeb liab los ntawm ¼”lub tswv yim nkaus. 1M resistor tau muab cov lus siv hauv av. Qhov txaus siab, lub suab nrov ntawm 1M tus neeg tawm tsam tuaj yeem hnov los ntawm kev hloov qib ntawm Z siab nkag mus txhua txoj kev. Txawm li cas los xij, thaum Piezo tuaj tos tau txuas nrog, lub peev xwm ntawm piezo nqa tuaj yeem tsim cov lim RC nrog 1M resistor. Qhov ntawd ua rau lub suab nrov qis (thiab nws tsis zoo nyob hauv thawj qhov chaw.) Los ntawm qhov tso tawm ntawm op amp, peb mus rau 10K lub zog ntsuas rau qhov hloov kho qib kawg.

Ntu kawg ntawm lub Circuit Court yog qhov nce qib zaum kawg suav nrog lub tshuab ua haujlwm nyob ib ncig ntawm ntu thib ob ntawm OPA2134 op amp. Saib daim duab plaub ntsuab hauv cov duab. Qhov no yog theem hloov pauv nrog qhov tau nce los ntawm kev sib piv ntawm 22K resistor thiab 2.2K resistor (s) muab rau peb nce ntawm 10 lossis +20dB. 47pf capacitor hla 22K resistor yog rau kev ruaj ntseg thiab tiv thaiv RF. 10K potentiometers yog linear. Uas txhais tau hais tias thaum lub wiper txav mus hla qhov kev sib hloov, qhov tsis kam los ntawm qhov pib pib sib txawv linearly nrog kev hloov pauv. Hauv nruab nrab, koj tau txais 5K rau ob qho kawg. Txawm li cas los xij, peb hnov txawv. Peb hnov logarithmically. Uas yog vim li cas decibels (dB) tau siv los ntsuas qib suab. Los ntawm kev siv 10K linear potentiometer pub rau 2.2K tus tiv thaiv, peb ua tiav qib hloov pauv uas suab zoo ib yam. Op amp khaws cov lus tawm tswv yim ntawm qhov av virtual. Txog AC cov cim, 2.2K tus tiv thaiv raug khi rau hauv av virtual. Qhov ib nrab ntawm qhov kev sib hloov yog kwv yees li -12dB attenuation nrog zaum kawg ntawm kev sib hloov tsuas yog 1.2db ntawm qhov sib txawv. Qhov no zoo li du dua li ntau lwm yam preamplifiers qhov twg lub lauj kaub tau hloov pauv qhov nce ntawm preamp. Nws ua haujlwm zoo dua li pre-amps uas muaj qhov nce nce potentiometer. Feem ntau qhov nce me ntsis kawg ua rau muaj kev cuam tshuam nrawm hauv qhov kawg nce thiab me ntsis ntawm lub suab nrov pom. Focusrite teb li no. Kuv tsis. Lub teeb liab tau txuas ua ke los ntawm op amp ntawm 47 Ohm resistor. Qhov no tiv thaiv op amp thiab ua kom nws ruaj khov thaum tsav tsheb ntev cable yuav tsum yog koj yuav tsum ua li ntawd. Ib qho kawg rau ob daim IC. Cov no yog ob qho khoom siv bandwidth siab tau nce siab. Lawv yuav tsum muaj lub zog xa khoom zoo hla dhau.1uF cov khoom siv hluav taws xob tau teeb tsa ze rau ntawm cov khoom siv. Qhov no tiv thaiv tej yam txawv los ntawm qhov tshwm sim thiab ua rau lawv zoo thiab ruaj khov.

Txhawm rau suav nws tag nrho, muaj ob theem kev nce qib, 30dB thiab 20dB rau tag nrho nce ntawm 50dB. Kev hloov qib yog ua los ntawm kev sib txawv qib teeb liab ntawm ob qib nce. Kuj tseem muaj qhov siab tiv thaiv tawm tswv yim muaj nyob ntawm txhua cov channel uas zoo tshaj plaws rau piezo khaws thiab lwm yam twj paj nruas (guitar thiab bass) uas xav tau me ntsis ntawm kev hloov kho ua ntej yuav kaw. Txhua yam nrog qhov cuam tshuam tsawg heev thiab suab nrov. Phantom fais fab yog 15VDC uas yuav tsum ua haujlwm nrog cov khoom siv condenser niaj hnub no. Ib qhov tshwj xeeb tshwj xeeb yog Neumann U87 Ai. Lub microphone ntawd yog kuv qhov kev txaus siab thiab kev zoo siab. Sab hauv nws muaj 33V Zener rau lub zog nruab nrab muab khoom siv. Rau kuv uas tsis yog teeb meem li kuv Focusrite muaj 48V phantom zog. Tag nrho kuv cov haujlwm ua haujlwm tau zoo xwb.

