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Old 14-01-2008, 10:28 PM   #1
Edin
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Default Mo?e li phantom power spr?iti balanced XLR out?

Pozdrav svima!!!

Dugo sam čitao forum i na?ao dosta korisnih odgovora na neka svoja pitanja, ali imam jedno koje ne mogu razrije?iti.

O čemu se radi...
Neko je negdje na internetu pomenuo da je spalio line out na pojačalu tako ?to mu je tonac pustio "phantom power" kroz kabl.
Namjeravam nabaviti Line 6 LD bass pojačalo koje ima balanced XLR output i za koji proizvođač ka?e:

Quote:
XLR Direct Out - This gives the sound man a
simulation of a mic'd cabinet that is model specific.

This is your Direct Out for recording or sending your
sound to a house sound system when you?re playing
live. This output utilize Line 6?s exclusive A.I.R.
processing which has made Line 6 products like POD
the undisputed standard for recording direct. The level
of this output is set via Channel Volume and has a
ground lift switch to lift the ground if your direct out
is causing a buzz in the sound/recording system you are
connected to. A bit of advice, many pro sound engineers
here at Line 6 have made the direct out experience
from this amp a beautiful one. Many sound engineers
prefer to take a Pre Amplifier Direct Signal via a Direct
Box. This is the de facto technique for getting basic
bass tone in the house PA. When playing a gig in a
club, ask the sound guy to consider using your direct
out for amp and cabinet tone - they will not be
disappointed!
Moje pitanje je, da li je svaki balanced XLR direct out po defaltu imun na 48V fantom napon? Ili nije?

Da ne bih experimentisao, empirijskim metodama (probaj pa saznaj), kako bi se sve pona?alo kada bih izlaz iz pojačala povezao kratkim balanced-unbalanced XLR patchem na DI box (npr. Ultra DI100) i onda dalje bezbri?no prema mixu?


Hvala unaprijed!!!
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Old 14-01-2008, 10:40 PM   #2
zvincic
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Default Re: Mo?e li phantom power spr?iti balanced XLR out?

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Originally Posted by Edin View Post
Moje pitanje je, da li je svaki balanced XLR direct out po defaltu imun na 48V fantom napon? Ili nije?
iako je ta "imunost" potpuno trivijalna stvar...nazalost nije

edit: mislim, nije svaki....da ne dodje do zabune
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Old 14-01-2008, 10:50 PM   #3
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Default Re: Može li phantom power spržiti balanced XLR out?

U sustini, zavisi od slucaja do slucaja, tj. kako je dizajnom rijeseno, i postoji li zastita od fantoma. U tvom slucaju, mozes da koristis XLR out sa pojacala (napomeni covjeku za miksetom da ne pusti fantom na taj kanal) a mozes i da taj output spojis na DI(ako je behringer, bolje ga izbjegni).
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Old 14-01-2008, 10:53 PM   #4
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Default Re: Može li phantom power spržiti balanced XLR out?

Ako su izlaz na pojacalu napravili i predvideli ga, onda nema bojazni.
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Old 15-01-2008, 06:57 AM   #5
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Default Re: Mo?e li phantom power spr?iti balanced XLR out?

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Originally Posted by LACKY View Post
Ako su izlaz na pojacalu napravili i predvideli ga, onda nema bojazni.
Ma ne znam, poslao sam upit na "Line 6" sajt ali ne odgovaraju - mo?da ni oni ne znaju
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Old 15-01-2008, 07:00 AM   #6
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Default Re: Mo?e li phantom power spr?iti balanced XLR out?

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Originally Posted by dvuckovic View Post
... a mozes i da taj output spojis na DI(ako je behringer, bolje ga izbjegni).
Neka preporuka za DI box samo da nije extra-?ara po d?epu?
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Old 15-01-2008, 10:53 AM   #7
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Default Re: Mo?e li phantom power spr?iti balanced XLR out?

Pa stace ti di box, sprava ti vec ima balansirani rekord aut?
Di box ti treba ako ces line aut da preko njega ukljucis u mikrofonski.
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Old 15-01-2008, 11:50 AM   #8
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Default Re: Mo?e li phantom power spr?iti balanced XLR out?

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Originally Posted by LACKY View Post
Di box ti treba ako ces line aut da preko njega ukljucis u mikrofonski.
To otprilike i pitam - da poslu?i kao "phantom remover/eliminator/izolator", kako god.

Jo? nema odgovora iz "Line 6" da li je direct out na pojačalu "phantom friendly"
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Old 15-01-2008, 12:41 PM   #9
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Default Re: Mo?e li phantom power spr?iti balanced XLR out?

Ako si malo spretan sa lemilicom mozes rijesit problem. Tada bez straha i da tonac upali fantom nece nista naskodit preampu.
Prvo: odlemis izlaze (zice) sa balanced out (kenon) i to samo pin 3 (hot) i pin 2 (cold), te na njihove krajeve spajas po jedan elektrolitski kondenzator 100 mF/63 V tako da je plus pol (kondenzatora) prema unutra a minus lemis na pinove od kenona (pritom pazi da ne zamijenis pinove!) i ne bi trebalo bit problema jer kondenzator jednostavno ne propusta istosmjerni napon te stiti elektroniku prema uredjaju.
Drugo: ako je kenon direktno lemljen na tiskanu plocicu, e onda ces morat malo izgulit po milimetar bakrenog voda koji idu na pin 3 i pin 2 i premostiti ih sa elektrolitskim kondenzatorom koji je okrenut isto kao i u prvom primjeru!
Sad je samo do tebe koliko ti se da kopat po novoj spravi koja je mozda i pod garancijom. E jbga, ne mogu se trenutno nicega drugog sjetit!
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Old 15-01-2008, 08:15 PM   #10
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Default Re: Mo?e li phantom power spr?iti balanced XLR out?

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Originally Posted by FrankoPanko View Post
i to samo pin 3 (hot) i pin 2 (cold)
Zar nije obrnuto? ja nisam znao pa sam malo brljao po net-u a i Analog mi dao link pa cisto da proverim... http://www.mediacollege.com/audio/co...onnectors.html
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