Lub Hwj Huam:

Lub hwj chim yog lub tsev kawm qub qub tsim. Nws siv lub hauv paus tapped transformer, tus choj rectifier thiab ob lub lim dej loj loj. Lub tshuab hluav taws xob yog 24VAC qhov chaw kais. Lub ntsiab lus peb tuaj yeem tsoo lub hauv paus nruab nrab thiab tau txais 12VAC los ntawm txhua ceg. Tos- tsis yog peb siv +/- 15VDC? Qhov no ua haujlwm li cas? Muaj ob yam tshwm sim: Thawj 12VAC yog tus nqi RMS. Rau lub sine yoj, qhov hluav taws xob siab tshaj yog 1.4X siab dua (thev naus laus zis cov hauv paus plaub ntawm ob) yog li ntawd muab qhov siab tshaj ntawm 17volts. Qhov thib ob lub tshuab hloov pauv tau ntsuas los muab 12VAC ntawm kev thauj khoom tag nrho. Uas txhais tau tias ntawm lub teeb nraub qaum (thiab lub voj voog no tsis siv lub zog ntau) peb muaj qhov hluav taws xob ntau dua. Txhua qhov no ua rau kwv yees li 18VDC muaj rau cov ntsuas hluav taws xob. Peb siv 7815 thiab 7915 txoj kab hluav taws xob tso tawm qhov hluav taws xob thiab kuv tau xaiv los ntawm National Japan Radio uas yog yas yas. Qhov no txhais tau tias koj tsis xav tau lub rwb thaiv tsev ntawm tus tswj hwm thiab rooj plaub thaum teeb tsa lawv. Thaum xub thawj kuv tau tsim lub zog muab khoom sab hauv rau lub mic ua ntej amp rooj plaub. Qhov ntawd tsis ua haujlwm zoo ib yam li kuv muaj qee qhov suab nrov thiab nrov nrov, txhua yam cuam tshuam nrog ze li cas kuv lub tshuab hloov pauv mus rau sab hauv lub xov tooj hluav taws xob txuas. Kuv tau tso qhov hloov pauv, hloov kho, thiab lub taub lim loj hauv ib lub thawv cais. Kuv siv 4 lub davhlau ya nyob twg XLR txuas Kuv muaj hauv cov khoom hauv lub thawv kom coj DC tsis raug cai rau hauv rooj plaub tseem ceeb uas cov tswj hwm tau teeb tsa ze rau ntawm lub rooj tsav xwm tseem ceeb. Raws li tau hais ua ntej, thawj zaug kuv yuav siv 24VDC rau Phantom zog thiab xaus tsis ua qhov ntawd ua kom yooj yim dua kuv lub Circuit thiab tshem tawm 24V tus tswj hwm (thiab hloov pauv hluav taws xob ntau dua!)

Kauj Ruam 2: Kev Tsim Kho: Cov Ntaub Ntawv

Kev Tsim Kho: Cov Ntaub Ntawv
Kev Tsim Kho: Cov Ntaub Ntawv
Kev Tsim Kho: Cov Ntaub Ntawv
Kev Tsim Kho: Cov Ntaub Ntawv
Kev Tsim Kho: Cov Ntaub Ntawv
Kev Tsim Kho: Cov Ntaub Ntawv
Kev Tsim Kho: Cov Ntaub Ntawv
Kev Tsim Kho: Cov Ntaub Ntawv

Rooj plaub:

Yog tias koj tseem tsis tau pom dua, kuv cov xim tha xim thiab daim ntawv lo zoo nkauj heev. Kuv tus menyuam tau ua txoj haujlwm hauv tsev kawm ntawv thiab peb muaj peb xim ntawm cov xim tsuag muaj nyob rau ntawm qhov kuv tau siv tag nrho peb. Tom qab ntawd kuv tau txais lub tswv yim tsuas yog pleev xim rau daim ntawv lo nrog cov xim daj thiab txhuam me me. Zoo nkauj npaum li ib tus hauv ntiaj teb uas zoo li qhov no! Kuv tau txais kuv cov ntaub ntawv los ntawm Tanner Electronics hauv Dallas, lub khw muag khoom seem. Kuv pom nws ntawm kab ntawm Mouser thiab lwm qhov chaw. Nws yog Hammond P/N 1456PL3. Koj tuaj yeem xav sau nws thiab pleev xim nws txawv, uas yog ntawm koj!

Kauj Ruam 3: Kev Tsim Kho: Circuit Board

Kev Tsim Kho: Circuit Board
Kev Tsim Kho: Circuit Board
Kev Tsim Kho: Circuit Board
Kev Tsim Kho: Circuit Board

PC Board:

Kuv tau tsim lub voj voog ntawm daim ntawv qhia zaub mov. Thawj lub tsev tsim ib txoj hauv kev kom ntseeg tau tias kev tsim qauv ua haujlwm raws li xav tau. Tom qab ntawd tsim lwm peb txoj hauv kev. Saib daim duab 1 thiab 2 rau qhov teeb tsa. Kuv OPA2134's yog los ntawm Burr Brown, uas tau los ntawm TI hauv 2000. Kuv yuav 100 qhov no rov qab rau hauv ib hnub thiab tseem muaj ob peb. Daim ntawv ceeb toom.1uF hla hla lub kaus mom txhua qhov teeb tsa ntawm sab hauv qab ntawm pawg thawj coj saib. Cov no yog qhov tseem ceeb rau kev ruaj ntseg ntawm IC chips.

Kauj Ruam 4: Kev Tsim Kho: Pem Hauv Ntej Jacks thiab Kev Tswj:

Kev Tsim Kho: Pem Hauv Ntej Vaj Huam Sib Luag Jacks thiab Kev Tswj
Kev Tsim Kho: Pem Hauv Ntej Vaj Huam Sib Luag Jacks thiab Kev Tswj
Kev Tsim Kho: Pem Hauv Ntej Vaj Huam Sib Luag Jacks thiab Kev Tswj
Kev Tsim Kho: Pem Hauv Ntej Vaj Huam Sib Luag Jacks thiab Kev Tswj
Kev Tsim Kho: Pem Hauv Ntej Vaj Huam Sib Luag Jacks thiab Kev Tswj
Kev Tsim Kho: Pem Hauv Ntej Vaj Huam Sib Luag Jacks thiab Kev Tswj

Pem Hauv Ntej Vaj Huam Sib Luag Jacks thiab Kev Tswj:

Nyob ntawm koj qhov xwm txheej xaiv koj qhov teeb tsa yuav txawv. Kuv siv Switchcraft vaj huam sib luag mount ¼”jacks uas yuav txuas rau pem hauv ntej vaj huam sib luag rau hauv av. Txhawm rau txo qhov av hauv av, txuas hauv av ntawm XLR jack (Pin-1) nrog qhov ntev tshaj plaws uas ua tau rau lub vaj huam sib luag pem hauv ntej. Txog kuv qhov teeb tsa, kuv txuas lawv rau hauv av ntawm "Hi Z" cov tswv yim txuas. Kuv prewired cov theem hloov pauv hloov pauv los ntawm kev hla ob txoj kev sib txuas sab nraud ntawm Ob Chav Ncej Ob Leeg Pov (DPDT) hloov. Tom qab ntawd lub microphone tso tawm los ntawm XLR yuav mus rau qhov chaw nruab nrab thiab ib qho ntawm kev sib txuas sab nraud mus rau lub rooj tsav xwm hauv Circuit Court. Txoj kev no thaum txoj haujlwm hloov pauv, theem rov qab. Ua ntej yuav ntsaws rau XLR jacks, muab tshuaj txhuam ntawm ob 470pf capacitors rau RF/EMI tiv thaiv. Qhov no ua rau nws yooj yim dua tom qab! Rho cov potentiometers rau ntawm lub vaj huam sib luag pem hauv ntej. Kuv siv tus ntse me me lossis lwm tus cim rau sau cov khoom ntawm lub vaj huam sib luag sab hauv los pab txuas nrog tom qab. Thiab kom nco kuv qhov twg ntawm lub zog ntawm lub zog yuav tsum tau txuas nrog hauv av. Tom qab ntawd txuas txhua qhov kev sib txuas hauv av rau lub lauj kaub ua ke siv ib qho uas tsis muaj kev tiv thaiv xaim hlau. Tom qab ntawd qhov kev sib txuas yuav khiav mus rau qhov hauv paus ntsiab lus.

Kauj Ruam 5: Kev Tsim Kho: Sab Hauv Hluav Taws Xob

Kev Tsim Kho: Sab Hauv Hluav Taws Xob
Kev Tsim Kho: Sab Hauv Hluav Taws Xob
Kev Tsim Kho: Sab Hauv Hluav Taws Xob
Kev Tsim Kho: Sab Hauv Hluav Taws Xob
Kev Tsim Kho: Sab Hauv Hluav Taws Xob
Kev Tsim Kho: Sab Hauv Hluav Taws Xob
Kev Tsim Kho: Sab Hauv Hluav Taws Xob
Kev Tsim Kho: Sab Hauv Hluav Taws Xob

Kev Sib Txuas Sab Hauv:

Rau lub microphone teeb liab xov hlau, kuv sib tw 22gauge xov tooj ua ke thiab txuas nrog cov tswv yim XLR jacks rau theem xaiv toggle keyboards. Twisting lawv ua ke txo qis ib qho kev tsis nkag siab EMI thiab RF. Hauv txoj kev xav, sab hauv rau rooj plaub hlau peb yuav tsum tsis txhob muaj, vim txhua yam hauv txoj haujlwm no yog kev sib txuas zoo sib xws. Tsis txhob txhawj xeeb txog theem tshwj xeeb tseem. Ua kom zoo ib yam li txhua txoj hauv kev tau xaim. Peb yuav xam tawm hauv kev ntsuas seb txoj haujlwm ntawm qhov hloov pauv yuav "zoo li cas" thiab qhov twg yog qhov rov qab.

Rau qhov seem ntawm cov xov hlau kuv tau siv ib tus neeg xyuas pib tiv thaiv thiab txuas cov ntaub thaiv npog rau hauv av ntawm ib kawg nkaus xwb. Qhov no ua rau peb cov paib tiv thaiv thiab tiv thaiv av loops. Kuv muaj ib txoj hlua ntawm 26-gauge tiv thaiv Hom "E" xaim uas kuv tau txais los ntawm Skycraft hauv Orlando ntev dhau los. Muaj cov neeg muag khoom uas muag nws online lossis koj tuaj yeem siv qhov sib txawv ntawm tus neeg xyuas pib tiv thaiv. Rau txhua qhov kev sib txuas, Kuv tau npaj qhov ntev ntawm nws nrog cov ntaub thaiv npog nthuav tawm ntawm ib kawg thiab lwm qhov tsuas yog tus neeg xyuas pib hauv nruab nrab. Kuv muab qee qhov cua sov ntswj hla daim ntaub thaiv ntawm qhov tsis txuas nrog kawg kom tiv thaiv nws. Saib cov duab. Ua haujlwm zoo thiab txuas ib yam ntawm ib lub sijhawm. Tom qab ntawd kuv khi qhwv txhua pab pawg ntawm plaub lub xov hlau ua ke kom ua tau yam zoo raws li qhov ua tau.

Kauj Ruam 6: Kev Tsim Kho: Fais Fab Khoom

Kev Tsim Kho: Cov Khoom Siv Hluav Taws Xob
Kev Tsim Kho: Cov Khoom Siv Hluav Taws Xob
Kev Tsim Kho: Cov Khoom Siv Hluav Taws Xob
Kev Tsim Kho: Cov Khoom Siv Hluav Taws Xob
Kev Tsim Kho: Cov Khoom Siv Hluav Taws Xob
Kev Tsim Kho: Cov Khoom Siv Hluav Taws Xob

Hwj chim Mov:

Kuv tsim kuv cov khoom hauv lub thawv me me. Muaj ib yam uas koj yuav tsum tau ua kom muaj kev nyab xeeb thiab ua tau raws li txoj cai. Koj yuav tsum muaj lub fuse nyob rau thawj ntawm lub transformer. Kuv siv tus tuav fuse hauv kab nrog ¼ amp fuse. Qhov ntawd yuav tshuab yog tias tus hloov pauv rub ntau dua 25W, uas nws yuav tsum tsis txhob. Txhua yam no siv ntau tshaj 2W nrog plaub lub suab txuas.

Cov Hluav Taws Xob Hluav Taws Xob:

Npaj cov ntsuas hluav taws xob ua ntej teeb tsa rau lub vaj huam sib luag los ntawm kev siv lub tshuab lim ob lub lim dej, 10uF rau cov tswv yim thiab.1uF ntawm cov zis. Kuv kuj txuas cov xov hluav taws xob txuas rau lawv kom tiv thaiv tsis meej pem tom qab. Nco ntsoov: 7815 thiab 7915 muaj cov kab sib txawv. Saib cov ntawv txheeb xyuas tus lej tus lej thiab kev sib txuas. Tom qab txhua yam raug teeb tsa, nws yog lub sijhawm los ua txhua qhov kev sib txuas sab hauv.

Lub Hwj Chim thiab Kev Sib Txuas Hauv av:

Kuv siv cov xim xaim xaim txuas DC lub zog ua rau lub rooj tsav xwm hauv Circuit. Txhua qhov kev sib txuas hauv av khiav rov qab mus rau ib qho kev sib txuas hauv qhov haujlwm. Qhov no yog ib qho piv txwv "Star" kev ua haujlwm hauv av. Vim tias kuv twb tau tsim cov khoom siv hluav taws xob sab hauv. Kuv tseem muaj ob lub lim lim loj loj sab hauv rau rooj plaub. Kuv khaws cov no thiab siv lawv rau DC lub zog tuaj. Kuv twb tau hloov lub hwj chim hauv rooj plaub (DPDT) thiab kuv tau siv qhov ntawd los hloov lub +/- tsis muaj kev tswj hwm DC lub zog rau cov tswj hwm. Kuv txuas ncaj qha rau hauv av xaim.

Thaum txhua qhov kev sib txuas ua tiav, so so thiab rov qab los tom qab los tshuaj xyuas txhua yam! Qhov no yog cov kauj ruam tseem ceeb tshaj plaws.

Kuv pom zoo kom koj ntsuas lub zog siv hluav taws xob thiab xyuas kom meej tias qhov sib txawv yog qhov raug thiab koj muaj +15VDC thiab -15VDC los ntawm cov tswj hwm ua ntej txuas lawv mus rau lub rooj tsav xwm hauv Circuit Court. Kuv tau teeb tsa ob lub LEDs ntawm kuv lub vaj huam sib luag los qhia tias muaj hwj chim. Koj tsis tas yuav ua qhov no tab sis nws yog qhov zoo ntxiv. Koj yuav xav tau qhov kev txwv tam sim no hauv cov kab nrog txhua LED. 680 Ohm rau 1K yuav ua haujlwm zoo xwb.

Kauj Ruam 7: Kev Tsim Kho: Patch Cables

Kev Tsim Kho: Thaj Cables
Kev Tsim Kho: Thaj Cables
Kev Tsim Kho: Thaj Cables
Kev Tsim Kho: Thaj Cables
Kev Tsim Kho: Thaj Cables
Kev Tsim Kho: Thaj Cables
Kev Tsim Kho: Thaj Cables
Kev Tsim Kho: Thaj Cables

Thaj Cables:

Tshooj lus no tuaj yeem yog Cov Lus Qhia cais. Txhawm rau ua qhov no siv tau, koj yuav tsum txuas tag nrho plaub txoj hauv kev rau kab kev nkag ntawm Focusrite interface. Kuv npaj kom muaj lawv nyob ib sab ntawm ib leeg yog li kuv xav tau plaub daim kab xev luv. Kuv pom qee qhov zoo tib tus neeg xyuas pib cable uas ruaj khov thiab tsis kim ntawm Redco. Lawv kuj tseem muaj cov ntsaws zoo. Cov kab ntawv muaj cov tooj liab tiv thaiv sab nrauv thiab cov yas thaiv sab hauv. Qhov ntawd yuav tsum tau muab tshem tawm thaum ua cov thaj txuas. Saib cov kab ke yees duab rau kuv txoj kev sib dhos cable. Kuv nyiam nqa daim ntaub thaiv thiab qhwv nws ib ncig ntawm qhov txuas hauv av ntawm ¼ jack ces muab nws tso rau hauv. Qhov no ua rau lub cable ruaj khov heev. Txawm hais tias koj yuav tsum ib txwm ntsaws qhov txuas txuas los ntawm kev tuav lub txuas, kev raug xwm txheej tshwm sim qee zaum. Txoj kev no pab.

Kauj Ruam 8: Xeem thiab Siv

Kev Xeem thiab Siv
Kev Xeem thiab Siv
Kev Xeem thiab Siv
Kev Xeem thiab Siv
Kev Xeem thiab Siv
Kev Xeem thiab Siv
Kev Xeem thiab Siv
Kev Xeem thiab Siv

Xeem thiab siv:

Thawj qhov peb yuav tsum tau ua yog txiav txim siab qhov polarity ntawm theem hloov pauv. Txhawm rau ua qhov no koj yuav xav tau ob lub microphone zoo ib yam. Uas kuv xav tias koj muaj, lossis koj tsis xav tau plaub-channel pre-amp! Txuas ib qho rau Focusrite mic pre-amp cov tswv yim thiab lwm qhov rau channel ib ntawm plaub channel mic-pre. Yob ob qho rau nruab nrab. Tuav lub microphones ze rau ib leeg thiab tham nkauj lossis hais lus thaum txav koj lub qhov ncauj dhau los ntawm ob lub microphones. Lub mloog pob ntseg yeej pab nrog ntu no. Koj yuav tsum tsis txhob hnov qab tsis ua lossis poob rau hauv cov lus tso tawm yog tias mics nyob hauv ib theem. Hloov theem ntawm mic thiab rov ua dua. Yog tias lawv tsis dhau theem, koj yuav hnov qhov tsis muaj lossis poob hauv qib. Koj yuav tsum muaj peev xwm qhia sai sai uas txoj haujlwm yog nyob rau theem thiab tsis nyob theem.

Kuv pom nrog qib lauj kaub txog ib nrab txoj kev kuv tau txais txiaj ntsig zoo rau kuv lub suab thiab qhov sib xws ntxhib qhov twg kuv ib txwm teeb tsa Focusrite ua ntej-amp nce pob mus txog 1-2 teev. Qhov txaus siab qhov tshwj xeeb ntawm Focusrite nce txog 50dB ntawm qhov tau txais. Thaum kuv tau nws tig tag nrho txoj kev (tsis muaj mic txuas) Kuv tau hnov me ntsis. Nws tsuas yog me ntsis nrov dua li kuv SSM2019 raws li preamp. Kuv tsis muaj cov cuab yeej ntsuas ntsuas ntxiv. Txawm li cas los xij, Kuv muaj kev paub ntau yam hauv ob lub studio thiab suab nyob thiab qhov preamp no yog tus ua tau zoo tshaj plaws.

Txog rau Hi-Z cov tswv yim, Kuv tau siv Piezo Disc rau 1/4 nkaus thiab txheeb xyuas tias txhua yam ua haujlwm thiab tau txais ntau yam raug.

Kuv zoo siab txog qhov muaj yim txoj hauv kev ntawm cov tswv yim mic muaj rau kaw. Kuv muaj ob peb MS microphones thiab 8 ntawm kuv lub Pimped Alice microphones. Qhov no yuav cia kuv sim nrog kev tso mic sib txawv nyob rau tib lub sijhawm. Nws tseem qhib lub qhov rooj rau txoj haujlwm uas kuv xav sim ntev - lub Ambisonic microphone. Ib qho nrog plaub lub tsiav tshuaj sab hauv npaj los ntes lub suab ib puag ncig thiab ntau lub suab.

Nyob twj ywm rau ob peb lub microphone qhia ntxiv!

Kauj Ruam 9: Cov neeg ua tim khawv

Cov no yog cov ntaub ntawv muaj txiaj ntsig zoo rau lub suab sib xws, tsim lub mic ua ntej thiab tsim kom tsim nyog rau lub suab hluav taws xob.

Cov ntaub ntawv:

Cov Ntaub Ntawv SSM2019

Cov Ntaub Ntawv OPA2134

Phantom Power Wikipedia

Qhov Corp "Phantom Menace"

Qhov Corp Analog zais koj niam tsis tau qhia rau koj

Qhov Corp Ntau Qhov Zoo Tshaj Plaws Qhov Koj Niam Yeej Tsis Qhia Rau Koj

Tias Corp Tsim Tus Qauv Microphone Preamps

Whitlock Audio Grounding, Whitlock

Rane "ceeb toom 151": Kev Tiv Thaiv thiab Kev Tiv Thaiv

Pom zoo: